EX-7.1 5 a2145876zex-7_1.htm EXHIBIT 7.1
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Exhibit 7.1

FORM F-9

PETRO-CANADA

and

PC FINANCIAL PARTNERSHIP

each as Issuer

and

THE BANK OF NEW YORK,

as Trustee

INDENTURE

Dated as of November • , 2004

Providing for the issue of
Debt Securities
in unlimited principal amount

PETRO-CANADA and PC FINANCIAL PARTNERSHIP

Reconciliation and tie between Trust Indenture Act
of 1939 and Indenture, dated as of November • , 2004

Trust Indenture Act Section		Indenture Section
§ 310(a)(1)		608
	(a)(2)	608
	(b)	609, 610
§ 312(c)		703
§ 314(a)		705
	(a)(4)	1004
	(c)(1)	102
	(c)(2)	102
	(e)	102
§ 315(b)		601
§ 316(a)(last Sentence)		101 ("Outstanding")
	(a)(1)(A)	502, 512
	(a)(1)(B)	513
	(b)	508
	(c)	104(e)
§ 317(a)(1)		503
	(a)(2)	504
	(b)	1003
§ 318(a)		111

Note: This reconciliation and tie shall not, for any purpose, be deemed to be a part of the Indenture.

TABLE OF CONTENTS

			Page
ARTICLE ONE DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION			1
	SECTION 101	Definitions	1
	SECTION 102	Compliance Certificates and Opinions	17
	SECTION 103	Form of Documents Delivered to Trustee	18
	SECTION 104	Acts of Holders	18
	SECTION 105	Notices, etc. to Trustee, the Partnership or Petro-Canada	20
	SECTION 106	Notice to Holders; Waiver	20
	SECTION 107	Effect of Headings and Table of Contents	21
	SECTION 108	Successors and Assigns	21
	SECTION 109	Separability Clause	22
	SECTION 110	Benefits of Indenture	22
	SECTION 111	Governing Law	22
	SECTION 112	Legal Holidays	22
	SECTION 113	Agent for Service; Submission to Jurisdiction; Waiver of Immunities	22
	SECTION 114	Conversion of Currency	23
	SECTION 115	Currency Equivalent	24
	SECTION 116	Incorporators, Shareholders, Officers and Directors of the Partnership and Petro-Canada Exempt from Individual Liability	25
	SECTION 117	Conflict with the Trust Indenture Act	25
	SECTION 118	WAIVER OF JURY TRIAL	25
ARTICLE TWO SECURITIES FORMS			25
	SECTION 201	Forms Generally	25
	SECTION 202	Form of Trustee's Certificate of Authentication	26
	SECTION 203	Securities Issuable in Global Form	26
	SECTION 204	Form of Guarantee	27
ARTICLE THREE THE SECURITIES			28
	SECTION 301	Amount Unlimited; Issuable in Series	28
	SECTION 302	Denominations	32
	SECTION 303	Execution, Authentication, Delivery and Dating	32
	SECTION 304	Temporary Securities	35
	SECTION 305	Registration, Registration of Transfer and Exchange	37
	SECTION 306	Mutilated, Destroyed, Lost and Stolen Securities	41
	SECTION 307	Payment of Principal and Interest; Interest Rights Preserved; Optional Interest Reset	42
	SECTION 308	Optional Extension of Stated Maturity	44
	SECTION 309	Persons Deemed Owners	45
	SECTION 310	Cancellation	46
	SECTION 311	Computation of Interest	46
	SECTION 312	Currency and Manner of Payments in Respect of Securities	47
	SECTION 313	Appointment and Resignation of Successor Exchange Rate Agent	49

ARTICLE FOUR SATISFACTION AND DISCHARGE			49
	SECTION 401	Satisfaction and Discharge of Indenture	49
	SECTION 402	Application of Trust Money	51
ARTICLE FIVE REMEDIES			51
	SECTION 501	Events of Default	51
	SECTION 502	Acceleration of Maturity; Rescission and Annulment	53
	SECTION 503	Collection of Debt and Suits for Enforcement by Trustee	54
	SECTION 504	Trustee May File Proofs of Claim	55
	SECTION 505	Trustee May Enforce Claims Without Possession of Securities	56
	SECTION 506	Application of Money Collected	56
	SECTION 507	Limitation on Suits	56
	SECTION 508	Unconditional Right of Holders to Receive Principal, Premium, if any, and Interest, if any	57
	SECTION 509	Restoration of Rights and Remedies	57
	SECTION 510	Rights and Remedies Cumulative	58
	SECTION 511	Delay or Omission Not Waiver	58
	SECTION 512	Control by Holders	58
	SECTION 513	Waiver of Past Defaults	58
	SECTION 514	Waiver of Stay or Extension Laws	59
	SECTION 515	Undertaking for Costs	59
ARTICLE SIX THE TRUSTEE			59
	SECTION 601	Notice of Defaults	59
	SECTION 602	Certain Duties and Responsibilities of Trustee	60
	SECTION 603	Certain Rights of Trustee	61
	SECTION 604	Trustee Not Responsible for Recitals or Issuance of Securities	62
	SECTION 605	May Hold Securities	63
	SECTION 606	Money Held in Trust	63
	SECTION 607	Compensation and Reimbursement	63
	SECTION 608	Corporate Trustee Required, Eligibility	64
	SECTION 609	Resignation and Removal; Appointment of Successor	64
	SECTION 610	Acceptance of Appointment by Successor	66
	SECTION 611	Merger, Conversion, Consolidation or Succession to Business	67
	SECTION 612	Authorization of Authenticating Agent	67
	SECTION 613	Appointment of Co-Trustee	69
	SECTION 614	Force Majeure	70
ARTICLE SEVEN HOLDERS' LISTS AND REPORTS BY TRUSTEE AND ISSUER			70
	SECTION 701	Issuer to Furnish Trustee Names and Addresses of Holders	70
	SECTION 702	Preservation of List of Names and Addresses of Holders	70
	SECTION 703	Disclosure of Names and Addresses of Holders	71
	SECTION 704	Reports by Trustee	71
	SECTION 705	Reports by Petro-Canada and the Partnership, if applicable	71

ARTICLE EIGHT CONSOLIDATION, AMALGAMATION, MERGER AND SALE OF ASSETS			72
	SECTION 801	Petro-Canada and the Partnership may Consolidate, etc. only on Certain Terms	72
	SECTION 802	Successor Person Substituted	73
	SECTION 803	Securities to Be Secured in Certain Events	74
ARTICLE NINE SUPPLEMENTAL INDENTURES			74
	SECTION 901	Supplemental Indentures Without Consent of Holders	74
	SECTION 902	Supplemental Indentures with Consent of Holders	76
	SECTION 903	Execution of Supplemental Indentures	77
	SECTION 904	Effect of Supplemental Indentures	77
	SECTION 905	Conformity with the Trust Indenture Act	77
	SECTION 906	Reference in Securities to Supplemental Indentures	77
	SECTION 907	Notice of Supplemental Indentures	77
ARTICLE TEN COVENANTS			78
	SECTION 1001	Payment of Principal, Premium, if any, and Interest	78
	SECTION 1002	Maintenance of Office or Agency	78
	SECTION 1003	Money for Securities Payments to Be Held in Trust	79
	SECTION 1004	Statement as to Compliance	81
	SECTION 1005	Additional Amounts	81
	SECTION 1006	Limitation on Security Interests	83
	SECTION 1007	Payment of Taxes	83
	SECTION 1008	Limitation on Sale and Leaseback Transactions	84
	SECTION 1009	Existence	84
	SECTION 1010	Waiver of Certain Covenants	84
	SECTION 1011	Calculation of Original Issue Discount	85
ARTICLE ELEVEN REDEMPTION OF SECURITIES			85
	SECTION 1101	Applicability of Article	85
	SECTION 1102	Election to Redeem; Notice to Trustee	85
	SECTION 1103	Selection by Trustee of Securities to Be Redeemed	85
	SECTION 1104	Notice of Redemption	86
	SECTION 1105	Deposit of Redemption Price	87
	SECTION 1106	Securities Payable on Redemption Date	87
	SECTION 1107	Securities Redeemed in Part	88
	SECTION 1108	Tax Redemption	88
ARTICLE TWELVE SINKING FUNDS			89
	SECTION 1201	Applicability of Article	89
	SECTION 1202	Satisfaction of Sinking Fund Payments with Securities	89
	SECTION 1203	Redemption of Securities for Sinking Fund	90
ARTICLE THIRTEEN REPAYMENT AT OPTION OF HOLDERS			91
	SECTION 1301	Applicability of Article	91
	SECTION 1302	Repayment of Securities	91
	SECTION 1303	Exercise of Option	91
	SECTION 1304	When Securities Presented for Repayment Become Due and Payable	92
	SECTION 1305	Securities Repaid in Part	93

iii

ARTICLE FOURTEEN DEFEASANCE AND COVENANT DEFEASANCE			93
	SECTION 1401	Issuer's Option to Effect Defeasance or Covenant Defeasance	93
	SECTION 1402	Defeasance and Discharge	93
	SECTION 1403	Covenant Defeasance	94
	SECTION 1404	Conditions to Defeasance or Covenant Defeasance	94
	SECTION 1405	Deposited Money and Government Obligations to Be Held in Trust; Other Miscellaneous Provisions	96
	SECTION 1406	Reinstatement	97
ARTICLE FIFTEEN MEETINGS OF HOLDERS OF SECURITIES			97
	SECTION 1501	Purposes for Which Meetings May Be Called	97
	SECTION 1502	Call, Notice and Place of Meetings	97
	SECTION 1503	Persons Entitled to Vote at Meetings	98
	SECTION 1504	Quorum; Action	98
	SECTION 1505	Determination of Voting Rights; Conduct and Adjournment of Meetings	99
	SECTION 1506	Counting Votes and Recording Action of Meetings	100
ARTICLE SIXTEEN GUARANTEE OF SECURITIES			101
	SECTION 1601	Guarantee of Securities	101
	SECTION 1602	Execution and Delivery of Guarantees	102
	SECTION 1603	Counterparts	102

EXHIBITS
	Exhibit A		FORMS OF CERTIFICATION
		Exhibit A-1-	FORM OF CERTIFICATE TO BE GIVEN BY PERSON ENTITLED TO RECEIVE BEARER SECURITY OR TO OBTAIN INTEREST PAYABLE PRIOR TO THE EXCHANGE DATE	A-1-1
		Exhibit A-2-	FORM OF CERTIFICATE TO BE GIVEN BY EUROCLEAR AND CLEARSTREAM IN CONNECTION WITH THE EXCHANGE OF A PORTION OF A TEMPORARY GLOBAL SECURITY OR TO OBTAIN INTEREST PAYABLE PRIOR TO THE EXCHANGE DATE	A-2-1

INDENTURE, dated as of November • , 2004 among PETRO-CANADA, a corporation duly organized and existing under the laws of Canada (herein called "Petro-Canada" or the "Guarantor"), having its principal office in Calgary, Alberta, Canada, PC FINANCIAL PARTNERSHIP, a general partnership duly formed and existing under the laws of Delaware (herein called the "Partnership"), having its principal office in Wilmington, Delaware (each of Petro-Canada and the Partnership being sometimes referred to as an "Issuer" herein), and THE BANK OF NEW YORK, a New York banking corporation, as trustee (herein called the "Trustee"), having its Corporate Trust Office in New York, New York.

RECITALS

Each Issuer may from time to time deem it necessary to issue its unsecured debentures, notes or other evidences of indebtedness (herein called the "Securities"), and has duly authorized the execution and delivery of this Indenture in one or more series as provided in this Indenture.

The Guarantor deems it necessary to guarantee any Securities issued by the Partnership (the "Guarantee") and has duly authorized the provision of such Guarantee pursuant to this Indenture.

This Indenture is subject to the provisions of the Trust Indenture Act of 1939, as amended, that are required to be part of this Indenture and shall, to the extent applicable, be governed by such provisions.

All things necessary to make this Indenture a valid agreement of each of the Partnership and Petro-Canada, in accordance with its terms, have been done.

NOW, THEREFORE, THIS INDENTURE WITNESSETH:

For and in consideration of the premises and the purchase of the Securities by the Holders (as defined below) thereof, it is mutually covenanted and agreed, for the equal and proportionate benefit of all Holders of the Securities or of any series thereof, as follows:

ARTICLE ONE
DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION

SECTION 101 Definitions.

For all purposes of this Indenture, except as otherwise expressly provided or unless the context otherwise requires:

(1) the terms defined in this Article have the meanings assigned to them in this Article and include the plural as well as the singular;

(2) all other terms used herein which are defined in the Trust Indenture Act, either directly or by reference therein, have the meanings assigned to them therein;

(3) all accounting terms not otherwise defined herein have the meanings assigned to them in accordance with GAAP;

(4) the words "herein", "hereof" and "hereunder" and other words of similar import refer to this Indenture as a whole and not to any particular Article, Section or other subdivision;

(5) words implying any gender shall include all genders; and

(6) the words Subsection, Section and Article refer to the Subsections, Sections and Articles, respectively, of this Indenture unless otherwise noted. Certain terms, used principally in Article Three, are defined in that Article.

"Act" when used with respect to any Holder, has the meaning specified in Section 104.

"Additional Amounts" has the meaning specified in Section 1005.

"Affiliate" of any specified Person means any other Person directly or indirectly controlling or controlled by or under direct or indirect common control with such specified Person. For the purposes of this definition, "control" when used with respect to any specified Person means the power to direct the management and policies of such Person, directly or indirectly, whether through the ownership of voting securities, by contract or otherwise; and the terms "controlling" and "controlled" have meanings correlative to the foregoing.

"Attributable Debt" means, at the time of determination, the then present value (discounted at the actual rate of interest of such transaction) of the obligation of the lessee for net rental payments during the remaining term of the lease (including any period for which such lease has been extended or may, at the option of the lessor, be extended).

"Authenticating Agent" means any Person authorized by the Trustee to act on behalf of the Trustee pursuant to Section 612 to authenticate Securities.

"Authorized Newspaper" means a newspaper (which in the case of Canada, will, if practicable, be The Globe & Mail, in the case of New York, New York will, if practicable, be The Wall Street Journal (Eastern Edition), in the case of the United Kingdom will, if practicable, be The Financial Times (London Edition) and, in the case of Luxembourg, will, if practicable, be The Luxembourg (Wort), in the English language or in an official language of the country of publication, customarily published on each Business Day, whether or not published on Saturdays, Sundays or holidays, and of general circulation in Canada, New York, New York, the United Kingdom or Luxembourg, as applicable. Where successive publications are required to be made in Authorized Newspapers, the successive publications may be made in the same or in different newspapers in the same city meeting the foregoing requirements and in each case on any Business Day.

"Authorizing Resolution" means a copy of a resolution certified by the Secretary or any Assistant Secretary of the Partnership or Petro-Canada to have been duly adopted by the Partners or Board of Directors, as the case may be, and to be in full force and effect on the date of such certification, and delivered to the Trustee.

"Bearer Security" means any Security except a Registered Security.

"Board of Directors" means either the board of directors of Petro-Canada or any duly authorized committee of that board of directors.

"Business Day" when used with respect to any Place of Payment or any other particular location referred to in this Indenture or in the Securities, means, unless otherwise specified with respect to any Securities pursuant to Section 301, any day other than Saturday, Sunday or any other day on which commercial banking institutions in that Place of Payment or other location are closed or required by any applicable law or regulation or executive order to close.

"calculation period" has the meaning specified in Section 311.

"Canadian Taxes" has the meaning specified in Section 1005.

"Capital Lease Obligation" means the obligation of a Person, as lessee, to pay rent or other amounts to the lessor under a lease of property which is required to be classified and accounted for as a capital lease on the consolidated balance sheet of such Person in accordance with GAAP.

"Clearstream" means Clearstream Banking, société anonyme, or its successor.

"Commission" means the U.S. Securities and Exchange Commission, as from time to time constituted, created under the Exchange Act, or, if at any time after the execution of this Indenture such Commission is not existing and performing the duties now assigned to it under the Trust Indenture Act, then the body performing such duties at such time.

"Common Depositary" has the meaning specified in Section 304.

"Consolidated Net Tangible Assets" means the total amount of assets as shown on the most recent annual audited or quarterly unaudited consolidated balance sheet of Petro-Canada and computed in accordance with GAAP, including investments in unconsolidated subsidiaries, after deducting therefrom:

(i) all current liabilities (excluding any current liabilities constituting Funded Debt by reason of their being renewable or extendible);

(ii) all goodwill, trade names, trademarks, patents, unamortized debt discount and expense and other similar intangibles; and

(iii) appropriate adjustments on account of minority interests of other Persons holding stock of a Subsidiary.

"Conversion Date" has the meaning specified in Section 312(d).

"Conversion Event" means the cessation of use of a Foreign Currency both by the government of the country which issued such Currency and by a central bank or other public institution of or within the international banking community for the settlement of transactions.

"Corporate Trust Office" means the office of the Trustee, at which at any time its corporate trust business shall principally be administered, which office at the date hereof is located at 101 Barclay Street, 21st Floor West, New York, New York 10286 — Global Finance Unit, or such other address as the Trustee may designate from time to time by notice to the Holders, Petro-Canada and the Partnership, or the principal corporate trust office of any successor Trustee (or such other address as such successor Trustee may designate from time to time by notice to the Holders, Petro-Canada and the Partnership).

"costs of abandonment" means the costs and expenses incurred in the plugging and abandonment of wells and the decommissioning or removal of structures or Facilities located on an oil, gas or other mineral property (including an oil sands property), and the reclamation and clean-up of such property and related Facilities, interests and surrounding lands whether or not owned by Petro-Canada or any of its Restricted Subsidiaries.

"corporation" includes corporations, associations, companies and business trusts.

"coupon" means any interest coupon appertaining to a Bearer Security.

"covenant defeasance" has the meaning specified in Section 1403.

"Currency" means any currency or currencies or composite currency issued by the government of one or more countries or by any recognized confederation or association of such governments.

"Current Assets" means current assets as determined in accordance with GAAP.

"Debt" means all items which, in accordance with GAAP, would be recorded as debt in the consolidated financial statements of any Person, and in any event, including (without duplication):

(i) any obligation for borrowed money including reimbursement obligations with respect to bankers' acceptances or similar facilities;

(ii) any obligation evidenced by bonds, debentures, notes or other similar instruments, including, without limitation, any such obligations incurred in connection with the acquisition of property, assets or businesses;

(iii) any Capital Lease Obligation;

(iv) any reimbursement obligation with respect to letters of credit issued to secure the payment of any Debt of any Person;

(v) any payment obligation under Financial Instrument Obligations; and

(vi) any guarantee of Debt of another Person.

"Default" means any event which is, or after notice or passage of time or both would be, an Event of Default.

"Defaulted Interest" has the meaning specified in Section 307.

"defeasance" has the meaning specified in Section 1402.

"Depositary" or "Depositary of Securities" means The Depository Trust Company, or any successor thereto, or any other Person designated pursuant to Section 301.

"Dollar", "$" or "U.S.$" means a dollar or other equivalent unit in such coin or Currency of the United States of America as at the time shall be legal tender for the payment of public and private debts.

"Dollar Equivalent of the Foreign Currency" has the meaning specified in Section 312(f).

"Election Date" has the meaning specified in Section 312(f).

"Euroclear" means Euroclear Bank S.A./N.A., or its successor as operator of the Euroclear System.

"Event of Default" has the meaning specified in Section 501.

"Exchange Act" means the United States Securities Exchange Act of 1934, as amended.

"Exchange Date" has the meaning specified in Section 304.

"Exchange Rate Agent" means, with respect to Securities of or within any series, unless otherwise specified with respect to any Securities pursuant to Section 301, a New York clearing house bank, designated pursuant to Section 301 or Section 313.

"Exchange Rate Officer's Certificate" means a certificate setting forth (i) the applicable Market Exchange Rate and (ii) the Dollar or Foreign Currency amounts of principal, and premium, if any, and interest, if any (on an aggregate basis and on the basis of a Security having the lowest denomination principal amount determined in accordance with Section 302 in the relevant Currency), payable with respect to a Security of any series on the basis of such Market Exchange Rate, signed by the Treasurer, the Controller or any Vice President of the Issuer.

"Excluded Holder" has the meaning specified in Section 1005.

"Extension Notice" has the meaning specified in Section 308.

"Extension Period" has the meaning specified in Section 308.

"Facilities" means any drilling equipment, production equipment and platforms or mining equipment; pipelines, pumping stations and other pipeline facilities; terminals, warehouses and storage facilities; bulk plants; production, separation, dehydration, extraction, treating and processing facilities; gasification or natural gas liquefying facilities; flares, stacks and burning towers; floatation mills, crushers and ore handling facilities; tank cars, tankers, barges, ships, trucks, automobiles, airplanes and other marine, automotive, aeronautical and other similar moveable facilities or equipment; computer systems and associated programs or office equipment; roads, airports, docks (including drydocks); reservoirs and waste disposal facilities; sewers; generating plants (including power plants) and electric lines; telephone and telegraph lines, radio and other communications facilities; townsites, housing facilities, recreation halls, stores and other related facilities; and similar facilities and equipment of or associated with any of the foregoing.

"Final Maturity" has the meaning specified in Section 308.

"Financial Instrument Obligations" means obligations arising under:

(i) interest rate swap agreements, forward rate agreements, floor, cap or collar agreements, futures or options, insurance or other similar agreements or arrangements, or any combination thereof, entered into by a Person relating to interest rates or pursuant to which the price, value or amount payable thereunder is dependent or based upon interest rates in effect from time to time or fluctuations in interest rates occurring from time to time;

(ii) currency swap agreements, cross-currency agreements, forward agreements, floor, cap or collar agreements, futures or options, insurance or other similar agreements or arrangements, or any combination thereof, entered into by a Person relating to currency exchange rates or pursuant to which the price, value or amount payable thereunder is dependent or based upon currency exchange rates in effect from time to time or fluctuations in currency exchange rates occurring from time to time; and

(iii) commodity swap or hedging agreements, floor, cap or collar agreements, commodity futures or options or other similar agreements or arrangements, or any combination thereof, entered into by a Person relating to one or more commodities or pursuant to which the price, value or amount payable thereunder is dependent or based upon the price of one or more commodities in effect from time to time or fluctuations in the price of one or more commodities occurring from time to time.

"First Currency" has the meaning specified in Section 115.

"Foreign Currency" means any Currency other than Currency of the United States.

"Funded Debt" means all Debt which, by its terms, matures more than 12 months from the date such Debt was incurred, or having a maturity of less than 12 months but by its terms being renewable or extendable, at the sole option of the obligor, beyond 12 months from the date such Debt was incurred.

"GAAP" means generally accepted accounting principles in Canada in effect from time to time, unless Petro-Canada's most recent audited or quarterly unaudited financial statements are not prepared in accordance with generally accepted accounting principles in Canada, in which case GAAP shall mean generally accepted accounting principles in the United States in effect from time to time.

"Government Obligations" means, unless otherwise specified with respect to any series of Securities pursuant to Section 301, securities which are (i) direct obligations of the government which issued the Currency in which the Securities of a particular series are payable or (ii) obligations of a Person controlled or supervised by and acting as an agency or instrumentality of the government which issued the Currency in which the Securities of such series are payable, the payment of which is unconditionally guaranteed by such government, which, in either case, are full faith and credit obligations of such government payable in such Currency and are not callable or redeemable at the option of the issuer thereof and shall also include a depository receipt issued by a bank or trust company as custodian with respect to any such Government Obligation or a specific payment of interest on or principal of any such Government Obligation held by such custodian for the account of the holder of a depository receipt; provided that (except as required by law) such custodian is not authorized to make any deduction from the amount payable to the holder of such depository receipt from any amount received by the custodian in respect of the Government Obligation or the specific payment of interest or principal of the Government Obligation evidenced by such depository receipt.

"Guarantee" means, with respect to any particular series of Securities, any guarantee of the Guarantor as endorsed on a Security of the Partnership authenticated and delivered pursuant to this Indenture and shall include the Guarantee set forth in Section 1601 of this Indenture.

"Guarantor" means the Person named as the "Guarantor" in the first paragraph of this instrument until a successor Person shall have become such pursuant to the applicable provisions of this Indenture, and thereafter "Guarantor" shall mean such successor Person.

"Holder" means, in the case of a Registered Security, the Person in whose name a Security is registered in the Security Register and, in the case of a Bearer Security, the bearer thereof and, when used with respect to any coupon, shall mean the bearer thereof.

"Indenture" means this instrument as originally executed and as it may from time to time be supplemented or amended by one or more indentures supplemental hereto entered into pursuant to the applicable provisions hereof, and shall include the terms of particular series of Securities established as contemplated by Section 301; provided, however, that, if at any time more than one Person is acting as Trustee under this instrument, "Indenture" shall mean, with respect to any one or more series of Securities for which such Person is Trustee, this instrument as originally executed or as it may from time to time be supplemented or amended by one or more indentures supplemental hereto entered into pursuant to the applicable provisions hereof and shall include the terms of particular series of Securities for which such Person is Trustee established as contemplated by Section 301, exclusive, however, of any provisions or terms which relate solely to other series of Securities for which such Person is not Trustee, regardless of when such terms or provisions were adopted, and exclusive of any provisions or terms adopted by means of one or more indentures supplemental hereto executed and delivered after such Person had become such Trustee but to which such Person, as such Trustee, was not a party.

"Indexed Security" means a Security the terms of which provide that the principal amount thereof payable at Stated Maturity may be more or less than the principal face amount thereof at original issuance.

"interest", when used with respect to an Original Issue Discount Security which by its terms bears interest only after Maturity, means interest payable after Maturity at the rate prescribed in such Original Issue Discount Security.

"Interest Payment Date", when used with respect to any Security, means the Stated Maturity of an installment of interest on such Security.

"Issue Date" means the date that any series of Securities is first issued under this Indenture.

"Issuer" means

(i) Petro-Canada in relation to any series of Securities issued by Petro-Canada, and

(ii) the Partnership in relation to any series of Securities issued by the Partnership,

as the context requires.

"Issuer Request" or "Issuer Order" means a written request or order signed in the name of the Issuer by any two Officers and delivered to the Trustee.

"Judgment Currency" has the meaning specified in Section 114.

"Managing Partner" means at any particular time the managing partner of the Partnership, being at the date hereof Petro-Canada.

"mandatory sinking fund payment" has the meaning specified in Section 1201.

"Market Exchange Rate" means, unless otherwise specified with respect to any Securities pursuant to Section 301, (i) for any conversion of Dollars into any Foreign Currency, the noon (New York, New York time) buying rate for such Foreign Currency for cable transfers quoted in New York, New York as certified for customs purposes by the Federal Reserve Bank of New York and (ii) for any conversion of one Foreign Currency into Dollars or another Foreign Currency, the spot rate at noon local time in the relevant market at which, in accordance with normal banking procedures, the Dollars or Foreign Currency into which conversion is being made could be purchased with the Foreign Currency from which conversion is being made from major banks located in either New York, New York, London, England or any other principal market for Dollars or such purchased Foreign Currency, in each case determined by the Exchange Rate Agent. Unless otherwise specified with respect to any Securities pursuant to Section 301, in the event of the unavailability of any of the exchange rates provided for in the foregoing clauses (i) and (ii), the Exchange Rate Agent shall use, in its sole discretion and without liability on its part, such quotation of the Federal Reserve Bank of New York as of the most recent available date, or quotations from one or more major banks in New York, New York, London, England or another principal market for the Currency in question, or such other quotations as the Exchange Rate Agent shall deem appropriate. Unless otherwise specified by the Exchange Rate Agent, if there is more than one market for dealing in any Currency by reason of foreign exchange regulations or otherwise, the market to be used in respect of such Currency shall be that upon which a non resident issuer of securities designated in such Currency would purchase such Currency in order to make payments in respect of such securities.

"Maturity" means, when used with respect to any Security, the date on which the principal of such Security or an installment of principal becomes due and payable as therein or herein provided, whether at the Stated Maturity or by declaration of acceleration, notice of redemption, notice of option to elect repayment or otherwise.

"Non-Recourse Debt" means at any time Debt incurred to provide funds for or otherwise finance (directly or indirectly) (i) the purchase price or other acquisition cost of any property not owned by Petro-Canada or a Subsidiary on the Issue Date, or (ii) costs and expenses incurred after the Issue Date for the construction, development or installation of, or improvements to, any property, or (iii) the costs and expenses incurred after the Issue Date in connection with acquisition, surveying, exploration, drilling, development, extraction, operation or production relating to or arising in connection with any oil, gas or other mineral property (including oil sands property), including costs incurred for the construction, alteration, repair, improvement or operation of any and all Facilities relating to such property, or to projects, ventures or other arrangements of which such property forms a part or which relate to such property, whether or not such Facilities are in whole or in part located (or from time to time located) at or on such property, and all related costs of abandonment, provided that at such time the recourse of the lender thereof (including any agent, trustee, receiver or other person acting on behalf of such lender) in respect of such Debt is limited in all circumstances to (A) the property that is the subject of the acquisition, construction, development or other relevant activities referred to in clauses (i), (ii) or (iii) above, and to the receivables, inventory, equipment, chattel payables, contracts, intangibles and other assets, rights or collateral connected with such property and the proceeds thereof, and (B) in the case of any Debt referred to in clause (iii), any contiguous or associated oil, gas or mineral properties (including oil sands properties) and any Facilities or other property used or to be used in connection with any such oil, gas or mineral properties (including oil sands properties), whether or not such Facilities are located (or located from time to time) at or on such property, other than recourse (which shall be on an unsecured basis) against the other property of Petro-Canada or any Subsidiary for a breach of representations and warranties or non-financial covenants made by such person in connection with such Debt to the extent such representations and warranties or non-financial covenants are customarily given in similar type financings.

"Notice of Default" has the meaning specified in Section 501.

"Officer" means any one of the Chairman, President, Chief Executive Officer, Chief Financial Officer, Vice President, Treasurer, Controller, Secretary or Assistant Secretary of the Partnership or Petro-Canada, as the case may be, and in the case of the Partnership includes any Person holding any such office in respect of the Managing Partner.

"Officers' Certificate" means a certificate, which shall comply with this Indenture, signed by any two Officers and delivered to the Trustee.

"Opinion of Counsel" means a written opinion of counsel, who may be counsel for the Partnership or Petro-Canada, including an employee of the Partnership or Petro-Canada, and who shall be reasonably acceptable to the Trustee.

"Optional Reset Date" has the meaning specified in Section 307.

"optional sinking fund payment" has the meaning specified in Section 1201.

"Original Issue Discount Security" means any Security which provides for an amount less than the principal amount thereof to be due and payable upon a declaration of acceleration of the Maturity thereof pursuant to Section 502.

"Other Currency" has the meaning specified in Section 115.

"Outstanding", when used with respect to Securities, means, as of the date of determination, all Securities theretofore authenticated and delivered under this Indenture, except:

(i) Securities theretofore cancelled by the Trustee or delivered to the Trustee for cancellation;

(ii) Securities, or portions thereof, for which money in the necessary amount relating to payment, redemption or repayment at the option of the Holders has been deposited with the Trustee or any Paying Agent (other than the Issuer or Guarantor acting as Paying Agent) in trust or set aside and segregated in trust by the Issuer or the Guarantor or any other obligor upon the Securities (if the Issuer or Guarantor shall act as Paying Agent) for the Holders of such Securities and any coupons appertaining thereto; provided that, if such Securities are to be redeemed, notice of such redemption has been duly given pursuant to this Indenture or provision therefor satisfactory to the Trustee has been made;

(iii) Securities, except to the extent provided in Sections 1402 and 1403, with respect to which the Issuer has effected defeasance and/or covenant defeasance as provided in Article Fourteen; and

(iv) Securities which have been paid pursuant to Section 306 or in exchange for or in lieu of which other Securities have been authenticated and delivered pursuant to this Indenture, other than any such Securities in respect of which there shall have been presented to the Trustee proof satisfactory to it that such Securities are held by a protected purchaser (as defined in Article 8 of the UCC) in whose hands such Securities are valid obligations of the Issuer or, if applicable, the Guarantor;

provided, however, that in determining whether the Holders of the requisite principal amount of the Outstanding Securities have given any request, demand, authorization, direction, notice, consent or waiver hereunder or are present at a meeting of Holders for quorum purposes, and for the purpose of making the calculations required by Section 313 of the Trust Indenture Act, (a) the principal amount of an Original Issue Discount Security that may be counted in making such determination or calculation and that shall be deemed to be Outstanding for such purpose shall be equal to the amount of principal thereof that would be (or shall have been declared to be) due and payable, at the time of such determination, upon a declaration of acceleration of the maturity thereof pursuant to Section 502, (b) the principal amount of any Security denominated in a Foreign Currency that may be counted in making such determination or calculation and that shall be deemed Outstanding for such purpose shall be equal to the Dollar Equivalent of the Foreign Currency, determined as of the date such Security is originally issued by the Issuer, as set forth in an Exchange Rate Officer's Certificate delivered to the Trustee, of the principal amount (or, in the case of an Original Issue Discount Security, the Dollar Equivalent of the Foreign Currency as of such date of original issuance of the amount determined as provided in clause (a) above) of such Security, (c) the principal amount of any Indexed Security that may be counted in making such determination or calculation and that shall be deemed outstanding for such purpose shall be equal to the principal face amount of such Indexed Security at original issuance, unless otherwise provided with respect to such Security pursuant to Section 301, and (d) Securities owned by the Issuer, the Guarantor or any other obligor upon the Securities or any Affiliate of the Issuer, the Guarantor or of such other obligor shall be disregarded and deemed not to be Outstanding, except that, in determining whether the Trustee shall be protected in making such calculation or in relying upon any such request, demand, authorization, direction, notice, consent or waiver, only Securities which the Trustee knows to be so owned shall be so disregarded. Securities so owned which have been pledged in good faith may be regarded as Outstanding if the pledgee establishes to the satisfaction of the Trustee the pledgee's right so to act with respect to such Securities and that the pledgee is not the Issuer, the Guarantor or any other obligor upon the Securities or any Affiliate of the Issuer, the Guarantor or such other obligor.

"Partners" means the partners of the Partnership, being at the date hereof Petro-Canada and 6179568 Canada Inc.

"Partnership" means the Person named as the "Partnership" in the first paragraph of this Indenture until another Person shall have become the successor thereto pursuant to the applicable provisions of this Indenture, and thereafter "Partnership" shall mean such successor Person.

"Paying Agent" means any Person (including the Issuer or Guarantor acting as Paying Agent) authorized by the Issuer of any series of Securities to pay the principal of, or premium, if any, or interest, if any, on any series of Securities on behalf of the Issuer.

"Permitted Encumbrances" means

(i) any Security Interest existing as of the Issue Date;

(ii) any Security Interest existing on the property of any Person when such Person becomes a Restricted Subsidiary, or arising thereafter pursuant to contractual commitments entered into prior to and not in contemplation of such Person becoming a Restricted Subsidiary;

(iii) any Security Interest on the property of any Person which Security Interest exists at the time such Person is merged into or amalgamated or consolidated with Petro-Canada or a Restricted Subsidiary, or such property is otherwise acquired by Petro-Canada or a Restricted Subsidiary (including by way of lease), provided that such Security Interest does not extend to property owned by Petro-Canada or a Restricted Subsidiary prior to such merger, amalgamation, consolidation or acquisition;

(iv) any Security Interest on property acquired by Petro-Canada or a Restricted Subsidiary after the Issue Date given in connection with a Capital Lease Obligation;

(v) any Security Interest given in connection with a Sale and Leaseback Transaction permitted under Section 1008(3);

(vi) any Security Interest in favor of Petro-Canada, any Restricted Subsidiary or any wholly-owned Subsidiary;

(vii) any Security Interest in Current Assets given to secure any Debt repayable on demand or maturing, including any right of extension or renewal, within 12 months after the date such Debt is incurred;

(viii) any Security Interest granted (a) on cash or securities issued by the United States or Canada or any agency or instrumentality of the United States or Canada or any state or province thereof, as the case may be, or (b) in the ordinary course of business, in either case in connection with Financial Instrument Obligations;

(ix) any Security Interest in any Restricted Property in favor of any federal government or any province, state or territory thereof or any municipality therein or any political subdivision, department, agency or instrumentality of any of them to secure the performance of any covenant or obligation to or in favor of or entered into at the request of such authorities where such security is required pursuant to any contract, statute or regulation or with respect to any franchise, grant, license or permit (including related to periodic payments in connection therewith) or arises by operation of law and any defects in title to structures or other facilities arising solely from the fact that such structures or facilities are constructed or installed on lands held by the Petro-Canada under government permits, leases or grants, provided that such Security Interest is not given in connection with borrowed money;

(x) any Security Interest in any oil, gas or other mineral property or products derived from such property to secure obligations incurred or guarantees of obligations incurred in connection with or necessarily incidental to commitments of purchase or sale of, or the transportation, storage or distribution of, such property or the products derived from such property, provided that such Security Interest is not given in connection with borrowed money;

(xi) any Security Interest arising under partnership agreements, oil and natural gas leases, overriding royalty agreements, net profits agreements, royalty trust agreements, master limited partnership agreements, farm-out agreements, division orders, utilization and pooling designations, declarations, orders and agreements, joint venture agreements, development agreements, operating agreements, production sales contracts (including security in respect of take or pay or similar obligations thereunder), area of mutual interest agreements, natural gas balancing or deferred production agreements, injection, repressuring and recycling agreements, salt water or other disposal agreements, seismic or geophysical permits or agreements, which in each of the foregoing cases is customary in the oil and natural gas business, and other similar agreements which are customary in the oil and natural gas business, provided that such Security Interest is (a) limited to the assets that are the subject of the relevant agreement and the proceeds of such assets, and (b) not given in connection with borrowed money;

(xii) any Security Interest (a) securing the purchase price or other acquisition cost of any property not owned by Petro-Canada or a Subsidiary on the Issue Date or (b) securing costs and expenses incurred after the Issue Date for the construction, development or installation of, or improvements to, any property, or (c) securing the costs and expenses incurred after the Issue Date in connection with surveying, exploration, drilling, development, extraction, operation or production relating to or arising in connection with any oil, gas or other mineral property (including oil sands property) or with the acquisition thereof, including costs incurred for the acquisition, construction, alteration, repair, improvement or operation of any and all Facilities relating to such property, or to projects, ventures or other arrangements of which such property forms a part or which relate to such property, whether or not such Facilities are in whole or in part located (or from time to time located) at or on such property, and all related costs of abandonment, or (d) securing Debt created, issued, incurred or assumed by Petro-Canada or any of its Subsidiaries to provide funds for, or otherwise finance (directly or indirectly), the activities set forth in clauses (a), (b) and (c) above, if such Debt is incurred prior to, during or within two years after the completion of acquisition, construction, development or the other relevant activities referred to in clauses (a), (b) or (c) above and does not exceed the cost of such acquisition, construction, development or other activities, as applicable; provided, however, that any such Security Interest shall be limited to (A) the property that is the subject of the acquisition, construction, development or other relevant activities referred to in clauses (a), (b) or (c) above, and to the receivables, inventory, equipment, chattel payables, contracts, intangibles and other assets, rights or collateral connected with such property and the proceeds thereof, and (B) in the case of any Security Interest referred to in clause (c), any contiguous or associated oil, gas or mineral properties (including oil sands properties) and any Facilities or other property, in each case, used or to be used in connection with any such oil, gas or mineral properties (including oil sands properties), whether or not such Facilities are located (or located from time to time) at or on such property;

(xiii) any Security Interest on cash or securities deposited with a trustee or collateral agent to defease Debt secured by such Security Interest;

(xiv) any Security Interest arising by reason of (a) any judgment, decree or order of any court, so long as any appropriate legal proceedings which may have been initiated for the review of such judgment, decree or order shall not have been finally terminated or so long as the period within which such proceedings may be initiated shall not have expired, or (b) any deposit or pledge with any surety company or clerk of any court, or in escrow, as collateral in connection with, or in lieu of, any bond on appeal from any judgment or decree against Petro-Canada or any Subsidiary, or in connection with other proceedings or actions at law or in equity by or against Petro-Canada or any Subsidiary, provided that such Security Interest is not given in connection with borrowed money;

(xv) any Security Interest referred to in the foregoing clauses or this clause securing any extension, renewal, alteration or replacement of all or part of any Debt secured by such Security Interest, provided that:

(a) the principal amount of such Debt is not increased by an amount exceeding the cost of such extension, renewal, alteration or replacement, including but not limited to all fees and expenses incurred in connection therewith; and

(b) the Security Interest is limited to all or part of the property which secured the Debt prior to it being extended, renewed, altered or replaced, plus improvements on such property and the proceeds thereof and all rights associated therewith; and

(xvi) any Security Interest that would otherwise be prohibited, provided that the aggregate of all Debt outstanding and secured under this clause and all Attributable Debt in respect of Sale and Leaseback Transactions entered into after the Issue Date which were permitted under Section 1008(2) of this Indenture does not (calculated at the time of the granting of the Security Interest) exceed an amount equal to 10% of Consolidated Net Tangible Assets.

Any transaction consisting of the sale (including any forward sale) or other transfer of oil, gas or other minerals, whether in place or when produced, for a period of time until, or in amount such that, the purchaser will realize a specified amount of money or minerals or any other interest in property (commonly characterized as a "production payment"), will not constitute a Security Interest and will not result in Petro-Canada or a Restricted Subsidiary being required to secure the debt securities.

"Person" means any individual, corporation, partnership, limited liability company, joint venture, association, joint stock company, trust, unincorporated organization or government or any agency or political subdivision thereof.

"Petro-Canada" means the corporation having that name duly organized and existing under the laws of Canada until another Person shall have become the successor thereto pursuant to the applicable provisions of this Indenture.

"Place of Payment" means, when used with respect to the Securities of or within any series, the place or places where the principal of, and premium, if any, and interest, if any, on such Securities are payable as specified as contemplated by Sections 301 and 1002.

"Predecessor Security" of any particular Security means every previous Security evidencing all or a portion of the same debt as that evidenced by such particular Security; and, for the purposes of this definition, any Security authenticated and delivered under Section 306 in exchange for or in lieu of a mutilated, destroyed, lost or stolen Security or a Security to which a mutilated, destroyed, lost or stolen coupon appertains shall be deemed to evidence the same debt as the mutilated, destroyed, lost or stolen Security or the Security to which the mutilated, destroyed, lost or stolen coupon appertains, as the case may be.

"property" means all assets and property, both real and personal, of any Person.

"Redemption Date", when used with respect to any Security to be redeemed, in whole or in part, means the date fixed for such redemption by or pursuant to this Indenture.

"Redemption Price", when used with respect to any Security to be redeemed, in whole or in part, means the price at which it is to be redeemed pursuant to this Indenture, plus accrued and unpaid interest thereon, if any, to the Redemption Date.

"Registered Security" means any Security registered in the Security Register.

"Regular Record Date" for the interest payable on any Interest Payment Date on the Registered Securities of or within any series means the date specified for that purpose as contemplated by Section 301.

"Repayment Date" means, when used with respect to any Security to be repaid at the option of the Holder, the date fixed for such repayment pursuant to this Indenture.

"Repayment Price" means, when used with respect to any Security to be repaid at the option of the Holder, the price at which it is to be repaid pursuant to this Indenture.

"Required Currency" has the meaning specified in Section 114.

"Reset Notice" has the meaning specified in Section 307.

"Responsible Officer", when used with respect to the Trustee, means any officer within the corporate trust department of the Trustee, including any vice president, any assistant vice president, any assistant secretary, any assistant treasurer, any trust officer or assistant trust officer or any other officer of the Trustee customarily performing functions similar to those performed by the persons who at the time shall be such officers, respectively, or to whom any corporate trust matter is referred because of such person's knowledge of and familiarity with the particular subject and who shall have direct responsibility for the administration of this Indenture.

"Restricted Property" means any oil, gas or mineral property of a primary nature located in the United States, Canada or the United Kingdom, and any facilities located in the United States, Canada or the United Kingdom directly related to the mining, processing or manufacture of hydrocarbons or minerals, or any of the constituents thereof, and includes Voting Shares or other interests of a Restricted Subsidiary which owns such property or facilities, but does not include (i) any property or facilities used in connection with or necessarily incidental to the purchase, sale, storage, transportation or distribution of hydrocarbons or minerals or products derived therefrom, (ii) any property which, in the opinion of the Board of Directors, is not materially important to the total business conducted by Petro-Canada and its Subsidiaries as an entirety or (iii) any portion of a particular property which, in the opinion of the board of directors of Petro-Canada, is not materially important to the use or operation of such property.

"Restricted Subsidiary" means, on any date, any Subsidiary of Petro-Canada which owns at the time Restricted Property; provided, however, such term shall not include a Subsidiary of Petro-Canada if the amount of Petro-Canada's share of Shareholders' Equity of such Subsidiary constitutes, at the time of determination, less than 2% of the Consolidated Net Tangible Assets of Petro-Canada.

"Sale and Leaseback Transaction" means an arrangement with any lender or investor or to which such lender or investor is a party providing for the leasing by Petro-Canada or a Restricted Subsidiary of any property owned by Petro-Canada or any Subsidiary on the Issue Date.

"Securities" has the meaning stated in the first recital of this Indenture and more particularly means any Securities authenticated and delivered under this Indenture; provided, however, that if at any time there is more than one Person acting as Trustee under this Indenture, "Securities" with respect to this Indenture as to which such Person is Trustee shall have the meaning stated in the first recital of this Indenture and shall more particularly mean Securities authenticated and delivered under this Indenture, exclusive, however, of Securities of any series as to which such Person is not Trustee.

"Security Interest" means any security by way of an assignment, mortgage, charge, pledge, lien, encumbrance, title retention agreement or other security interest whatsoever, howsoever created or arising, whether absolute or contingent, fixed or floating, perfected or not, but not including any security interest in respect of a lease which does not create or evidence a Capital Lease Obligation or any encumbrance that may be deemed to arise solely as a result of entering into an agreement not in violation of this Indenture to sell or otherwise transfer property.

"Security Register" and "Security Registrar" have the respective meanings specified in Section 305.

"Shareholders' Equity" means shareholders' equity of Petro-Canada as shown on the most recent annual audited or quarterly unaudited consolidated balance sheet of Petro-Canada and computed in accordance with GAAP.

"Significant Subsidiary" means a Restricted Subsidiary that constitutes a "significant subsidiary" as defined in Rule 1-02 of Regulation S-X under the Exchange Act.

"Special Record Date" for the payment of any Defaulted Interest on the Registered Securities of or within any series means a date fixed by the Trustee pursuant to Section 307.

"Stated Maturity" means, when used with respect to any Security or any installment of principal thereof or interest thereon, the date specified in such Security or a coupon representing such installment of interest as the fixed date on which the principal of such Security or such installment of principal or interest is due and payable, as such date may be extended pursuant to the provisions of Section 308.

"Subsequent Interest Period" has the meaning specified in Section 307.

"Subsidiary" means any corporation or other Person of which Voting Shares or other interests carrying more than 50% of the voting rights attached to all outstanding Voting Shares or other interests are owned, directly or indirectly, by Petro-Canada or by one or more Subsidiaries of Petro-Canada, or by Petro-Canada and one or more Subsidiaries of Petro-Canada.

"Trust Indenture Act" or "TIA" means the Trust Indenture Act of 1939, as amended, as in force at the date as of which this Indenture was executed, except as provided in Section 905.

"Trustee" means the Person named as the "Trustee" in the first paragraph of this Indenture until a successor Trustee shall have become such pursuant to the applicable provisions of this Indenture, and thereafter "Trustee" shall mean or include each Person who is then a Trustee hereunder; provided, however, that if at any time there is more than one such Person, "Trustee" as used with respect to the Securities of any series shall mean only the Trustee with respect to Securities of that series.

"UCC" means the New York uniform commercial code in effect from time to time.

"United States" or "U.S." means, unless otherwise specified with respect to any Securities pursuant to Section 301, the United States of America (including the States and the District of Columbia), its territories, its possessions and other areas subject to its jurisdiction.

"United States Person" means, unless otherwise specified with respect to any Securities pursuant to Section 301, an individual who is a citizen or resident of the United States, any other Person created or organized in or under the laws of the United States or an estate or trust the income of which is subject to United States federal income taxation regardless of its source.

"Valuation Date" has the meaning specified in Section 312(c).

"Vice President", when used with respect to the Partnership, Petro-Canada or the Trustee, means any vice-president, whether or not designated by a number or a word or words added before or after the title "vice president".

"Voting Shares" means shares of any class of a corporation having under all circumstances the right to vote for the election of the directors of such corporation, provided that, for the purpose of this definition, shares which only carry the right to vote conditionally on the happening of an event shall not be considered Voting Shares whether or not such event shall have happened.

"Yield to Maturity" means the yield to maturity, computed at the time of issuance of a Security (or, if applicable, at the most recent redetermination of interest on such Security) and as set forth in such Security in accordance with generally accepted United States bond yield computation principles.

SECTION 102 Compliance Certificates and Opinions.

Upon any written application or written request by the Partnership or Petro-Canada (either in its capacity as Issuer or Guarantor) to the Trustee to take any action under any provision of this Indenture, the Partnership or Petro-Canada, as the case may be, shall furnish to the Trustee an Officers' Certificate stating that all conditions precedent, if any, provided for in this Indenture (including any covenant compliance with which constitutes a condition precedent) relating to the proposed action have been complied with and an Opinion of Counsel stating that in the opinion of such counsel all such conditions precedent, if any, have been complied with, except that in the case of any such application or request as to which the furnishing of such documents is specifically required by any provision of this Indenture relating to such particular application or request, no additional certificate or opinion need be furnished, and each such Officers' Certificate or Opinion of Counsel shall comply with the requirements of the Trust Indenture Act and any other requirements set forth in this Indenture.

Every certificate or opinion with respect to compliance with a covenant or condition provided for in this Indenture (other than pursuant to Section 1004) shall include:

(1) a statement that each individual signing such certificate or opinion has read such covenant or condition and the definitions herein relating thereto;

(2) a brief statement as to the nature and scope of the examination or investigation upon which the statements or opinions contained in such certificate or opinion are based;

(3) a statement that, in the opinion of each such individual, he or she has made such examination or investigation as is necessary to enable him or her to express an informed opinion as to whether or not such covenant or condition has been complied with; and

(4) a statement as to whether, in the opinion of each such individual, such covenant or condition has been complied with.

SECTION 103 Form of Documents Delivered to Trustee.

In any case where several matters are required to be certified by, or covered by an opinion of, any specified Person, it is not necessary that all such matters be certified by, or covered by the opinion of, only one such Person, or that they be so certified or covered by only one document, but one such Person may certify or give an opinion with respect to some matters and one or more other such Persons may certify of give an opinion as to other matters, and any such Person may certify or give an opinion as to such matters in one or several documents.

Any certificate or opinion of an officer of the Partnership or Petro-Canada may be based, insofar as it relates to legal matters, upon an Opinion of Counsel, a certificate of, or representations by, counsel, unless such officer knows, or in the exercise of reasonable care should know, that the certificate or opinion or representations with respect to the matters upon which his or her certificate or opinion is based are erroneous. Any such certificate or Opinion of Counsel may be based, insofar as it relates to factual matters, upon a certificate or opinion of, or representations by, an officer or officers of the Partnership or Petro-Canada stating that the information with respect to such factual matters is in the possession of the Partnership or Petro-Canada, unless such counsel knows, or in the exercise of reasonable care should know, that the certificate or opinion or representations with respect to such matters are erroneous.

Any certificate or opinion of an officer of the Partnership or Petro-Canada or of counsel may be based, insofar as it relates to accounting matters, upon a certificate or opinion of, or representations by, an accountant or firm of accountants in the employ of the Partnership or Petro-Canada, unless such officer or counsel, as the case may be, knows, or in the exercise of reasonable care should know, that the certificate or opinion or representations with respect to the accounting matters upon which such certificate or opinion may be based are erroneous.

Where any Person is required to make, give or execute two or more applications, requests, consents, certificates, statements, opinions or other instruments under this Indenture, they may, but need not, be consolidated and form one instrument.

SECTION 104 Acts of Holders.

(a) Any request, demand, authorization, direction, notice, consent, waiver or other action provided by this Indenture to be given or taken by Holders of the Outstanding Securities of all series or one or more series, as the case may be, may be embodied in and evidenced by one or more instruments of substantially similar tenor signed by such Holders in person or by agents duly appointed in writing. If Securities of a series are issuable as Bearer Securities, any request, demand, authorization, direction, notice, consent, waiver or other action provided by this Indenture to be given or taken by Holders of such series may, alternatively, be embodied in and evidenced by the record of Holders of Securities of such series voting in favor thereof, either in person or by proxies duly appointed in writing, at any meeting of Holders of Securities of such series duly called and held in accordance with the provisions of Article Fifteen, or a combination of such instruments and any such record. Except as herein otherwise expressly provided, such action shall become effective when such instrument or instruments or record or both are delivered to the Trustee and, where it is hereby expressly required, to the applicable Issuer or the Guarantor or to both. Such instrument or instruments and any such record (and the action embodied therein and evidenced thereby) are herein sometimes referred to as the "Act" of the Holders signing such instrument or instruments or so voting at any such meeting. Proof of execution of any such instrument or of a writing appointing any such agent, or of the holding by any Person of a Security, shall be sufficient for any purpose of this Indenture and conclusive in favor of the Trustee, the Partnership and Petro-Canada, if made in the manner provided in this Section 104. The record of any meeting of Holders of Securities shall be proved in the manner provided in Section 1506.

(b) The fact and date of the execution by any Person of any such instrument or writing may be proved by the affidavit of a witness of such execution or by a certificate of a notary public or other officer authorized by law to take acknowledgments of deeds, certifying that the individual signing such instrument or writing acknowledged to him or her the execution thereof. Where such execution is by a signer acting in a capacity other than his or her individual capacity, such certificate or affidavit shall also constitute sufficient proof of authority. The fact and date of the execution of any such instrument or writing, or the authority of the Person executing the same, may also be proved in any other manner which the Trustee deems sufficient.

(c) The principal amount and serial numbers of Registered Securities held by any Person, and the date of holding the same, shall be proved by the Security Register.

(d) The principal amount and serial numbers of Bearer Securities held by any Person, and the date of holding the same, may be proved by the production of such Bearer Securities or by a certificate executed, as depositary, by any trust company, bank, banker or other depositary, wherever situated, if such certificate shall be deemed by the Trustee to be satisfactory, showing that at the date therein mentioned such Person had on deposit with such depositary, or exhibited to it, the Bearer Securities therein described; or such facts may be proved by the certificate or affidavit of the Person holding such Bearer Securities, if such certificate or affidavit is deemed by the Trustee to be satisfactory. The Trustee and the Issuer or the Guarantor, as the case may be, may assume that such ownership of any Bearer Security continues until (1) another certificate or affidavit bearing a later date issued in respect of the same Bearer Security is produced, or (2) such Bearer Security is produced to the Trustee by some other Person, or (3) such Bearer Security is surrendered in exchange for a Registered Security, or (4) such Bearer Security is no longer Outstanding. The principal amount and serial numbers of Bearer Securities held by any Person, and the date of holding the same, may also be proved in any other manner that the Trustee deems sufficient.

(e) If either the Issuer or the Guarantor shall solicit from the Holders of Registered Securities any request, demand, authorization, direction, notice, consent, waiver or other Act, the Issuer or the Guarantor, as the case may be, may, at its option, by or pursuant to an Authorizing Resolution, fix in advance a record date for the determination of Holders entitled to give such request, demand, authorization, direction, notice, consent, waiver or other Act, but the Issuer or the Guarantor, as the case may be, shall have no obligation to do so. Notwithstanding Section 316(c) of the Trust Indenture Act, such record date shall be the record date specified in or pursuant to such Authorizing Resolution, which shall be a date not earlier than the date 30 days prior to the first solicitation of Holders generally in connection therewith and not later than the date such solicitation is completed. If such a record date is fixed, such request, demand, authorization, direction, notice, consent, waiver or other Act may be given before or after such record date, but only the Holders of record at the close of business on such record date shall be deemed to be Holders for the purposes of determining whether Holders of the requisite proportion of Outstanding Securities have authorized or agreed or consented to such request, demand, authorization, direction, notice, consent, waiver or other Act, and for that purpose the Outstanding Securities shall be computed as of such record date; provided that no such authorization, agreement or consent by the Holders on such record date shall be deemed effective unless it shall become effective pursuant to the provisions of this Indenture not later than eleven months after the record date.

(f) Any request, demand, authorization, direction, notice, consent, waiver or other Act of the Holder of any Security shall bind every future Holder of the same Security and the Holder of every Security issued upon the registration of transfer thereof or in exchange therefor or in lieu thereof in respect of anything done, omitted or suffered to be done by the Trustee, the Issuer or the Guarantor in reliance thereon, whether or not notation of such action is made upon such Security.

SECTION 105 Notices, etc. to Trustee, the Partnership or Petro-Canada.

Any request, demand, authorization, direction, notice, consent, waiver or Act of Holders or other documents provided or permitted by this Indenture to be made upon, given or furnished to, or filed with,

(1) the Trustee by any Holder or by the Partnership or Petro-Canada shall be sufficient for every purpose hereunder if made, given, furnished or filed in writing to or with the Trustee at its Corporate Trust Office, Attention: Corporate Trust Administration — Global Finance Unit, or

(2) the Partnership or Petro-Canada (either in its capacity as Isser or Guarantor) by the Trustee or by any Holder shall be sufficient for every purpose hereunder (unless otherwise herein expressly provided) if in writing and mailed, first class postage prepaid, to the Partnership or the Guarantor, as the case may be, Attention: Chief Financial Officer, or such other officer as the Partnership or the Guarantor may designate on written notice to the Trustee, addressed to it at 150 - 6^th Avenue S.W., Calgary, Alberta, Canada T2P 3E3 or at any other address previously furnished in writing to the Trustee by the Partnership or Petro-Canada, as the case may be.

SECTION 106 Notice to Holders; Waiver.

Where this Indenture provides for notice of any event to Holders of Registered Securities by the Partnership, Petro-Canada or the Trustee, such notice shall be sufficiently given (unless otherwise herein expressly provided) if in writing and mailed, first class postage prepaid, to each such Holder affected by such event, at his or her address as it appears in the Security Register, not later than the latest date, and not earlier than the earliest date, prescribed for the giving of such notice. In any case where notice to Holders of Registered Securities is given by mail, neither the failure to mail such notice, nor any defect in any notice so mailed, to any particular Holder shall affect the sufficiency of such notice with respect to other Holders of Registered Securities or the sufficiency of any notice to Holders of Bearer Securities given as provided. Any notice mailed to a Holder in the manner herein prescribed shall be conclusively deemed to have been received by such Holder, whether or not such Holder actually receives such notice.

In case, by reason of the suspension of or irregularities in regular mail service or by reason of any other cause, it shall be impractical to mail notice of any event to Holders of Registered Securities when such notice is required to be given pursuant to any provision of this Indenture, then any manner of giving such notice as shall be satisfactory to the Trustee shall be deemed to be sufficient giving of such notice for every purpose hereunder.

Except as otherwise expressly provided herein or otherwise specified with respect to any Securities pursuant to Section 301, where this Indenture provides for notice to Holders of Bearer Securities of any event, such notice shall be sufficiently given to Holders of Bearer Securities if published in an Authorized Newspaper in New York, New York and in such other city or cities as may be specified in such Securities on a Business Day at least twice, the first such publication to be not earlier than the earliest date, and not later than the latest date, prescribed for the giving of such notice. Any such notice shall be deemed to have been given on the date of the first such publication.

In case, by reason of the suspension of publication of any Authorized Newspaper or Authorized Newspapers or by reason of any other cause, it shall be impracticable to publish any notice to Holders of Bearer Securities as provided above, then such notification to Holders of Bearer Securities as shall be given with the approval of the Trustee shall constitute sufficient notice to such Holders for every purpose hereunder. Neither the failure to give notice by publication to Holders of Bearer Securities as provided above, nor any defect in any notice so published, shall affect the sufficiency of such notice with respect to other Holders of Bearer Securities or the sufficiency of any notice to Holders of Registered Securities given as provided herein.

Any request, demand, authorization, direction, notice, consent or waiver required or permitted under this Indenture shall be in the English language, except that any published notice may be in an official language of the country of publication.

Where this Indenture provides for notice in any manner, such notice may be waived in writing by the Person entitled to receive such notice, either before or after the event, and such waiver shall be the equivalent of such notice. Waivers of notice by Holders shall be filed with the Trustee, but such filing shall not be a condition precedent to the validity of any action taken in reliance upon such waiver.

SECTION 107 Effect of Headings and Table of Contents.

The Article and Section headings herein and the Table of Contents are for convenience only and shall not affect the construction hereof.

SECTION 108 Successors and Assigns.

All covenants and agreements in this Indenture by the Partnership, Petro-Canada (either in its capacity as Issuer or Guarantor) and the Trustee shall bind their successors and assigns, whether so expressed or not.

SECTION 109 Separability Clause.

In case any provision in this Indenture or in any Security or coupon shall be invalid, illegal or unenforceable, the validity, legality and enforceability of the remaining provisions shall not in any way be affected or impaired thereby.

SECTION 110 Benefits of Indenture.

Nothing in this Indenture or in the Securities or coupons, express or implied, shall give to any Person, other than the parties hereto, any Authenticating Agent, any Paying Agent, any Security Registrar and their successors hereunder and the Holders of Securities or coupons, any benefit or any legal or equitable right, remedy or claim under this Indenture.

SECTION 111 Governing Law.

This Indenture and the Securities and coupons shall be governed by and construed in accordance with the law of the State of New York without regard to principles of conflicts of law. This Indenture is subject to the provisions of the Trust Indenture Act that are required to be part of this Indenture and shall, to the extent applicable, be governed by such provisions.

SECTION 112 Legal Holidays.

In any case where any Interest Payment Date, Redemption Date, sinking fund payment date or Stated Maturity or Maturity of any Security shall not be a Business Day at any Place of Payment or other location contemplated hereunder, then (notwithstanding any other provision of this Indenture or of any Security or coupon other than a provision in the Securities of any series which specifically states that such provision shall apply in lieu of this Section), payment of principal, or premium, if any, or interest, if any, need not be made at such Place of Payment or other location contemplated hereunder on such date, but may be made on the next succeeding Business Day at such Place of Payment or other location contemplated hereunder with the same force and effect as if made on the Interest Payment Date or Redemption Date or sinking fund payment date, or at the Stated Maturity or Maturity; provided that no additional interest shall accrue for the period from and after such Interest Payment Date, Redemption Date, sinking fund payment date, Stated Maturity or Maturity, as the case may be.

SECTION 113 Agent for Service; Submission to Jurisdiction; Waiver of Immunities.

By the execution and delivery of this Indenture, each of the Partnership and Petro-Canada (i) acknowledges that it has irrevocably designated and appointed CT Corporation System, 111 Eighth Avenue, 13^th Floor, New York, New York 10011 ("CT Corporation") as its authorized agent upon which process may be served in any suit or proceeding arising out of or relating to the Securities or this Indenture that may be instituted in any federal or New York state court located in the Borough of Manhattan in the City of New York, New York or brought under federal or state securities laws or brought by the Trustee (whether in its individual capacity or in its capacity as Trustee hereunder), (ii) submits to the non-exclusive jurisdiction of any such court in any such suit or proceeding, and (iii) agrees that service of process upon CT Corporation and written notice of said service to the Partnership or Petro-Canada (mailed or delivered to the Partnership or Petro-Canada, as the case may be, Attention: Chief Financial Officer, at its principal office and in the manner specified in Section 105 hereof), shall be deemed in every respect effective service of process upon the Partnership and Petro-Canada in any such suit or proceeding. Each of the Partnership and Petro-Canada further agrees to take any and all action, including the execution and filing of any and all such documents and instruments, as may be necessary to continue such designation and appointment of CT Corporation in full force and effect so long as any of the Securities shall be outstanding.

To the extent that the Partnership or Petro-Canada has or hereafter may acquire any immunity from jurisdiction of any court or from any legal process (whether through service of notice, attachment prior to judgment, attachment in aid of execution, execution or otherwise) with respect to itself or its property, each of the Partnership and Petro-Canada hereby irrevocably waives such immunity in respect of its obligations under this Indenture and the Securities, to the extent permitted by law.

Each of the Partnership and Petro-Canada hereby irrevocably and unconditionally waives, to the fullest extent it may legally and effectively do so, any objection which it may now or hereafter have to the laying of venue of any suit, action or proceeding arising out of or relating to this Indenture or the Securities in any federal or state court in the State of New York, Borough of Manhattan. Each of the parties hereto hereby irrevocably waives, to the fullest extent permitted by law, the defense of an inconvenient forum to the maintenance of such action or proceeding in any such court.

SECTION 114 Conversion of Currency.

(a) The Issuer of each series of Securities under this Indenture and, if applicable, the Guarantor covenants and agrees that the following provisions shall apply to the conversion of currency with respect to the Securities of such series, any Guarantee thereof and this Indenture:

(i) If for the purposes of obtaining judgment in, or enforcing the judgment of, any court in any country, it becomes necessary to convert into any other currency (the "Judgment Currency") an amount due or contingently due under the Securities of any series and this Indenture (the "Required Currency"), then the conversion shall be made at the rate of exchange prevailing on the Business Day before the day on which a final judgment which is not appealable or is not appealed is given or the order of enforcement is made, as the case may be (unless a court shall otherwise determine).

(ii) If there is a change in the rate of exchange prevailing between the Business Day before the day on which the judgment referred to in (i) above is given or an order of enforcement is made, as the case may be (or such other date as a court shall determine), and the date of receipt of the amount due, the Issuer or the Guarantor, as the case may be, shall pay such additional (or, as the case may be, such lesser) amount, if any, as may be necessary so that the amount paid in the Judgment Currency when converted at the rate of exchange prevailing on the date of receipt will produce the amount in the Required Currency originally due.

(b) In the event of the winding-up of the Issuer or the Guarantor at any time while any amount or damages owing under the Securities, the Guarantees and this Indenture, or any judgment or order rendered in respect thereof, shall remain outstanding, the Issuer or the Guarantor, as the case may be, shall indemnify and hold the Holders of Securities and the Trustee harmless against any deficiency arising or resulting from any variation in rates of exchange between (1) the date as of which the equivalent of the amount in the Required Currency (other than under this Subsection (b)) is calculated for the purposes of such winding-up and (2) the final date for the filing of proofs of claim in such winding-up. For the purpose of this Subsection (b) the final date for the filing of proofs of claim in the winding-up of the Issuer or the Guarantor shall be the date fixed by the liquidator or otherwise in accordance with the relevant provisions of applicable law as being the latest practicable date as at which liabilities of the Issuer or the Guarantor, as the case may be, may be ascertained for such winding-up prior to payment by the liquidator or otherwise in respect thereto.

(c) The obligations contained in Subsections (a)(ii) and (b) of this Section shall constitute separate and independent obligations of the Partnership and the Guarantor from its other obligations under the Securities, the Guarantees and this Indenture, shall give rise to separate and independent causes of action against the Partnership and the Guarantor, shall apply irrespective of any waiver or extension granted by any Holder or Trustee from time to time and shall continue in full force and effect notwithstanding any judgment or order or the filing of any proof of claim in the winding-up of the Issuer or the Guarantor for a liquidated sum in respect of amounts due hereunder (other than under Subsection (b) above) or under any such judgment or order. Any such deficiency as aforesaid shall be deemed to constitute a loss suffered by the Holders or the Trustee, as the case may be, and no proof or evidence of any actual loss shall be required by the Issuer or the Guarantor, as the case may be, or the applicable liquidator. In the case of Subsection (b) above, the amount of such deficiency shall not be deemed to be reduced by any variation in rates of exchange occurring between the said final date and the date of any liquidating distribution.

(d) The term "rate(s) of exchange" shall mean the Bank of Canada noon rate for purchases on the relevant date of the Required Currency with the Judgment Currency, as reported by Telerate on screen 3194 (or such other means of reporting the Bank of Canada noon rate as may be agreed upon by each of the parties to this Indenture) and includes any premiums and costs of exchange payable.

SECTION 115 Currency Equivalent.

Except as otherwise provided in this Indenture, for purposes of the construction of the terms of this Indenture or of the Securities, in the event that any amount is stated herein in the Currency of one nation (the "First Currency"), as of any date such amount shall also be deemed to represent the amount in the Currency of any other relevant nation (the "Other Currency") which is required to purchase such amount in the First Currency at the Bank of Canada noon rate as reported by Telerate on screen 3194 (or such other means of reporting the Bank of Canada noon rate as may be agreed upon by each of the parties to this Indenture) on the date of determination.

SECTION 116 Incorporators, Shareholders, Officers and Directors of the Partnership and Petro-Canada Exempt from Individual Liability.

No recourse under or upon any obligation, covenant or agreement contained in this Indenture, or in any Security or Guarantee, or because of any indebtedness evidenced thereby, shall be had against any incorporator, as such, or against any past, present or future shareholder, officer or director, as such, of the Partnership, any of the Partners or Petro- Canada (either in its capacity as Issuer or Guarantor) or of any successor, either directly or through the Partnership or Petro-Canada or any successor, under any rule of law, statute or constitutional provision or by the enforcement of any assessment or by any legal or equitable proceeding or otherwise, all such liability being expressly waived and released by the acceptance of the Securities by the Holders as part of the consideration for the issue of the Securities.

SECTION 117 Conflict with the Trust Indenture Act.

If and to the extent that any provision hereof limits, qualifies or conflicts with the duties imposed by any of Sections 310 to 318, inclusive, of the Trust Indenture Act, through operation of Section 318(c) thereof, such imposed duties shall control.

SECTION 118 WAIVER OF JURY TRIAL.

EACH OF THE PARTNERSHIP, PETRO-CANADA AND THE TRUSTEE HEREBY IRREVOCABLY WAIVES, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY LEGAL PROCEEDING ARISING OUT OF OR RELATING TO THIS INDENTURE, THE SECURITIES OR THE TRANSACTIONS CONTEMPLATED HEREBY.

ARTICLE TWO
SECURITIES FORMS

SECTION 201 Forms Generally.

The Registered Securities, if any, of each series and the Bearer Securities, if any, of each series and related coupons shall be in substantially the forms as shall be established by or pursuant to an Authorizing Resolution or in one or more indentures supplemental hereto, in each case with such appropriate insertions, omissions, substitutions and other variations as are required or permitted by this Indenture, and may have such letters, numbers or other marks of identification and such legends or endorsements placed thereon as may be required to comply with the rules of any securities exchange or as may, consistently herewith, be determined by the officers executing such Securities or coupons, as evidenced by their execution of the Securities or coupons. If the forms of Securities or coupons of any series are established by action taken pursuant to an Authorizing Resolution, a copy of an appropriate record of such action shall be certified by the Secretary or an Assistant Secretary of the Issuer and delivered to the Trustee at or prior to the delivery of the Issuer Order contemplated by Section 303 for the authentication and delivery of such Securities or coupons. Any portion of the text of any Security may be set forth on the reverse thereof, with an appropriate reference thereto on the face of the Security.

Any Securities to be issued by the Partnership shall have endorsed thereon a Guarantee thereof by the Guarantor in accordance with Section 204.

Unless otherwise specified as contemplated by Section 301, Bearer Securities shall have interest coupons attached.

The Trustee's certificate of authentication on all Securities shall be in substantially the form set forth in this Article.

The definitive Securities, coupons and any Guarantee shall be printed, lithographed or engraved on steel engraved borders or may be produced in any other manner, all as determined by the Officers of the Issuer executing such Securities, as evidenced by their execution of such Securities or coupons.

SECTION 202 Form of Trustee's Certificate of Authentication.

Subject to Section 612, the Trustee's certificate of authentication shall be in substantially the following form:

TRUSTEE'S CERTIFICATE OF AUTHENTICATION

Dated:

This is one of the Securities of the series designated and referred to in, and issued under, the within mentioned Indenture.

		THE BANK OF NEW YORK, as Trustee
		By:	Authorized Signatory

SECTION 203 Securities Issuable in Global Form.

If Securities of or within a series are issuable in global form, as specified and contemplated by Section 301, then, notwithstanding clause (7) of Section 301 and Section 302, any such Security shall represent such of the Outstanding Securities of such series as shall be specified therein and may provide that it shall represent the aggregate amount of Outstanding Securities of such series from time to time endorsed thereon and that the aggregate amount of Outstanding Securities of such series represented thereby may from time to time be increased or decreased to reflect exchanges. Any endorsement of a Security in global form to reflect the amount, or any increase or decrease in the amount, of Outstanding Securities represented thereby shall be made by the Trustee in such manner and upon written instructions given by such Person or Persons as shall be specified therein or in the Issuer Order to be delivered to the Trustee pursuant to Section 303 or Section 304. Subject to the provisions of Section 303 and, if applicable, Section 304, the Trustee shall deliver and redeliver any Security in permanent global form in the manner and upon written instructions given by the Person or Persons specified therein or in the applicable Issuer Order. If an Issuer Order pursuant to Section 303 or Section 304 has been, or simultaneously is, delivered, any instructions by the Issuer with respect to endorsement or delivery or redelivery of a Security in global form shall be in writing but need not comply with Section 102 and need not be accompanied by an Opinion of Counsel.

The provisions of the last sentence of Section 303 shall apply to any Security represented by a Security in global form if such Security was never issued and sold by the Issuer and the Issuer delivers to the Trustee the Security in global form together with written instructions (which need not comply with Section 102 and need not be accompanied by an Opinion of Counsel) with regard to the reduction in the principal amount of Securities represented thereby, together with the written statement contemplated by the last sentence of Section 303.

Notwithstanding the provisions of Section 307, unless otherwise specified as contemplated by Section 301, payment of principal of, and premium, if any, and interest, if any, on any Security in permanent global form shall be made to the Person or Persons specified therein.

SECTION 204 Form of Guarantee.

The Guarantee to be endorsed on a Security issued by the Partnership, subject to Section 201, shall be in substantially the form set forth below:

GUARANTEE OF PETRO-CANADA

For value received, PETRO-CANADA, a corporation duly organized and existing under the laws of Canada (herein called the "Guarantor", which term includes any successor Person under the Indenture) referred to in the Security upon which this Guarantee is endorsed), hereby unconditionally and irrevocably guarantees to the Holder of the Security upon which this Guarantee is endorsed and to the Trustee on behalf of each such Holder the due and punctual payment of the principal of, premium, if any, and interest on such Security, and the due and punctual payment of the sinking fund or analogous payments referred to therein, if any, together with any Additional Amounts payable with respect thereto when and as the same shall become due and payable, whether on the Stated Maturity, by declaration of acceleration, call for redemption or otherwise, according to the terms thereof and of the Indenture referred to therein. In case of the failure of PC Financial Partnership, a general partnership duly organized and existing under the laws of Delaware (herein called "Partnership", which term includes any successor Person under such Indenture), punctually to make any such payment of principal, premium, if any, or interest or any such Additional Amount, the Guarantor hereby agrees to cause any such payment to be made punctually when and as the same shall become due and payable, whether on the Stated Maturity or by declaration of acceleration, call for redemption or otherwise, and as if such payment were made by the Partnership.

The Guarantor hereby agrees that its obligations hereunder shall be as if it were principal debtor and not merely guarantor, and shall be absolute and unconditional, irrespective of, and shall be unaffected by, any invalidity, irregularity or unenforceability of such Security or such Indenture, any failure to enforce the provisions of such Security or such Indenture, or any waiver, modification or indulgence granted to the Partnership with respect thereto, by the Holder of such Security or the Trustee or any other circumstance which may otherwise constitute a legal or equitable discharge of a guarantor; provided, however, that, notwithstanding the foregoing, no such waiver, modification or indulgence shall, without the consent of the Guarantor, increase the principal amount of such Security, or increase the interest rate thereon, or increase any premium payable upon redemption thereof, or alter the Stated Maturity thereof except as provided in the Indenture, or increase the principal amount of any Original Issue Discount Security that would be due and payable upon a declaration of acceleration or the maturity thereof pursuant to Article Five of such Indenture. The Guarantor hereby waives diligence, presentment, demand of payment, filing of claims with a court in the event of merger or bankruptcy of the Partnership, any right to require a proceeding first against the Partnership, protest or notice with respect to such Security or the indebtedness evidenced thereby or with respect to any sinking fund or analogous payment required under such Security and all demands whatsoever, and covenants that this Guarantee will not be discharged except by payment in full of the principal of, premium, if any, and interest on such Security together with any Additional Amounts.

The Guarantor shall be subrogated to all rights of the Holder of such Security and the Trustee against the Partnership in respect of any amounts paid to such Holder by the Guarantor pursuant to the provisions of this Guarantee; provided, however, that the Guarantor shall not be entitled to enforce or to receive any payments arising out of or based upon such right of subrogation until the principal of, premium, if any, and interest on all Securities of the same series issued under such Indenture shall have been paid in full.

No reference herein to such Indenture and no provision of this Guarantee or of such Indenture shall alter or impair the guarantees of the Guarantor, which are absolute and unconditional, of the due and punctual payment of the principal of, premium, if any, and interest on, and any sinking fund or analogous payments with respect to, the Security upon which this Guarantee is endorsed.

This Guarantee shall not be valid or obligatory for any purpose until the certificate of authentication of such Security shall have been manually executed by or on behalf of the Trustee under such Indenture.

All terms used in this Guarantee which are defined in such Indenture shall have the meanings assigned to them in such Indenture.

This Guarantee shall be governed by and construed in accordance with the laws of the State of New York.

Executed and dated the date on the face hereof.

		PETRO-CANADA
		By:	Name: Title:
Attest:	Name: Title:

ARTICLE THREE
THE SECURITIES

SECTION 301 Amount Unlimited; Issuable in Series.

The aggregate principal amount of Securities which may be authenticated and delivered under this Indenture is unlimited.

The Securities may be issued from time to time in one or more series. There shall be established in one or more Authorizing Resolutions or pursuant to authority granted by one or more Authorizing Resolutions and, subject to Section 303, set forth in, or determined in the manner provided in, an Officers' Certificate, or established in one or more indentures supplemental hereto, prior to the issuance of Securities of any series, the specific terms of the Securities of such series, including, but not limited to, any or all of the following, as applicable (each of which (except for the matters set forth in clauses (1), (2) and (20) below), if so provided, may be determined from time to time by the Issuer with respect to unissued Securities of such series and set forth in such Securities of such series when issued from time to time):

(1) the title and the aggregate principal amount of the Securities of the series (which shall distinguish the Securities of the series from all other series of the Securities);

(2) any limit on the aggregate principal amount of the Securities of the series that may be authenticated and delivered under this Indenture (except for Securities authenticated and delivered upon registration of transfer of, or in exchange for, or in lieu of, other Securities of the series pursuant to Section 304, 305, 306, 906, 1107 or 1305);

(3) the date or dates, or the method by which such date or dates will be determined or extended, on which the Securities of the series may be issued and on which the principal of, and premium, if any, on the Securities will be payable;

(4) the rate or rates (whether fixed or variable) at which the Securities shall bear interest, if any, or the method by which such rate or rates shall be determined, the date or dates from which such interest shall accrue, or the method by which such date or dates shall be determined, the Interest Payment Dates on which such interest shall be payable and the Regular Record Date, if any, for the interest payable on any Registered Security on any Interest Payment Date, or the method by which such date or dates will be determined, and the basis upon which interest shall be calculated if other than on the basis of a 360-day year of twelve 30-day months;

(5) the place or places, if any, other than or in addition to The Borough of Manhattan, The City of New York, where the principal of, and premium, if any, and interest, if any, on the Securities of the series shall be payable, where any Registered Securities of the series may be surrendered for registration of transfer, where Securities of the series may be surrendered for exchange, where Securities of the series that are convertible or exchangeable may be surrendered for conversion or exchange, as applicable and, if different than the location specified in Section 105, the place or places where notices or demands to or upon the Issuer or, if applicable, the Guarantor in respect of the Securities of the series, any related Guarantees and this Indenture may be served;

(6) the period or periods within which, the price or prices at which, the Currency in which, and other terms and conditions upon which Securities of the series may be redeemed or purchased, in whole or in part, at the option of the Issuer, if the Issuer is to have that option;

(7) if other than the principal amount thereof, the portion of the principal amount of Securities of the series that shall be payable upon declaration of acceleration of the Maturity thereof pursuant to Section 502 or the method by which such portion shall be determined;

(8) if the Securities of the series are to be convertible into or exchangeable for the debt securities of any Person (including the Issuer), the terms and conditions upon which such Securities will be so convertible or exchangeable;

(9) if payment of the Securities will be guaranteed by any other Person;

(10) the extent and manner, if any, in which payment on or in respect of the Securities of the series will be secured, or will rank senior, or will be subordinated to the prior payment of the other liabilities and obligations of the Issuer;

(11) if Securities of the series are to be issuable in definitive form (whether upon original issue or upon exchange of a temporary Security of such series) only upon receipt of certain certificates or other documents or satisfaction of other conditions, the form and/or terms of such certificates, documents or conditions;

(12) any applicable Canadian and U.S. federal income tax consequences;

(13) the obligation, if any, of the Issuer to redeem, repay or purchase Securities of the series pursuant to any sinking fund or analogous provision or at the option of a Holder thereof, and the period or periods within which, the price or prices at which, the Currency in which, and other terms and conditions upon which Securities of the series shall be redeemed, repaid or purchased, in whole or in part, pursuant to such obligation;

(14) if the Securities of the series are to be issued upon the exercise of warrants, the time, manner and place for such Securities to be authenticated and delivered;

(15) whether the Securities of the series are to be issuable as Registered Securities, Bearer Securities (with or without coupons) or both, any restrictions applicable to the offer, sale or delivery of Bearer Securities, whether any Securities of the series are to be issuable initially in temporary global form and whether any Securities of the series are to be issuable in permanent global form with or without coupons and, if so, whether beneficial owners of interests in any such permanent global Security may exchange such interests for Securities of such series and of like tenor of any authorized form and denomination and the circumstances under which any such exchanges may occur, if other than in the manner provided in Section 305, whether Registered Securities of the series may be exchanged for Bearer Securities of the series (if permitted by applicable laws and regulations), whether Bearer Securities of the series may be exchanged for Registered Securities of such series, and the circumstances under which and the place or places where any such exchanges may be made and, if Securities of the series are to be issuable in global form, the identity of any initial depository therefor;

(16) if other than denominations of U.S. $1,000 and any integral multiple thereof, the denomination or denominations in which any Registered Securities of the series shall be issuable and, if other than denominations of U.S. $1,000, the denomination or denominations in which any Bearer Securities of the series shall be issuable;

(17) if other than Dollars, the Currency in which payment of the principal of, or premium, if any, or interest, if any, on the Securities of the series shall be payable or in which the Securities of the series shall be denominated and the particular provisions applicable thereto in accordance with, in addition to or in lieu of any of the provisions of Section 312;

(18) whether the amount of payments of principal of, or premium, if any, or interest, if any, on the Securities of the series may be determined with reference to an index, formula or other method (which index, formula or method may be based, without limitation, on one or more Currencies, commodities, equity indices or other indices), and the manner in which such amounts shall be determined;

(19) whether, under what circumstances and the Currency in which the Issuer will pay Additional Amounts as contemplated by Section 1005 on the Securities of the series to any Holder (including modifications to the definition of such term) in respect of any tax, assessment or governmental charge and, if so, whether the Issuer will have the option to redeem such Securities rather than pay such Additional Amounts (and the terms of any such option);

(20) any deletions from, modifications of or additions to the Events of Default or covenants (including any deletions from, modifications of or additions to Section 1010) of the Issuer or the Guarantor with respect to Securities of the series, whether or not such Events of Default or covenants are consistent with the Events of Default or covenants set forth herein;

(21) whether the principal of, or premium, if any, or interest, if any, on the Securities of the series are to be payable, at the election of the Issuer or a Holder thereof, in a Currency other than that in which such Securities are denominated or stated to be payable, the period or periods within which (including the Election Date), and the terms and conditions upon which, such election may be made, and the time and manner of determining the exchange rate between the Currency in which such Securities are denominated or stated to be payable and the Currency in which such Securities are to be so payable, in each case in accordance with, in addition to or in lieu of any of the provisions of Section 312;

(22) the applicability, if any, of Sections 1402 and/or 1403 to the Securities of the series and the related Guarantees and any provisions in modification of, in addition to or in lieu of any of the provisions of Article Fourteen that shall be applicable to the Securities of the series;

(23) the date as of which any Bearer Securities of the series and any temporary global Security representing Outstanding Securities of the series shall be dated if other than the date of original issuance of the first Security of the series to be issued;

(24) the Person to whom any interest on any Registered Security of the series shall be payable, if other than the Person in whose name that Security (or one or more Predecessor Securities) is registered at the close of business on the Regular Record Date for such interest, the manner in which, or the Person to whom, any interest on any Bearer Security of the series shall be payable, if otherwise than upon presentation and surrender of the coupons appertaining thereto as they severally mature, and the extent to which, or in the manner in which, any interest payable on a temporary global Security on an Interest Payment Date will be paid if other than in the manner provided in Section 304;

(25) provisions, if any, granting special rights to the Holders of Securities of the series upon the occurrences of such events as may be specified;

(26) if other than The Depository Trust Company, the Person designated as the Depositary for the Securities of such series;

(27) other than the Trustee, the identity of each Security Registrar and/or Paying Agent;

(28) the designation of the initial Exchange Rate Agent, if any;

(29) the percentage or percentages of principal amount at which the Securities of the series will be issued;

(30) the application, if any, of Section 1009 or 1108 to the Securities of that series and the related Guarantees; and

(31) any other terms, conditions, rights and preferences (or limitations on such rights and preferences) relating to the series (which terms shall not be inconsistent with the requirements of the Trust Indenture Act or the provisions of this Indenture).

All Securities of any one series and the coupons appertaining to any Bearer Securities of such series shall be substantially identical except, in the case of Registered Securities, as to denomination and except as may otherwise be provided in or pursuant to an Authorizing Resolution (subject to Section 303) and set forth in such Officers' Certificate or in any such indenture supplemental hereto. The applicable Issuer may, from time to time, without notice or consent of the Holders, create and issue additional Securities of a series so that such additional Securities may be consolidated and form a single series with the Securities of the same series initially issued by such Issuer and shall have the same terms as to status, redemption and otherwise as the Securities of the same series originally issued.

If any of the terms of the series are established by action taken pursuant to one or more Authorizing Resolutions, such Authorizing Resolutions shall be delivered to the Trustee at or prior to the delivery of the Officers' Certificate or supplemental indenture, as the case may be, setting forth the terms of the series.

SECTION 302 Denominations.

The Securities of each series shall be issuable in such denominations as shall be specified as contemplated by Section 301. With respect to Securities of any series denominated in Dollars, in the absence of any such provisions, the Registered Securities of such series, other than Registered Securities issued in global form (which may be of any denomination), shall be issuable in denominations of $1,000 and any integral multiple thereof and the Bearer Securities of such series, other than the Bearer Securities issued in global form (which may be of any denomination), shall be issuable in a denomination of $1,000.

SECTION 303 Execution, Authentication, Delivery and Dating.

The Securities and any coupons appertaining thereto shall be executed on behalf of the Issuer by the Chairman, President, Chief Executive Officer, Chief Financial Officer or a Vice-President of the Issuer together with any one of the Controller, the Secretary, an Assistant Secretary or the Treasurer of the Issuer; provided that where the Issuer is the Partnership, the Securities and any coupons appertaining thereto may be signed on behalf of the Partnership by the Managing Partner, in which case the Officers signing on behalf of the Managing Partner shall be the Chairman, President, Chief Executive Officer, Chief Financial Officer or a Vice-President of the Managing Partner together with any one of the Controller, the Secretary, an Assistant Secretary or the Treasurer of the Managing Partner. The signature of any of these officers on the Securities or coupons may be the manual or facsimile signatures of the present or any future such authorized officer and may be imprinted or otherwise reproduced on the Securities.

Securities or coupons bearing the manual or facsimile signatures of individuals who were at any time the proper officers of the applicable Issuer (or Managing Partner, if applicable) shall bind the Partnership or Petro-Canada (either as Issuer or Guarantor), as the case may be, notwithstanding that such individuals or any of them have ceased to hold such offices prior to the authentication and delivery of such Securities or coupons or did not hold such offices at the date of such Securities or coupons.

At any time and from time to time after the execution and delivery of this Indenture, either the Partnership or Petro-Canada as Issuer may deliver Securities of any series including any coupon appertaining thereto, executed by the Issuer, together (in the case of Securities to be issued by the Partnership) with the Guarantee thereof endorsed thereon and executed by the Guarantor, to the Trustee for authentication, together with an Issuer Order for the authentication and delivery of such Securities, and the Trustee in accordance with such Issuer Order shall authenticate and deliver such Securities; provided, however, that, in connection with its original issuance, no Bearer Security shall be mailed or otherwise delivered to any location in the United States; and provided further, that, unless otherwise specified with respect to any series of Securities pursuant to Section 301, a Bearer Security may be delivered in connection with its original issuance only if the Person entitled to receive such Bearer Security shall have furnished a certificate in the form set forth in Exhibit A-1 to this Indenture, dated no earlier than 15 days prior to the earlier of the date on which such Bearer Security is delivered and the date on which any temporary Security first becomes exchangeable for such Bearer Security in accordance with the terms of such temporary Security and this Indenture. If any Security shall be represented by a permanent global Bearer Security, then, for purposes of this Section and Section 304, the notation of a Depositary participant's interest therein upon original issuance of such Security or upon exchange of a portion of a temporary global Security shall be deemed to be delivery in connection with its original issuance of such Depositary participant's interest in such permanent global Security. Except as permitted by Section 306, the Trustee shall not authenticate and deliver any Bearer Security unless all appurtenant coupons for interest then matured have been detached and cancelled. If not all the Securities of any series are to be issued at one time and if the Authorizing Resolution and Officer's Certificate or supplemental indenture establishing such series shall so permit, such Issuer Order may set forth procedures acceptable to the Trustee for the issuance of such Securities and determining terms of particular Securities of such series.

In authenticating such Securities, and accepting the additional responsibilities under this Indenture in relation to such Securities, the Trustee shall be entitled to receive, and (subject to Sections 315(a) through 315(d) of the Trust Indenture Act) shall be fully protected in relying upon, an Opinion of Counsel stating:

(a) that the form or forms of such Securities, any coupons and any related Guarantees have been established in conformity with the provisions of this Indenture;

(b) that the terms of such Securities, any coupons and any related Guarantees have been established in conformity with the provisions of this Indenture;

(c) that such Securities, together with any coupons appertaining thereto, and any related Guarantees when completed by appropriate insertions and executed by the Issuer and, if applicable, by the Guarantor and delivered to the Trustee for authentication in accordance with this Indenture, authenticated and delivered by the Trustee in accordance with this Indenture and issued by the Issuer and, if applicable, the Guarantor, in the manner and subject to any conditions specified in such Opinion of Counsel, will constitute the legal, valid and binding obligations of the Issuer and, if applicable, the Guarantor, enforceable in accordance with their terms, subject to applicable bankruptcy, insolvency, reorganization and other similar laws of general applicability relating to or affecting the enforcement of creditors' rights, to general equitable principles and to such other qualifications as such counsel shall conclude do not materially affect the rights of Holders of such Securities, any coupons and the related Guarantees;

(d) that all laws and requirements in respect of the execution and delivery by the Issuer and, if applicable, the Guarantor, of such Securities, any coupons, any related Guarantees and of the supplemental indentures, if any, have been complied with and that authentication and delivery of such Securities, any coupons, the related Guarantees and the execution and delivery of the supplemental indenture, if any, by the Trustee will not violate the terms of this Indenture;

(e) that the Partnership or Petro-Canada, as the case may be, has the power to issue such Securities and any coupons and, if applicable, that Petro-Canada has the power to provide the related Guarantees, and that each has duly taken all necessary action with respect to the authorization, execution and delivery of such issuance and any such Guarantee; and

(f) that the issuance of such Securities, any coupons and any related Guarantees will not contravene the partnership agreement of the Partnership or articles of incorporation or amalgamation or by-laws of Petro-Canada, as the case may be, or result in any violation of any of the terms or provisions of any law or regulation or of any indenture, mortgage or other agreement known to such Counsel by which the Partnership or Petro-Canada is bound.

Notwithstanding the provisions of Section 301 and of the preceding two paragraphs, if not all the Securities of any series are to be issued at one time, it shall not be necessary to deliver the Officers' Certificate otherwise required pursuant to Section 301 or the Issuer Order and Opinion of Counsel otherwise required pursuant to the preceding two paragraphs prior to or at the time of issuance of each Security, but such documents shall be delivered prior to or at the time of issuance of the first Security of such series.

The Trustee shall not be required to authenticate and deliver any such Securities if the issue of such Securities pursuant to this Indenture will affect the Trustee's own rights, duties or immunities under the Securities and this Indenture or otherwise in a manner which is not reasonably acceptable to the Trustee.

Each Registered Security shall be dated the date of its authentication and each Bearer Security shall be dated as of the date specified as contemplated by Section 301.

No Security or coupon shall be entitled to any benefit under this Indenture or to the benefit of any Guarantee, and no Security or any attached coupon or related Guarantee shall be valid or obligatory for any purpose, unless there appears on such Security a certificate of authentication substantially in the form provided for herein duly executed by the Trustee by manual signature of an authorized signatory, and such certificate upon any Security shall be conclusive evidence, and the only evidence, that such Security has been duly authenticated and delivered hereunder and is entitled to the benefits of this Indenture and of any related Guarantee endorsed thereon. Notwithstanding the foregoing, if any Security shall have been authenticated and delivered hereunder but never issued and sold by the Issuer, and the Issuer shall deliver such Security to the Trustee for cancellation as provided in Section 310 together with a written statement (which need not comply with Section 102 and need not be accompanied by an Opinion of Counsel) stating that such Security has never been issued and sold by the Issuer, then for all purposes of this Indenture such Security shall be deemed never to have been authenticated and delivered hereunder and shall never entitle a Holder to the benefits of this Indenture or any Guarantee.

SECTION 304 Temporary Securities.

Pending the preparation of definitive Securities of any series, the Issuer and, if applicable, the Guarantor may execute, and upon Issuer Order the Trustee shall authenticate and deliver, temporary Securities (with Guarantees endorsed thereon, if applicable) which are printed, lithographed, typewritten, mimeographed or otherwise produced, in any authorized denomination, substantially of the tenor of the definitive Securities in lieu of which they are issued, in registered form or, if authorized, in bearer form with one or more coupons or without coupons, and with such appropriate insertions, omissions, substitutions and other variations as conclusively the officers executing such Securities may determine, as conclusively evidenced by their execution of such Securities. Such temporary Securities may be in global form.

Except in the case of temporary Securities in global form (which shall be exchanged in accordance with the provisions of the following paragraphs), if temporary Securities of any series are issued, the Issuer will cause definitive Securities of that series to be prepared without unreasonable delay. After the preparation of definitive Securities of such series, the temporary Securities of such series shall be exchangeable for definitive Securities of such series upon surrender of the temporary Securities of such series at the office or agency of the Issuer in a Place of Payment for that series, without charge to the Holder. Upon surrender for cancellation of any one or more temporary Securities of any series (accompanied by any unmatured coupons appertaining thereto), the Issuer and, if applicable, the Guarantor shall execute and the Trustee shall authenticate and deliver in exchange therefor a like principal amount of definitive Securities of the same series of authorized denominations; provided, however, that no definitive Bearer Security shall be delivered in exchange for a temporary Registered Security; and provided further, that a definitive Bearer Security shall be delivered in exchange for a temporary Bearer Security only in compliance with the conditions set forth in Section 303. Until so exchanged the temporary Securities of any series shall in all respects be entitled to the same benefits under this Indenture as definitive Securities of such series.

If temporary Securities of any series are issued in global form, any such temporary global Security shall, unless otherwise provided therein, be delivered to the London, England office of a depositary or common depositary (the "Common Depositary") or the Depositary, as applicable, for the benefit of Euroclear and Clearstream, for credit to the respective accounts of the beneficial owners of such Securities (or to such other accounts as they may direct).

Without unnecessary delay but in any event not later than the date specified in, or determined pursuant to the terms of, any such temporary global Security (the "Exchange Date"), the Issuer shall deliver to the Trustee definitive Securities, in aggregate principal amount equal to the principal amount of such temporary global Security, executed by the Issuer and, if applicable, having endorsed thereon a Guarantee executed by the Guarantor. On or after the Exchange Date such temporary global Security shall be surrendered by the Common Depositary to the Trustee, as the agent of the Issuer, for such purpose, to be exchanged, in whole or from time to time in part, for definitive Securities without charge and the Trustee shall authenticate and deliver, in exchange for each portion of such temporary global Security, an equal aggregate principal amount of definitive Securities of the same series of authorized denominations and of like tenor as the portion of such temporary global Security to be exchanged. The definitive Securities to be delivered in exchange for any such temporary global Security shall be in bearer form, registered form, permanent global bearer form or permanent global registered form, or any combination thereof, as specified as contemplated by Section 301, and, if any combination thereof is so specified, as requested in writing by the Depositary participant having a beneficial interest therein thereof; provided, however, that, unless otherwise specified in such temporary global Security, upon such presentation by the Common Depositary, such temporary global Security is accompanied by a certificate dated the Exchange Date or a subsequent date and signed by Euroclear as to the portion of such temporary global Security held for its account then to be exchanged and a certificate dated the Exchange Date or a subsequent date and signed by Clearstream as to the portion of such temporary global Security held for its account then to be exchanged, each in the form set forth in Exhibit A-2 to this Indenture (or in such other form as may be established pursuant to Section 301); and provided further, that definitive Bearer Securities shall be delivered in exchange for a portion of a temporary global Security only in compliance with the requirements of Section 303.

Unless otherwise specified in such temporary global Security, the interest of a beneficial owner of Securities of a series in a temporary global Security shall be exchanged for definitive Securities of the same series and of like tenor following the Exchange Date when the Euroclear or Clearstream participant instructs Euroclear or Clearstream, as the case may be, to request such exchange on his behalf and delivers to Euroclear or Clearstream, as the case may be, a certificate in the form set forth in Exhibit A-1 to this Indenture (or in such other form as may be established pursuant to Section 301), dated no earlier than 15 days prior to the Exchange Date, copies of which certificate shall be available from the offices of Euroclear and Clearstream, the Trustee, any Authenticating Agent appointed for such series of Securities and each Paying Agent. Unless otherwise specified in such temporary global Security, any such exchange shall be made free of charge to the beneficial owners of such temporary global Security, except that a Person receiving definitive Securities must bear the cost of insurance, postage, transportation and the like in the event that such Person does not take delivery of such definitive Securities in person at the offices of Euroclear or Clearstream. Definitive Securities in bearer form to be delivered in exchange for any portion of a temporary global Security shall be delivered only outside the United States.

Until exchanged in full as hereinabove provided, the temporary Securities of any series shall in all respects be entitled to the same benefits under this Indenture as definitive Securities of the same series and of like tenor authenticated and delivered hereunder, except that, unless otherwise specified as contemplated by Section 301, interest payable on a temporary global Security on an Interest Payment Date for Securities of such series occurring prior to the applicable Exchange Date shall be payable to Euroclear and Clearstream on such Interest Payment Date upon delivery by Euroclear and Clearstream to the Trustee of a certificate or certificates in the form set forth in Exhibit A-2 to this Indenture (or in such other form as may be established pursuant to Section 301), for credit without further interest thereon on or after such Interest Payment Date to the respective accounts of the Persons who are the beneficial owners of such temporary global Security on such Interest Payment Date and who have each delivered to Euroclear or Clearstream, as the case may be, a certificate dated no earlier than 15 days prior to the Interest Payment Date occurring prior to such Exchange Date in the form set forth in Exhibit A-1 to this Indenture (or in such other form as may be established pursuant to Section 301). Notwithstanding anything to the contrary herein contained, the certifications made pursuant to this paragraph shall satisfy the certification requirements of the preceding two paragraphs of this Section and of the third paragraph of Section 303 of this Indenture and the interests of the Persons who are the beneficial owners of the temporary global Security with respect to which such certification was made will be exchanged for definitive Securities of the same series and of like principal amount and tenor on the Exchange Date or the date of certification if such date occurs after the Exchange Date, without further act or deed by such beneficial owners. Except as otherwise provided in this paragraph, no payments of principal, or premium, if any, or interest, if any, owing with respect to a beneficial interest in a temporary global Security will be made unless and until such interest in such temporary global Security shall have been exchanged for an interest in a definitive Security. Any interest so received by Euroclear and Clearstream and not paid as herein provided shall be returned to the Trustee immediately prior to the expiration of two years after such Interest Payment Date in order to be repaid to the Issuer, in accordance with Section 1003.

SECTION 305 Registration, Registration of Transfer and Exchange.

The Issuer shall cause to be kept at the Corporate Trust Office of the Trustee a register for each series of Securities (the registers maintained in the Corporate Trust Office of the Trustee and in any other office or agency of the Issuer in a Place of Payment being herein sometimes collectively referred to as the "Security Register") in which, subject to such reasonable regulations as it may prescribe, the Issuer shall provide for the registration of Registered Securities and of transfers of Registered Securities. The Security Register shall be in written form or any other form capable of being converted into written form within a reasonable time. At all reasonable times, the Security Register shall be open to inspection by the Trustee. The Trustee is hereby initially appointed as security registrar (the "Security Registrar") for the purpose of registering Registered Securities and transfers of Registered Securities as herein provided. The Issuer shall have the right to remove and replace from time to time the Security Registrar for any series of Securities; provided, that, no such removal or replacement shall be effective until a successor Security Registrar with respect to such series of Registered Securities shall have been appointed by the Issuer and shall have accepted such appointment by the Issuer. In the event that the Trustee shall not be or shall cease to be the Security Registrar with respect to a series of Securities, it shall have the right to examine the Security Register for such series at all reasonable times. There shall be only one Security Register for such series of Securities.

Upon surrender for registration of transfer of any Registered Security of any series at the office or agency in a Place of Payment for that series, the Issuer shall execute, and the Trustee shall authenticate and deliver, in the name of the designated transferee, one or more new Registered Securities of the same series, of any authorized denominations and of a like aggregate principal amount and tenor and, if applicable, having endorsed thereon a Guarantee executed by the Guarantor.

At the option of the Holder, Registered Securities of any series may be exchanged for other Registered Securities of the same series, of any authorized denomination and of a like aggregate principal amount and tenor, upon surrender of the Registered Securities to be exchanged at such office or agency. Whenever any Registered Securities are so surrendered for exchange, the Issuer shall execute, and the Trustee shall authenticate and deliver, the Registered Securities which the Holder making the exchange is entitled to receive and, if applicable, the Guarantor shall execute the Guarantee endorsed thereon. Unless otherwise specified with respect to any series of Securities as contemplated by Section 301, Bearer Securities may not be issued in exchange for Registered Securities.

If, but only if, expressly permitted in or pursuant to the applicable Authorizing Resolution and, subject to Section 303, set forth in the applicable Officers' Certificate, or in any indenture supplemental hereto, delivered as contemplated by Section 301, at the option of the Holder, Bearer Securities of any series may be exchanged for Registered Securities of the same series of any authorized denomination and of a like aggregate principal amount and tenor, upon surrender of the Bearer Securities to be exchanged at any such office or agency, with all unmatured coupons and all matured coupons in default thereto appertaining. If the Holder of a Bearer Security is unable to produce any such unmatured coupon or coupons or matured coupon or coupons in default, any such permitted exchange may be effected if the Bearer Securities are accompanied by payment in funds acceptable to the Issuer in an amount equal to the face amount of such missing coupon or coupons, or the surrender of such missing coupon or coupons may be waived by the Issuer and the Trustee if there is furnished to them such security or indemnity as they may require to save each of them and any Paying Agent harmless. If thereafter the Holder of such Security shall surrender to any Paying Agent any such missing coupon in respect of which such a payment shall have been made, such Holder shall be entitled to receive the amount of such payment; provided, however, that, except as otherwise provided in Section 1002, interest represented by coupons shall be payable only upon presentation and surrender of those coupons at an office or agency located outside the United States. Notwithstanding the foregoing, in case a Bearer Security of any series is surrendered at any such office or agency in a permitted exchange for a Registered Security of the same series and like tenor after the close of business at such office or agency on (i) any Regular Record Date and before the opening of business at such office or agency on the relevant Interest Payment Date, or (ii) any Special Record Date and before the opening of business at such office or agency on the related proposed date for payment of Defaulted Interest, such Bearer Security shall be surrendered without the coupon relating to such Interest Payment Date or proposed date for payment, as the case may be, and interest or Defaulted Interest, as the case may be, will not be payable on such Interest Payment Date or proposed date for payment, as the case may be, in respect of the Registered Security issued in exchange for such Bearer Security, but will be payable only to the Holder of such coupon when due in accordance with the provisions of this Indenture.

Whenever any Securities are so surrendered for exchange, the Issuer shall execute, and the Trustee shall authenticate and deliver, the Securities which the Holder making the exchange is entitled to receive and the Guarantor shall execute the Guarantees endorsed thereon, if applicable.

Notwithstanding the foregoing, except as otherwise specified as contemplated by Section 301, any permanent global Security shall be exchangeable only as provided in this paragraph. If any beneficial owner of an interest in a permanent global Security is entitled to exchange such interest for Securities of such series and of like tenor and principal amount of another authorized form and denomination, as specified as contemplated by Section 301 and provided that any applicable notice provided in the permanent global Security shall have been given, then without unnecessary delay but in any event not later than the earliest date on which such interest may be so exchanged, the Issuer shall deliver to the Trustee definitive Securities in aggregate principal amount equal to the principal amount of such beneficial owner's interest in such permanent global Security, executed by the Issuer and, if applicable, having a Guarantee executed by the Guarantor endorsed thereon. On or after the earliest date on which such interests may be so exchanged, such permanent global Security shall be surrendered by the Common Depositary or such other Depositary as shall be specified in the Issuer Order with respect thereto to the Trustee, as the agent of the Issuer for such purpose, to be exchanged, in whole or from time to time in part, for definitive Securities without charge, and the Trustee shall authenticate and deliver, in exchange for each portion of such permanent global Security, an equal aggregate principal amount of definitive Securities of the same series of authorized denominations and of like tenor as the portion of such permanent global Security to be exchanged which, unless the Securities of the series are not issuable both as Bearer Securities and as Registered Securities, as specified as contemplated by Section 301, shall be in the form of Bearer Securities or Registered Securities, or any combination thereof, as shall be specified in writing by the Depositary participant having a beneficial interest therein thereof; provided, however, that no such exchanges may occur during a period beginning at the opening of business 15 days before any selection of Securities to be redeemed and ending on the relevant Redemption Date if the Security for which exchange is requested may be among those selected for redemption; and provided further, that no Bearer Security delivered in exchange for a portion of a permanent global Security shall be mailed or otherwise delivered to any location in the United States. If a Registered Security is issued in exchange for any portion of a permanent global Security after the close of business at the office or agency where such exchange occurs on (i) any Regular Record Date and before the opening of business at such office or agency on the relevant Interest Payment Date, or (ii) any Special Record Date and before the opening of business at such office or agency on the related proposed date for payment of Defaulted Interest, interest or Defaulted Interest, as the case may be, will not be payable on such Interest Payment Date or proposed date for payment, as the case may be, in respect of such Registered Security, but will be payable on such Interest Payment Date or proposed date for payment, as the case may be, only to the Person to whom interest in respect of such portion of such permanent global Security is payable in accordance with the provisions of this Indenture.

If at any time the Depositary for Securities of a series notifies the Issuer that it is unwilling, unable or no longer qualifies to continue as Depositary for Securities of such series or if at any time the Depositary for Securities for such series shall no longer be registered or in good standing under the Exchange Act, or other applicable statute or regulation, the Issuer shall appoint a successor Depositary with respect to the Securities for such series. If (i) a successor to the Depositary for Securities is not appointed by the Issuer within 90 days after the Issuer receives such notice or becomes aware of such condition, as the case may be, or (ii) an Event of Default under Section 501 has occurred and is continuing with respect to the Securities of such series, then the election of the Issuer pursuant to Section 301 shall no longer be effective with respect to the Securities for such series and the Issuer will execute, and the Trustee, upon receipt of an Issuer Order for the authentication and delivery of definitive Securities of such series, will authenticate and deliver Securities of such series in definitive registered form, in authorized denominations, and in an aggregate principal amount equal to the principal amount of the global Security or Securities representing such series (having endorsed thereon a Guarantee by the Guarantor, if applicable) in exchange for such global Security or Securities.

Upon the exchange of a global Security for Securities in definitive registered form, such global Security shall be cancelled by the Trustee. Securities issued in exchange for a global Security pursuant to this Section shall be registered in such names and in such authorized denominations as the Depositary for such global Security, pursuant to instructions from its direct or indirect participants or otherwise, shall instruct the Trustee in writing. The Trustee shall deliver such Securities to the Persons in whose names such Securities are so registered.

All Securities issued upon any registration of transfer or exchange of Securities and any Guarantees thereof shall be the valid obligations of the Issuer and, if applicable, of the Guarantor, respectively, evidencing the same debt and the same Guarantee, and entitled to the same benefits under this Indenture, as the Securities and Guarantees surrendered upon such registration of transfer or exchange.

Every Registered Security presented or surrendered for registration of transfer or for exchange shall (if so required by the Issuer or the Security Registrar) be duly endorsed, or be accompanied by a written instrument of transfer, in form satisfactory to the Issuer and the Security Registrar, duly executed by the Holder thereof or his attorney duly authorized in writing.

No service charge shall be made for any registration of transfer or exchange of Securities, but the Issuer may require payment of a sum sufficient to cover any tax or other governmental charge that may be imposed in connection with any registration of transfer or exchange of Securities, other than exchanges pursuant to Section 304, 906, 1107 or 1305 not involving any transfer.

The Issuer shall not be required (i) to issue, register the transfer of or exchange Securities of any series during a period beginning at the opening of business 15 days before the day of the selection for redemption of Securities of that series under Section 1103 or 1203 and ending at the close of business on (a) if Securities of the series are issuable only as Registered Securities, the day of the mailing of the relevant notice of redemption and (b) if Securities of the series are issuable as Bearer Securities, the day of the first publication of the relevant notice of redemption or, if Securities of the series are also issuable as Registered Securities and there is no publication, the mailing of the relevant notice of redemption, or (ii) to register the transfer of or exchange any Registered Security so selected for redemption in whole or in part, except the unredeemed portion of any Security being redeemed in part, or (iii) to exchange any Bearer Security so selected for redemption except that such a Bearer Security may be exchanged for a Registered Security of that series and like tenor; provided that such Registered Security shall be immediately surrendered for redemption on the Redemption Date, or (iv) to issue, register the transfer of or exchange any Security which has been surrendered for repayment at the option of the Holder, except the portion, if any, of such Security not to be so repaid.

SECTION 306 Mutilated, Destroyed, Lost and Stolen Securities.

If any mutilated Security or a Security with a mutilated coupon appertaining to it is surrendered to the Trustee, the Issuer shall execute and the Trustee shall authenticate and deliver in exchange therefor a new Security of the same series and of like tenor and principal amount and bearing a number not contemporaneously outstanding, with coupons corresponding to the coupons, if any, appertaining to the surrendered Security, and, if applicable, having endorsed thereon a Guarantee executed by the Guarantor or, in case any such mutilated Security or coupon has become or is about to become due and payable, the Issuer may, instead of issuing a new Security with coupons corresponding to the coupons, if any, appertaining to the surrendered Security, pay such Security or coupon.

If there shall be delivered to the Issuer and to the Trustee (i) evidence to their satisfaction of the destruction, loss or theft of any Security or coupon and (ii) such security or indemnity as may be required by them to save each of them and any agent of either of them harmless, then, in the absence of notice to the Issuer or the Guarantor, if applicable, or the Trustee that such Security or coupon has been acquired by a protected purchaser (as defined in Article 8 of the UCC), the Issuer shall execute and upon Issuer Order the Trustee shall authenticate and deliver, in lieu of any such destroyed, lost or stolen Security or in exchange for the Security for which a destroyed, lost or stolen coupon appertains (with all appurtenant coupons not destroyed, lost or stolen), a new Security of the same series and of like tenor and principal amount and bearing a number not contemporaneously outstanding, with coupons corresponding to the coupons, if any, appertaining to such destroyed, lost or stolen Security or to the Security to which such destroyed, lost or stolen coupon appertains.

Notwithstanding the provisions of the previous two paragraphs, in case any such mutilated, destroyed, lost or stolen Security or coupon has become or is about to become due and payable, the Issuer may, instead of issuing a new Security, with coupons corresponding to the coupons, if any, appertaining to such mutilated, destroyed, lost or stolen Security or to the Security to which such mutilated, destroyed, lost or stolen coupon appertains, pay such Security or coupon; provided, however, that payment of principal of, and premium, if any, and interest, if any, on Bearer Securities shall, except as otherwise provided in Section 1002, be payable only at an office or agency located outside the United States and, unless otherwise specified as contemplated by Section 301, any interest on Bearer Securities shall be payable only upon presentation and surrender of the coupons appertaining thereto.

Upon the issuance of any new Security under this Section, the Issuer may require the payment of a sum sufficient to cover any tax or other governmental charge that may be imposed in relation thereto and any other expenses (including the fees and expenses of the Trustee) connected therewith.

Every new Security of any series with its coupons, if any, and any Guarantee endorsed thereon, issued pursuant to this Section in lieu of any mutilated, destroyed, lost or stolen Security or in exchange for a Security to which a mutilated, destroyed, lost or stolen coupon appertains or to which a Guarantee relates, shall constitute an original additional contractual obligation of the Issuer or the Guarantor, as the case may be, whether or not the mutilated, destroyed, lost or stolen Security and its coupons, if any, or the mutilated, destroyed, lost or stolen coupon shall be at any time enforceable by anyone, and the Holders of such Security shall be entitled to all the benefits of this Indenture and of any applicable Guarantee equally and proportionately with any and all other Securities of that series and their coupons, if any, duly issued hereunder.

The provisions of this Section, as amended or supplemented pursuant to this Indenture with respect to particular Securities or generally, are exclusive and shall preclude (to the extent lawful) all other rights and remedies with respect to the replacement or payment of mutilated, destroyed, lost or stolen Securities or coupons.

SECTION 307 Payment of Principal and Interest; Interest Rights Preserved; Optional Interest Reset.

(a) Unless otherwise provided as contemplated by Section 301 with respect to any series of Securities, interest, if any, on any Registered Security which is payable, and is punctually paid or duly provided for, on any Interest Payment Date shall be paid to the Person in whose name such Security (or one or more Predecessor Securities) is registered at the close of business on the Regular Record Date for such interest at the office or agency of the Issuer maintained for such purpose pursuant to Section 1002; provided, however, that each installment of the principal of, and premium, if any, on, and interest, if any, on any Registered Security may at the option of the Issuer be paid by (i) mailing or delivering a check for such interest, payable to or upon the written order of the Person entitled thereto pursuant to Section 309, to the address of such Person as it appears on the Security Register or (ii) wire transfer to an account of the Person entitled to receive such payment located in the United States in the case of a Holder of at least $1,000,000 or more in aggregate principal amount of the Securities of such series (with wire transfer instructions provided in writing to the Trustee not less than 15 days prior to payment of interest by wire transfer); provided further, that principal paid in relation to any Security redeemed at the option of the Issuer pursuant to Article Eleven, or paid at Maturity, shall be paid to the Holder of such Security only upon presentation and surrender of such Security to such office or agency referred to in this Section 307(a).

Unless otherwise provided as contemplated by Section 301 with respect to the Securities of any series, payment of interest, if any, may be made, in the case of a Bearer Security upon the presentation and surrender of any applicable coupon, or if no coupon, then the Bearer Security by check or in the case of a Holder of at least $1,000,000 in aggregate principal amount of the Securities of such series, by wire transfer to an account located outside the United States maintained by the payee (with wire transfer instructions provided to the Trustee in writing not less than 15 days prior to the payment to be made).

Unless otherwise provided as contemplated by Section 301, every permanent global Security will provide that interest, if any, payable on any Interest Payment Date will be paid to each of Euroclear and Clearstream with respect to that portion of such permanent global Security held for its account by the Common Depositary, for the purpose of permitting each of Euroclear and Clearstream to credit the interest, if any, received by it in respect of such permanent global Security to the accounts of the beneficial owners thereof.

Any interest on any Registered Security of any series which is payable, but is not punctually paid or duly provided for, on any Interest Payment Date shall forthwith cease to be payable to the Holder on the relevant Regular Record Date by virtue of having been such Holder, and such defaulted interest and, if applicable, interest on such defaulted interest (to the extent lawful) at the rate specified in the Securities of such series (such defaulted interest and, if applicable, interest thereon herein collectively called "Defaulted Interest") may be paid by the Issuer (or, if applicable, by the Guarantor) as provided in clause (1) or (2) below:

(1) The Issuer or the Guarantor, as the case may be, may elect to make payment of any Defaulted Interest to the Persons in whose names the Registered Securities of such series (or their respective Predecessor Securities) are registered at the close of business on a Special Record Date for the payment of such Defaulted Interest, which shall be fixed in the following manner. The Issuer or the Guarantor, as the case may be, shall notify the Trustee in writing of the amount of Defaulted Interest proposed to be paid on each Registered Security of such series and the date of the proposed payment, and at the same time the Issuer or the Guarantor, as the case may be, shall deposit with the Trustee an amount of money in the Currency in which the Securities of such series are payable (except as otherwise specified pursuant to Section 301 for the Securities of such series and except, if applicable, as provided in Sections 312(b), 312(d) and 312(e)) equal to the aggregate amount proposed to be paid in respect of such Defaulted Interest or shall make arrangements satisfactory to the Trustee for such deposit on or prior to the date of the proposed payment, such money when deposited to be held in trust for the benefit of the Persons entitled to such Defaulted Interest as in this clause provided. Thereupon the Trustee shall fix a Special Record Date for the payment of such Defaulted Interest which shall be not more than 15 days and not less than 10 days prior to the date of the proposed payment and not less than 10 days after the receipt by the Trustee of the notice of the proposed payment. The Trustee shall promptly notify the Issuer or the Guarantor, as the case may be, of such Special Record Date and, in the name and at the expense of the Issuer or the Guarantor, as the case may be, shall cause notice of the proposed payment of such Defaulted Interest and the Special Record Date therefor to be given in the manner provided in Section 106, not less than 10 days prior to such Special Record Date. Notice of the proposed payment of such Defaulted Interest and the Special Record Date therefor having been so given, such Defaulted Interest shall be paid to the Persons in whose name the Registered Securities of such series (or their respective Predecessor Securities) are registered at the close of business on such Special Record Date and shall no longer be payable pursuant to the following clause (2).

(2) The Issuer or the Guarantor, as the case may be, may make payment of any Defaulted Interest on the Registered Securities of any series in any other lawful manner not inconsistent with the requirements of any securities exchange on which such Securities may be listed, and upon such notice as may be required by such exchange, if, after notice given by the Issuer or the Guarantor, as the case may be, to the Trustee of the proposed payment pursuant to this clause, such manner of payment shall be deemed practicable by the Trustee.

(b) The provisions of this Section 307(b) may be made applicable to any series of Securities pursuant to Section 301 (with such modifications, additions or substitutions as may be specified pursuant to such Section 301). The interest rate (or the spread or spread multiplier used to calculate such interest rate, if applicable) on any Security of such series may be reset by the Issuer on the date or dates specified on the face of such Security (each an "Optional Reset Date"). The Issuer may exercise such option with respect to such Security by notifying the Trustee in writing of such exercise at least 50 but not more than 60 days prior to an Optional Reset Date for such Security. Not later than 40 days prior to each Optional Reset Date, the Trustee shall transmit, in the manner provided for in Section 106, to the Holder of any such Security a notice (the "Reset Notice") indicating whether the Issuer has elected to reset the interest rate (or the spread or spread multiplier used to calculate such interest rate, if applicable), and if so (i) such new interest rate (or such new spread or spread multiplier, if applicable) and (ii) the provisions, if any, for redemption during the period from such Optional Reset Date to the next Optional Reset Date or if there is no such next Optional Reset Date, to the Stated Maturity Date of such Security (each such period a "Subsequent Interest Period"), including the date or dates on which or the period or periods during which and the price or prices at which such redemption may occur during the Subsequent Interest Period.

Notwithstanding the foregoing, not later than 20 days prior to the Optional Reset Date, the Issuer may, at its option, revoke the interest rate (or the spread or spread multiplier used to calculate such interest rate, if applicable) provided for in the Reset Notice and establish an interest rate (or a spread or spread multiplier used to calculate such interest rate, if applicable) that is higher than the interest rate (or the spread or spread multiplier, if applicable) provided for in the Reset Notice, for the Subsequent Interest Period by causing the Trustee to transmit, in the manner provided for in Section 106, notice of such higher interest rate (or such higher spread or spread multiplier, if applicable) to the Holder of such Security. Such notice shall be irrevocable. All Securities with respect to which the interest rate (or the spread or spread multiplier used to calculate such interest rate, if applicable) is reset on an Optional Reset Date, and with respect to which the Holders of such Securities have not tendered such Securities for repayment (or have validly revoked any such tender) pursuant to the next succeeding paragraph, will bear such higher interest rate (or such higher spread or spread multiplier, if applicable).

The Holder of any such Security will have the option to elect repayment by the Issuer of the principal of such Security on each Optional Reset Date at a price equal to the principal amount thereof plus interest accrued to such Optional Reset Date. In order to obtain repayment on an Optional Reset Date, the Holder must follow the procedures set forth in Article Thirteen for repayment at the option of the Holders except that the period for delivery or notification to the Trustee shall be at least 25 but not more than 35 days prior to such Optional Reset Date and except that, if the Holder has tendered any Security for repayment pursuant to the Reset Notice, the Holder may, by written notice to the Trustee, revoke such tender or repayment until the close of business on the tenth day before such Optional Reset Date.

Subject to the foregoing provisions of this Section and Section 305, each Security delivered under this Indenture upon registration of transfer of or in exchange for or in lieu of any other Security shall carry the rights to interest accrued and unpaid, and to accrue, which were carried by such other Security.

SECTION 308 Optional Extension of Stated Maturity.

The provisions of this Section 308 may be made applicable to any series of Securities pursuant to Section 301 (with such modifications, additions or substitutions as may be specified pursuant to such Section 301). The Stated Maturity of any Security of such series may be extended at the option of the Issuer for the period or periods specified on the face of such Security (each an "Extension Period") up to but not beyond the date (the "Final Maturity") set forth on the face of such Security. The Issuer may exercise such option with respect to any Security by notifying the Trustee of such exercise at least 50 but not more than 60 days prior to the Stated Maturity of such Security in effect prior to the exercise of such option (the "Original Stated Maturity"). If the Issuer exercises such option, the Trustee shall transmit, in the manner provided for in Section 106, to the Holder of such Security not later than 40 days prior to the Original Stated Maturity a notice (the "Extension Notice") indicating (i) the election of the Issuer to extend the Stated Maturity, (ii) the new Stated Maturity, (iii) the interest rate, if any, applicable to the Extension Period and (iv) the provisions, if any, for redemption during such Extension Period. Upon the Trustee's transmittal of the Extension Notice, the Stated Maturity of such Security shall be extended automatically and, except as modified by the Extension Notice and as described in the next paragraph, such Security will have the same terms as prior to the transmittal of such Extension Notice.

Notwithstanding the foregoing, not later than 20 days before the Original Stated Maturity of such Security, the Issuer may, at its option, revoke the interest rate provided for in the Extension Notice and establish a higher interest rate for the Extension Period by causing the Trustee to transmit, in the manner provided for in Section 106, notice of such higher interest rate to the Holder of such Security. Such notice shall be irrevocable. All Securities with respect to which the Stated Maturity is extended will bear such higher interest rate.

If the Issuer extends the Maturity of any Security, the Holder will have the option to elect repayment of such Security by the Issuer on the Original Stated Maturity at a price equal to the principal amount thereof, plus interest accrued to such date. In order to obtain repayment on the Original Stated Maturity once the Issuer has extended the Maturity thereof, the Holder must follow the procedures set forth in Article Thirteen for repayment at the option of Holders, except that the period for delivery or notification to the Trustee shall be at least 25 but not more than 35 days prior to the Original Stated Maturity and except that, if the Holder has tendered any Security for repayment pursuant to an Extension Notice, the Holder may by written notice to the Trustee revoke such tender for repayment until the close of business on the tenth day before the Original Stated Maturity.

SECTION 309 Persons Deemed Owners.

Prior to due presentment of a Registered Security for registration of transfer, the Issuer, the Guarantor (if applicable) and the Trustee, and any agent of the Issuer, the Guarantor (if applicable) or the Trustee, may treat the Person in whose name such Registered Security is registered as the owner of such Registered Security for the purpose of receiving payment of principal of, and premium, if any, and (subject to Sections 305 and 307) interest, if any, on such Security and for all other purposes whatsoever (except for determining whether the payment of Additional Amounts is required), whether or not such Security be overdue, and none of the Issuer, the Guarantor, the Trustee or any agent of the Issuer, the Guarantor or the Trustee shall be affected by notice to the contrary.

Title to any Bearer Security and any coupons appertaining thereto shall pass by delivery. The Issuer, the Guarantor (if applicable), the Trustee and any agent of the Issuer, the Guarantor (if applicable) or the Trustee may treat the bearer of any Bearer Security and the bearer of any coupon as the absolute owner of such Security or coupon for the purpose of receiving payment thereof or on account thereof and for all other purposes whatsoever, whether or not such Security or coupons be overdue, and none of the Issuer, the Guarantor, the Trustee or any agent of the Issuer, the Guarantor or the Trustee shall be affected by notice to the contrary.

The Depositary for Securities may be treated by the Issuer, the Guarantor (if applicable) or the Trustee, and any agent of the Issuer or the Guarantor (if applicable) or the Trustee as the owner of such global Security for all purposes whatsoever (except for determining whether the payment of Additional Amounts is required). None of the Issuer, the Guarantor, the Trustee, any Paying Agent or the Security Registrar will have any responsibility or liability for any aspect of the records relating to or payments made on account of beneficial ownership of a Security in global form or for maintaining, supervising or reviewing any records relating to such beneficial ownership interests.

Notwithstanding anything to the contrary in this Indenture, the Depositary or its nominee, as Holder of a global Security, may grant proxies and otherwise authorize any Person (including owners of beneficial interests in the Securities) to take any action that the Depositary or its nominee, as Holder of a global Security, is entitled to take under this Indenture or the Securities, provided further that, with respect to any global Security, nothing herein shall prevent the Issuer, the Guarantor (if applicable), the Trustee, or any agent of the Issuer, the Guarantor (if applicable) or the Trustee, from giving effect to any written certification, proxy or other authorization furnished by any depositary, as a Holder, with respect to such global Security or impair, as between such depositary and owners of beneficial interests in such global Security, the operation of customary practices governing the exercise of the rights of such depositary (or its nominee) as Holder of such global Security.

SECTION 310 Cancellation.

All Securities and coupons surrendered for payment, redemption, repayment at the option of the Holder, registration of transfer or exchange or for credit against any current or future sinking fund payment shall, if surrendered to any Person other than the Trustee, be delivered to the Trustee. All Securities and coupons so delivered to the Trustee shall be promptly cancelled by it. The Issuer may at any time deliver to the Trustee for cancellation any Securities previously authenticated and delivered hereunder which the Issuer may have acquired in any manner whatsoever, and may deliver to the Trustee (or to any other Person for delivery to the Trustee) for cancellation any Securities previously authenticated hereunder which the Issuer has not issued and sold, and all Securities so delivered shall be promptly cancelled by the Trustee. If the Issuer shall so acquire any of the Securities, however, such acquisition shall not operate as a redemption or satisfaction of the indebtedness represented by such Securities unless and until the same are surrendered to the Trustee for cancellation. No Securities shall be authenticated in lieu of or in exchange for any Securities cancelled as provided in this Section, except as expressly permitted by this Indenture. All cancelled Securities held by the Trustee shall be disposed of by the Trustee in accordance with its customary procedures and certification of their disposal delivered to the Issuer and, if applicable, the Guarantor unless by Issuer Order the Issuer shall direct that cancelled Securities be returned to it.

SECTION 311 Computation of Interest.

Except as otherwise specified as contemplated by Section 301 with respect to any Securities, interest, if any, on the Securities shall be computed on the basis of a 360-day year of twelve 30-day months. Solely for the purposes of the Interest Act (Canada), the yearly rate of interest to which interest calculated under a Security for a period of less than one year on the basis of a year of 360 days consisting of twelve 30-day periods (the "calculation period") is equivalent is such rate of interest multiplied by a fraction of which (i) the numerator is the product of (a) the actual number of days in the year commencing on the first day of such period, multiplied by (b) the sum of (y) the product of 30 multiplied by the number of complete months elapsed in such period and (z) the actual number of days elapsed in any incomplete month in such period; and (ii) the denominator is the product of (a) 360 multiplied by (b) the actual number of days in such period.

SECTION 312 Currency and Manner of Payments in Respect of Securities.

(a) With respect to Registered Securities of any series not permitting the election provided for in paragraph (b) below or the Holders of which have not made the election provided for in paragraph (b) below, and with respect to Bearer Securities of any series, except as provided in paragraph (d) below, payment of the principal of, and premium, if any, and interest, if any, on any Registered Security or Bearer Security of such series will be made in the Currency in which such Registered Security or Bearer Security, as the case may be, is payable. The provisions of this Section 312 may be modified or superseded with respect to any Securities pursuant to Section 301.

(b) It may be provided pursuant to Section 301 with respect to Registered Securities of any series that Holders shall have the option, subject to paragraphs (d) and (e) below, to receive payments of principal of, or premium, if any, or interest, if any, on such Registered Securities in any of the Currencies which may be designated for such election by delivering to the Trustee a written election with signature guarantees and in the applicable form established pursuant to Section 301, not later than the close of business on the Election Date immediately preceding the applicable payment date. If a Holder so elects to receive such payments in any such Currency, such election will remain in effect for such Holder or any transferee of such Holder until changed by such Holder or such transferee by written notice to the Trustee (but any such change must be made not later than the close of business on the Election Date immediately preceding the next payment date to be effective for the payment to be made on such payment date and no such change of election may be made with respect to payments to be made on any Registered Security of such series with respect to which an Event of Default has occurred or with respect to which the Issuer or the Guarantor has deposited funds pursuant to Article Four or Article Fourteen or with respect to which a notice of redemption has been given by the Issuer or a notice of option to elect repayment has been sent by such Holder or such transferee). Any Holder of any such Registered Security who shall not have delivered any such election to the Trustee not later than the close of business on the applicable Election Date will be paid the amount due on the applicable payment date in the relevant Currency as provided in Section 312(a). The Trustee shall notify the Exchange Rate Agent as soon as practicable after the Election Date of the aggregate principal amount of Registered Securities for which Holders have made such written election.

(c) Unless otherwise specified pursuant to Section 301, if the election referred to in paragraph (b) above has been provided for pursuant to Section 301, then, unless otherwise specified pursuant to Section 301, not later than the fourth Business Day after the Election Date for each payment date for Registered Securities of any series, the Exchange Rate Agent will deliver to the Issuer a written notice specifying, in the Currency in which Registered Securities of such series are payable, the respective aggregate amounts of principal of, and premium, if any, and interest, if any, on the Registered Securities to be paid on such payment date, specifying the amounts in such Currency so payable in respect of the Registered Securities as to which the Holders of Registered Securities of such series shall have elected to be paid in another Currency as provided in paragraph (b) above. If the election referred to in paragraph (b) above has been provided for pursuant to Section 301 and if at least one Holder has made such election, then, unless otherwise specified pursuant to Section 301, on the second Business Day preceding such payment date the Issuer will deliver to the Trustee for such series of Registered Securities an Exchange Rate Officer's Certificate in respect of the Dollar or Foreign Currency payments to be made on such payment date. Unless otherwise specified pursuant to Section 301, the Dollar or Foreign Currency amount receivable by Holders of Registered Securities who have elected payment in a Currency as provided in paragraph (b) above shall be determined by the Issuer on the basis of the applicable Market Exchange Rate in effect on the third Business Day (the "Valuation Date") immediately preceding each payment date, and such determination shall be conclusive and binding for all purposes, absent manifest error.

(d) If a Conversion Event occurs with respect to a Foreign Currency in which any of the Securities are denominated or payable other than pursuant to an election provided for pursuant to paragraph (b) above, then with respect to each date for the payment of principal of, and premium, if any, and interest, if any, on the applicable Securities denominated or payable in such Foreign Currency occurring after the last date on which such Foreign Currency was used (the "Conversion Date"), the Dollar shall be the Currency of payment for use on each such payment date. Unless otherwise specified pursuant to Section 301, the Dollar amount to be paid by the Issuer to the Trustee and by the Trustee or any Paying Agent to the Holders of such Securities with respect to such payment date shall be the Dollar Equivalent of the Foreign Currency as determined by the Exchange Rate Agent in the manner provided in paragraph (f) below.

(e) Unless otherwise specified pursuant to Section 301, if the Holder of a Registered Security denominated in any Currency shall have elected to be paid in another Currency as provided in paragraph (b) above, and a Conversion Event occurs with respect to such elected Currency, such Holder shall receive payment in the Currency in which payment would have been made in the absence of such election; and if a Conversion Event occurs with respect to the Currency in which payment would have been made in the absence of such election, such Holder shall receive payment in Dollars as provided in paragraph (d) above.

(f) The "Dollar Equivalent of the Foreign Currency" shall be determined by the Exchange Rate Agent and shall be obtained for each subsequent payment date by converting the specified Foreign Currency into Dollars at the Market Exchange Rate on the Conversion Date.

For purposes of this Section 312, "Election Date" shall mean the date for any series of Registered Securities as specified pursuant to clause (21) of Section 301 by which the written election referred to in paragraph (b) above may be made.

All decisions and determinations of the Exchange Rate Agent regarding the Dollar Equivalent of the Foreign Currency and the Market Exchange Rate as specified above shall be in its sole discretion and shall, in the absence of manifest error, be conclusive for all purposes and irrevocably binding upon the Issuer, the Guarantor (if applicable), the Trustee and all Holders of such Securities denominated or payable in the relevant Currency. The Exchange Rate Agent shall promptly give written notice to the Issuer and the Trustee of any such decision or determination.

In the event that the Issuer determines in good faith that a Conversion Event has occurred with respect to a Foreign Currency, the Issuer will immediately give written notice thereof to the Trustee and to the Exchange Rate Agent (and the Trustee will promptly thereafter give notice in the manner provided for in Section 106 to the affected Holders) specifying the Conversion Date.

The Trustee shall be fully justified and protected in relying and acting upon information received by it from the Issuer and the Exchange Rate Agent and shall not otherwise have any duty or obligation to determine the accuracy or validity of such information independent of the Issuer or the Exchange Rate Agent.

SECTION 313 Appointment and Resignation of Successor Exchange Rate Agent.

(a) Unless otherwise specified pursuant to Section 301, if and so long as the Securities of any series (i) are denominated in a Foreign Currency or (ii) may be payable in a Foreign Currency, or so long as it is required under any other provision of this Indenture, then the Issuer will maintain with respect to each such series of Securities, or as so required, at least one Exchange Rate Agent. The Issuer will cause the Exchange Rate Agent to make the necessary foreign exchange determinations at the time and in the manner specified pursuant to Section 301 for the purpose of determining the applicable rate of exchange and, if applicable, for the purpose of converting the issued Currency into the applicable payment Currency for the payment of principal, and premium, if any, and interest, if any, pursuant to Section 312.

(b) The Issuer shall have the right to remove and replace from time to time the Exchange Rate Agent for any series of Securities. No resignation of the Exchange Rate Agent and no appointment of a successor Exchange Rate Agent pursuant to this Section shall become effective until the acceptance of appointment by the successor Exchange Rate Agent as evidenced by a written instrument delivered to the Issuer and the Trustee.

(c) If the Exchange Rate Agent shall resign, be removed or become incapable of acting, or if a vacancy shall occur in the office of the Exchange Rate Agent for any cause with respect to the Securities of one or more series, the Issuer, by or pursuant to an Authorizing Resolution, shall promptly appoint a successor Exchange Rate Agent or Exchange Rate Agents with respect to the Securities of that or those series (it being understood that any such successor Exchange Rate Agent may be appointed with respect to the Securities of one or more or all of such series and that, unless otherwise specified pursuant to Section 301, at any time there shall only be one Exchange Rate Agent with respect to the Securities of any particular series that are originally issued by the same Issuer on the same date and that are initially denominated and/or payable in the same Currency).

ARTICLE FOUR
SATISFACTION AND DISCHARGE

SECTION 401 Satisfaction and Discharge of Indenture.

This Indenture shall upon an Issuer Request cease to be of further effect with respect to any series of Securities specified in such Issuer Request (except as to any surviving rights of registration of transfer or exchange of Securities of such series expressly provided for herein or pursuant hereto and any right to receive Additional Amounts as contemplated by Section 1005) and the Trustee, at the expense of the Issuer, shall execute proper instruments acknowledging satisfaction and discharge of this Indenture as to such series when:

(1)

either

(A)

all Securities of such series theretofore authenticated and delivered and all coupons, if any, appertaining thereto (other than (i) coupons appertaining to Bearer Securities surrendered for exchange for Registered Securities and maturing after such exchange, whose surrender is not required or has been waived as provided in Section 305, (ii) Securities and coupons of such series which have been destroyed, lost or stolen and which have been replaced or paid as provided in Section 306, (iii) coupons appertaining to Securities called for redemption and maturing after the relevant Redemption Date, whose surrender has been waived as provided in Section 1106, and (iv) Securities and coupons of such series for whose payment money has theretofore been deposited in trust with the Trustee or any Paying Agent or segregated and held in trust by the Issuer or the Guarantor, as the case may be, and thereafter repaid to the Issuer or the Guarantor, as the case may be, as provided in Section 1003) have been delivered to the Trustee for cancellation; or

(B)

all Securities of such series and, in the case of (i) or (ii) below, any coupons appertaining thereto not theretofore delivered to the Trustee for cancellation

(i): have become due and payable; or
(ii): will become due and payable at their Stated Maturity within one year; or

(iii) if redeemable at the option of the Issuer are to be called for redemption within one year under arrangements satisfactory to the Trustee for the giving of notice of redemption by the Trustee in the name, and at the expense, of the Issuer;

and the Issuer, in the case of (i), (ii) or (iii) above, has irrevocably deposited or caused to be deposited with the Trustee as trust funds in trust for such purpose an amount in the Currency in which the Securities of such series are payable, sufficient to pay and discharge the entire indebtedness on such Securities not theretofore delivered to the Trustee for cancellation, for principal, and premium, if any, and interest, if any, to the date of such deposit (in the case of Securities which have become due and payable) or to the Stated Maturity or Redemption Date, as the case may be;

(2) the Issuer has paid or caused to be paid all other sums payable hereunder in respect of such series; and

(3) the Issuer has delivered to the Trustee an Officers' Certificate and an Opinion of Counsel, each stating that all conditions precedent herein provided for relating to the satisfaction and discharge of this Indenture as to such series have been complied with.

Notwithstanding the satisfaction and discharge of this Indenture, the obligations of the Partnership and Petro-Canada to the Trustee under Section 607, the obligations of the Trustee to any Authenticating Agent under Section 612 and, if money shall have been deposited with the Trustee pursuant to subclause (B) of clause (1) of this Section, the obligations of the Trustee under Section 402 and the last paragraph of Section 1003 shall survive.

SECTION 402 Application of Trust Money.

Subject to the provisions of the last paragraph of Section 1003, all money deposited with the Trustee pursuant to Section 401 shall be held in trust and applied by it, in accordance with the provisions of the Securities, the coupons and this Indenture, to the payment, either directly or through any Paying Agent (including the Issuer acting as its own Paying Agent) as the Trustee may determine, to the Persons entitled thereto, of the principal, and premium, if any, and interest, if any, for whose payment such money has been deposited with the Trustee; but such money need not be segregated from other funds except to the extent required by law.

ARTICLE FIVE
REMEDIES

SECTION 501 Events of Default.

"Event of Default" wherever used herein with respect to Securities of any series, means any one of the following events (whatever the reason for such Event of Default and whether it shall be voluntary or involuntary or be effected by operation of law or pursuant to any judgment, decree or order of any court or any order, rule or regulation of any administrative or governmental body), unless such event is specifically deleted or modified in or pursuant to a supplemental indenture, Authorizing Resolution or Officers' Certificate establishing the terms of such series pursuant to Section 301 of this Indenture:

(1) default in the payment of the principal of, or premium, if any, on, any Security when it becomes due and payable; or

(2) default in the payment of any interest on any Security of that series, or any related coupon, when such interest or coupon becomes due and payable, and continuance of such default for a period of 30 days; or

(3) default by the Issuer of the Securities of such series (or, in the case of any series of Securities issued by the Partnership, default by the Guarantor) in observing or performing any of the covenants contained in Sections 801, 802 or 803 of this Indenture and continuance of such default for a period of 15 days; or

(4) default in the performance, or breach, of any applicable covenant or warranty of the Issuer of the Securities of such series (or, in the case of any series of Securities issued by the Partnership, default by the Guarantor) contained in this Indenture and applicable to such series (other than a covenant or warranty a default in the performance of which, or the breach of which, is specifically dealt with in paragraphs (1), (2) and (3) above), and continuance of such default or breach for a period of 90 days after the receipt by the Issuer of written notice specifying such default or breach and requiring it to be remedied, and stating that such notice is a "Notice of Default" hereunder (i) to the Issuer (attention: Corporate Secretary, via facsimile, with a hard copy then sent, by registered or certified mail) by the Trustee or (ii) to the Issuer (in the same manner) and the Trustee by the Holders of at least 25% in principal amount of all Outstanding Securities of any series affected thereby; or

(5) default in the performance of any covenant of Petro-Canada or any Restricted Subsidiary or, so long any Securities issued by the Partnership are Outstanding, the Partnership contained in any instrument (other than this Indenture) under which Debt (other than Non-Recourse Debt) is created or issued if such Debt has an outstanding principal amount in excess of the greater of U.S.$75 million and 2% of Shareholders' Equity at the time of default and the holders of such Debt, or a trustee, if any, for those holders, declare such Debt to be due and payable prior to the stated maturity of such Debt, and such acceleration shall not be rescinded or annulled, or such default shall not be remedied or cured, whether by payment or otherwise, or waived by the holders of such accelerated Debt within a period of seven days after such Debt has been accelerated (or, if such acceleration is the result of an event of default which is not related to the failure to pay principal or interest, within 30 days after such Debt has been accelerated); or

(6) the entry of a decree or order by a court having jurisdiction in the premises adjudging Petro-Canada, any Significant Subsidiary or, so long any Securities issued by the Partnership are Outstanding, the Partnership a bankrupt or insolvent, or approving as properly filed a petition seeking reorganization, arrangement, adjustment or composition of or in respect of Petro-Canada, any Significant Subsidiary or, so long any Securities issued by the Partnership are Outstanding, the Partnership under the Bankruptcy and Insolvency Act (Canada), the Companies' Creditors Arrangement Act (Canada) or any other applicable insolvency law, or appointing a receiver, liquidator, assignee, trustee, sequestrator (or other similar official) of Petro-Canada, any Significant Subsidiary or, so long any Securities issued by the Partnership are Outstanding, the Partnership or of any substantial part of the property of Petro-Canada, any Significant Subsidiary or, so long any Securities issued by the Partnership are Outstanding, the Partnership, or ordering the winding up or liquidation of the affairs of Petro-Canada, any Significant Subsidiary or, so long any Securities issued by the Partnership are Outstanding, the Partnership, and the continuance of any such decree or order unstayed and in effect for a period of 90 consecutive days; provided that the appointment by or on behalf of a lender or holder of Non-Recourse Debt of a receiver, liquidator, assignee, trustee, sequestrator (or other similar official) in respect of the property to which such lender or holder is entitled to have recourse pursuant to the terms of such Non-Recourse Debt shall not be an event constituting an "Event of Default"; or

(7) the institution by Petro-Canada, any Significant Subsidiary or, so long any Securities issued by the Partnership are Outstanding, the Partnership of proceedings to be adjudicated a bankrupt or insolvent, or the consent by Petro-Canada, any Significant Subsidiary or, so long any Securities issued by the Partnership are Outstanding, the Partnership to the institution of bankruptcy or insolvency proceedings against Petro-Canada, any Significant Subsidiary or, so long any Securities issued by the Partnership are Outstanding, the Partnership, or the filing by Petro-Canada, any Significant Subsidiary or, so long any Securities issued by the Partnership are Outstanding, the Partnership of a petition or answer or consent seeking reorganization or relief under the Bankruptcy and Insolvency Act (Canada), the Companies' Creditors Arrangement Act (Canada) or any other applicable insolvency law, or the consent by Petro-Canada, any Significant Subsidiary or, so long any Securities issued by the Partnership are Outstanding, the Partnership to the filing of any such petition or to the appointment of a receiver, liquidator, assignee, trustee, sequestrator (or other similar official) of Petro-Canada, any Significant Subsidiary or, so long any Securities issued by the Partnership are Outstanding, the Partnership or of any substantial part of the property of Petro-Canada, any Significant Subsidiary or, so long any Securities issued by the Partnership are Outstanding, the Partnership, or the making by Petro-Canada, any Significant Subsidiary or, so long any Securities issued by the Partnership are Outstanding, the Partnership of an assignment for the benefit of creditors, or the admission by Petro-Canada, any Significant Subsidiary or, so long any Securities issued by the Partnership are Outstanding, the Partnership in writing of its inability to pay its debts generally as they become due; provided that the appointment by or on behalf of a lender or holder of Non-Recourse Debt of a receiver, liquidator, assignee, trustee, sequestrator (or other similar official) in respect of the property to which such lender or holder is entitled to have recourse pursuant to the terms of such Non-Recourse Debt shall not be an event constituting an "Event of Default"; or

(8) any other Event of Default provided with respect to Securities of that series in or pursuant to a supplemental indenture, Authorizing Resolution or Officers' Certificate establishing the terms of such series pursuant to Section 301 of this Indenture.

SECTION 502 Acceleration of Maturity; Rescission and Annulment.

If an Event of Default described in Section 501 with respect to Securities of any series at the time Outstanding occurs and is continuing, unless the principal of, and premium, if any, on, all of the Securities of such series shall have already become due and payable, then in every such case the Trustee may, in its discretion, and shall upon request in writing made by the Holders of not less than 25% in aggregate principal amount of the Outstanding Securities of all affected series, subject to any subordination provisions thereof, declare the principal amount of, and premium, if any, on, (or, if the Securities of that series are Original Issue Discount Securities or Indexed Securities, such portion of the principal amount as may be specified in the terms of that series) all of the Securities of that series and the interest accrued thereon and all other money, if any, owing under the provisions of this Indenture in respect of such Securities to be due and payable immediately, by a notice in writing to the Issuer (and to the Trustee if given by Holders), and upon any such declaration such principal amount (or specified portion thereof) shall become immediately due and payable.

At any time after such a declaration of acceleration with respect to Securities of any series (or of all affected series, as the case may be) has been made, but before a judgment or decree for payment of the money due has been obtained by the Trustee as hereinafter provided in this Article, the Holders of a majority in principal amount of the Outstanding Securities of that series (or of all affected series, as the case may be), by written notice to the Issuer and the Trustee, may rescind and annul such declaration and its consequences if:

(1) the Issuer or the Guarantor, as the case may be, has paid or deposited with the Trustee a sum sufficient to pay in the Currency in which the Securities of such series are payable (except as otherwise specified pursuant to Section 301 for the Securities of such series and except, if applicable, as provided in Sections 312(b), 312(d) and 312(e)):

(A): all overdue interest, if any, on all Outstanding Securities of that series (or of all series, as the case may be) and any related coupons;

(B): all unpaid principal of, and premium, if any, on, any Outstanding Securities of that series (or of all series, as the case may be) which has become due otherwise than by such declaration of acceleration, and interest on such unpaid principal, and premium, if any, at the rate or rates prescribed therefor in such Securities;
(C): to the extent that payment of such interest is lawful, interest on overdue interest, if any, at the rate or rates prescribed therefor in such Securities; and
(D): all sums paid or advanced by the Trustee hereunder and the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel; and

(2) all Events of Default with respect to Securities of that series (or of all affected series, as the case may be), other than the non-payment of amounts of principal of, or premium, if any, on, or interest on Securities of that series (or of all series, as the case may be) which have become due solely by such declaration of acceleration, have been cured or waived as provided in Section 513.

No such rescission shall affect any subsequent default or impair any right consequent thereon.

Notwithstanding the preceding paragraph, in the event of a declaration of acceleration in respect of the Securities of any series because an Event of Default specified in Section 501(5) shall have occurred and be continuing, such declaration of acceleration shall be automatically annulled if the indebtedness that is the subject of such Event of Default has been discharged or the holders thereof have rescinded their declaration of acceleration in respect of such indebtedness, and written notice of such discharge or rescission, as the case may be, shall have been given to the Trustee by the Issuer and countersigned by the holders of such indebtedness or a trustee, fiduciary or agent for such holders, within 30 days after such declaration of acceleration in respect of the Securities, and no other Event of Default has occurred during such 30 day period which has not been cured or waived during such period.

SECTION 503 Collection of Debt and Suits for Enforcement by Trustee.

Each of the Partnership and Petro-Canada (as Issuer and Guarantor) covenants that if:

(1) default is made in the payment of any installment of interest on any Security and any related coupon when such interest becomes due and payable and such default continues for a period of 30 days; or

(2) default is made in the payment of the principal of, or premium, if any, on, any Security at the Maturity thereof;

then the Issuer or, in the case of any Security issued by the Partnership, the Guarantor will, upon demand of the Trustee, pay to the Trustee for the benefit of the Holders of such Securities and coupons, the whole amount then due and payable on such Securities and coupons for principal, and premium, if any, and interest, if any, and interest on any overdue principal, and premium, if any, and on any overdue interest, at the rate or rates prescribed therefor in such Securities, and, in addition thereto, such further amounts as shall be sufficient to cover the costs and expenses of collection, including the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel.

If the Issuer or the Guarantor fails to pay such amounts forthwith upon such demand, the Trustee, in its own name as trustee of an express trust, may institute a judicial proceeding for the collection of the sums so due and unpaid, may prosecute such proceeding to judgment or final decree and may enforce the same against the Issuer or the Guarantor or any other obligor upon such Securities and collect the moneys adjudged or decreed to be payable in the manner provided by law out of the property of the Issuer or the Guarantor or any other obligor upon such Securities, wherever situated.

If an Event of Default with respect to Securities of any series (or of all series, as the case may be) occurs and is continuing, the Trustee may in its discretion proceed to protect and enforce its rights and the rights of the Holders of Securities of such series (or of all series, as the case may be) by such appropriate judicial proceedings as the Trustee shall deem most effectual to protect and enforce any such rights, whether for the specific enforcement of any covenant or agreement in this Indenture or in aid of the exercise of any power granted herein, or to enforce any other proper remedy.

SECTION 504 Trustee May File Proofs of Claim.

In case of the pendency of any receivership, insolvency, liquidation, bankruptcy, reorganization, arrangement, adjustment, composition or other judicial proceeding relative to the Issuer, the Guarantor or any other obligor upon the Securities or the property of the Issuer, the Guarantor or the property of such other obligor or their creditors, the Trustee (irrespective of whether the principal of the Securities shall then be due and payable as therein expressed or by declaration or otherwise and irrespective of whether the Trustee shall have made any demand on the Issuer or the Guarantor for the payment of overdue principal, premium, if any, or interest) shall be entitled and empowered, by intervention in such proceeding or otherwise,

(1) to file and prove a claim for the whole amount of principal, and premium, if any, or such portion of the principal amount of any series of Original Issue Discount Securities or Indexed Securities as may be specified in the terms of such series, and interest, if any, owing and unpaid in respect of the Securities or the Guarantees and to file such other papers or documents as may be necessary or advisable in order to have the claims of the Trustee (including any claim for the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel) and of the Holders allowed in such judicial proceeding; and

(2) to collect and receive any moneys or other property payable or deliverable on any such claims and to distribute the same;

and any custodian, receiver, assignee, trustee, liquidator, sequestrator or other similar official in any such judicial proceeding is hereby authorized by each Holder to make such payments to the Trustee and, in the event that the Trustee shall consent to the making of such payments directly to the Holders, to pay to the Trustee any amount due to it for the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel, and any other amounts due the Trustee under Section 607.

Nothing herein contained shall be deemed to authorize the Trustee to authorize or consent to or accept or adopt on behalf of any Holder any plan of reorganization, arrangement, adjustment or composition affecting the Securities or the rights of any Holder thereof or to authorize the Trustee to vote in respect of the claim of any Holder in any such proceeding.

SECTION 505 Trustee May Enforce Claims Without Possession of Securities.

All rights of action and claims under this Indenture or the Securities, coupons or Guarantees of any series may be prosecuted and enforced by the Trustee without the possession of any of the Securities, coupons or Guarantees or the production thereof in any proceeding relating thereto, and any such proceeding instituted by the Trustee shall be brought in its own name as trustee of an express trust, and any recovery of judgment shall, after provision for the payment of the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel, be for the rateable benefit of the Holders of the Securities and coupons in respect of which such judgment has been recovered.

SECTION 506 Application of Money Collected.

Any money collected by the Trustee pursuant to this Article shall be applied in the following order, at the date or dates fixed by the Trustee and, in case of the distribution of such money on account of principal, or premium, if any, or interest, if any, upon presentation of the Securities, coupons, or the Guarantees of such series, as the case may be, and the notation thereon of the payment if only partially paid and upon surrender thereof if fully paid:

First: To the payment of all amounts due the Trustee under Section 607;

Second: To the payment of the amounts then due and unpaid for principal of, and premium, if any, and interest, if any, on the Securities, coupons or Guarantees of such series in respect of which or for the benefit of which such money has been collected, rateably, without preference or priority of any kind, according to the amounts due and payable on such Securities, coupons and Guarantees for principal, and premium, if any, and interest, if any, respectively; and

Third: The balance, if any, to the Issuer or the Guarantor, as applicable, or to such Person or Persons as the Issuer or the Guarantor, as applicable, directs.

SECTION 507 Limitation on Suits.

No Holder of any Security of any series or any related coupons shall have any right to institute any proceeding, judicial or otherwise, with respect to this Indenture, the Securities of any series, or for the appointment of a receiver or trustee, or for any other remedy hereunder, unless:

(1) such Holder has previously given written notice to the Trustee of a continuing Event of Default with respect to the Securities of that series affected by such Event of Default;

(2) the Holders of not less than 25% in aggregate principal amount of the Outstanding Securities of those series (voting as one class) affected by such Event of Default described in Section 501, shall have made written request to the Trustee to institute proceedings in respect of such Event of Default in its own name as Trustee hereunder;

(3) such Holder or Holders have offered to the Trustee reasonable indemnity against the costs, expenses and liabilities to be incurred in compliance with such request;

(4) the Trustee for 60 days after its receipt of such notice, request and offer of indemnity has failed to institute any such proceeding; and

(5) no direction inconsistent with such written request has been given to the Trustee during such 60 day period by the Holders of a majority or more in principal amount of the Outstanding Securities of those series in the case of any Event of Default described in Section 501;

it being understood and intended that no one or more of such Holders shall have any right in any manner whatever by virtue of, or by availing of, any provision of this Indenture to affect, disturb or prejudice the rights of any other Holders of Securities of the same series, in the case of any Event of Default described in Section 501, or to obtain or to seek to obtain priority or preference over any other of such Holders or to enforce any right under this Indenture, except in the manner herein provided and for the equal and rateable benefit of all Holders of Securities of the same series, in the case of any Event of Default described in Section 501.

SECTION 508 Unconditional Right of Holders to Receive Principal, Premium, if any, and Interest, if any.

Notwithstanding any other provision in this Indenture, the Holder of any Security shall have the right, which is absolute and unconditional, to receive payment, as provided herein (including, if applicable, Article Fourteen) and in such Security and the Guarantee endorsed thereon, of the principal of, and premium, if any, and (subject to Section 307) interest, if any, on, such Security or payment of such coupon on the respective Stated Maturities expressed in such Security or coupon (or, in the case of redemption, on the Redemption Date) and to institute suit for the enforcement of any such payment, and such rights shall not be impaired without the consent of such Holder.

SECTION 509 Restoration of Rights and Remedies.

If the Trustee or any Holder has instituted any proceeding to enforce any right or remedy under this Indenture and such proceeding has been discontinued or abandoned for any reason, or has been determined adversely to the Trustee or to such Holder, then and in every such case, subject to any determination in such proceeding, the Partnership, Petro-Canada (both as Issuer and Guarantor, as applicable), the Trustee and the Holders of Securities and coupons shall be restored severally and respectively to their former positions hereunder and thereafter all rights and remedies of the Trustee and the Holders shall continue as though no such proceeding had been instituted.

SECTION 510 Rights and Remedies Cumulative.

Except as otherwise provided with respect to the replacement or payment of mutilated, destroyed, lost or stolen Securities or coupons in the last paragraph of Section 306, no right or remedy herein conferred upon or reserved to the Trustee or to the Holders of Securities or coupons is intended to be exclusive of any other right or remedy, and every right and remedy shall, to the extent permitted by law, be cumulative and in addition to every other right and remedy given hereunder or now or hereafter existing at law or in equity or otherwise. The assertion or employment of any right or remedy hereunder, or otherwise, shall not prevent the concurrent assertion or employment of any other appropriate right or remedy.

SECTION 511 Delay or Omission Not Waiver.

No delay or omission of the Trustee or of any Holder of any Security or coupon to exercise any right or remedy accruing upon any Event of Default shall impair any such right or remedy or constitute a waiver of any such Event of Default or an acquiescence therein. Every right and remedy given by this Article or by law to the Trustee or to the Holders may be exercised from time to time, and as often as may be deemed expedient, by the Trustee or by the Holders, as the case may be.

SECTION 512 Control by Holders.

Subject to Article Six, with respect to the Securities of any series, the Holders of not less than a majority in principal amount of the Outstanding Securities of such series shall have the right to direct the time, method and place of conducting any proceeding for any remedy available to the Trustee, or exercising any trust or power conferred on the Trustee, relating to or arising under Section 501, provided that in each case

(1) such direction shall not be in conflict with any rule of law or with this Indenture;

(2) the Trustee may take any other action deemed proper by the Trustee which is not inconsistent with such direction; and

(3) the Trustee need not take any action which might involve it in personal liability or be unjustly prejudicial to the Holders of Securities of such series not consenting.

SECTION 513 Waiver of Past Defaults.

Subject to Section 502, the Holders of not less than a majority in principal amount of the Outstanding Securities of any series (or of all affected series, as the case may be) may on behalf of the Holders of all the Securities of such series waive any past default described in Section 501, and its consequences, except a default

(1) in respect of the payment of the principal of, or premium, if any, or interest, if any, on any Security or any related coupon; or

(2) in respect of a covenant or provision hereof which under Article Nine cannot be modified or amended without the consent of the Holder of each Outstanding Security of such series affected.

Upon any such waiver, any such default shall cease to exist, and any Event of Default arising therefrom shall be deemed to have been cured, for every purpose of this Indenture; but no such waiver shall extend to any subsequent or other default or Event of Default or impair any right consequent thereon.

SECTION 514 Waiver of Stay or Extension Laws.

Each of the Partnership and Petro-Canada (both as Issuer and Guarantor, as applicable) covenants (to the extent that it may lawfully do so) that it will not at any time insist upon, or plead, or in any manner whatsoever claim or take the benefit or advantage of, any stay or extension law wherever enacted, now or at any time hereafter in force, which may affect the covenants or the performance of this Indenture; and each of the Partnership and Petro-Canada (both as Issuer and Guarantor, as applicable) hereby expressly waives (to the extent that it may lawfully do so) all benefit or advantage of any such law and covenants that it will not hinder, delay or impede the execution of any power herein granted to the Trustee, but will suffer and permit the execution of every such power as though no such law had been enacted.

SECTION 515 Undertaking for Costs.

All parties to this Indenture agree, and each Holder, by acceptance of a Security, shall be deemed to have agreed that, in any suit for the enforcement of any right or remedy under this Indenture, or any suit against the Trustee for any action taken, suffered or omitted by it as Trustee, any court may, in its discretion, require the filing by any party litigant in such suit of an undertaking to pay the costs of such suit, and that such court may in its discretion assess reasonable costs, including reasonable attorneys' fees, against any party litigant in such suit, having due regard to the merits and good faith of the claims or defenses made by such party litigant; provided, however, that the provisions of this Section 515 shall not apply to any suit instituted by the Trustee, to any suit instituted by any Holder, or group of Holders, holding in the aggregate Securities representing more than 10% of the aggregate principal amount of the Outstanding Securities of any series, or to any suit instituted by any Holder for the enforcement of the payment of any installment of interest on any Security (or under the related Guarantee) on or after the Stated Maturity thereof expressed in such Security or for the enforcement of the payment of the principal of such Security (or the related Guarantee) at the Stated Maturity therefor.

ARTICLE SIX
THE TRUSTEE

SECTION 601 Notice of Defaults.

Within 90 days after the occurrence of any Default hereunder with respect to the Securities of any series, the Trustee shall transmit in the manner and to the extent provided in Section 313(c) of the Trust Indenture Act, notice of such Default hereunder known to a Responsible Officer of the Trustee, unless such Default shall have been cured or waived; provided, however, that, except in the case of a Default in the payment of the principal of, or premium, if any, or interest, if any, on any Security of such series or in the payment of any sinking fund installment with respect to Securities of such series, the Trustee shall be protected in withholding such notice if and so long as the board of directors, the executive committee or a trust committee of directors and/or Responsible Officers of the Trustee in good faith determines that the withholding of such notice is in the interest of the Holders of Securities of such series and any related coupons; and provided further, that in the case of any Default of the character specified in Section 501(4) with respect to Securities of such series, no such notice to Holders shall be given until at least 30 days after the occurrence thereof.

SECTION 602 Certain Duties and Responsibilities of Trustee.

(a) The Trustee, prior to the occurrence of an Event of Default and after the curing of all Events of Default that may have occurred, shall undertake to perform with respect to the Securities of any series, such duties and only such duties as are specifically set forth in this Indenture, and no implied covenants shall be read into this Indenture against the Trustee. If an Event of Default has occurred and is continuing, the Trustee shall exercise such of the rights and powers vested in it by this Indenture and use the same degree of care and skill in its exercise as a prudent person would exercise or use under the circumstances in the conduct of such person's own affairs.

(b) No provision of this Indenture shall be construed to relieve the Trustee from liability for its own negligent action, its own negligent failure to act or its own willful misconduct, except that:

(i) prior to the occurrence of an Event of Default and after the curing or waiving of all such Events of Default that may have occurred:

(A): the duties and obligations of the Trustee with respect to the Securities of any series shall be determined solely by the express provisions of this Indenture, and the Trustee shall not be liable except for the performance of such duties and obligations as are specifically set forth in this Indenture, and no implied covenants or obligations shall be read into this Indenture against the Trustee; and
(B): in the absence of bad faith on the part of the Trustee, the Trustee may conclusively rely, as to the truth of the statements and the correctness of the opinions expressed therein, upon any certificates or opinions furnished to the Trustee and conforming to the requirements of this Indenture and the Trust Indenture Act; but in the case of any such certificates or opinions that by any provision hereof or Section 314 of the Trust Indenture Act are specifically required to be furnished to the Trustee, the Trustee shall be under a duty to examine the same to determine whether or not they conform to the requirements of this Indenture (but need not confirm or investigate the accuracy of mathematical calculations or other facts stated therein);

(ii) the Trustee shall not be liable for any error of judgment made in good faith by a Responsible Officer of the Trustee, unless it shall be proved that the Trustee was negligent in ascertaining the pertinent facts;

(iii) the Trustee shall not be liable with respect to any action taken or omitted to be taken by it in good faith in accordance with the direction of the Holders of not less than a majority in principal amount of the Securities of any series at the time Outstanding relating to the time, method and place of conducting any proceeding for any remedy available to the Trustee, or exercising any trust or power conferred upon the Trustee under this Indenture; and

(iv) notwithstanding anything contained herein to the contrary, the Trustee shall not be required to expend or risk its own funds or otherwise incur any financial liability in the performance of any of its duties hereunder, or in the exercise of any of its rights or powers, if it shall have reasonable grounds for believing that repayment of such funds or adequate indemnity against such risk or liability is not reasonably assured to it.

(c) Whether or not therein expressly so provided, every provision of this Indenture relating to the conduct or affecting the liability of or affording protection to the Trustee, shall be subject to the provisions of this Section 602.

SECTION 603 Certain Rights of Trustee.

Subject to the provisions of Sections 315(a) through 315(d) of the Trust Indenture Act:

(1) the Trustee may, in the absence of bad faith on its part, conclusively rely and shall be protected in acting or refraining from acting upon any resolution, certificate, statement, instrument, opinion, report, notice, request, direction, consent, order, bond, debenture, note, other evidence of indebtedness or other paper or document believed by it to be genuine and to have been signed or presented by the proper party or parties;

(2) any request or direction of an Issuer mentioned herein shall be sufficiently evidenced by an Issuer Request or Issuer Order and any resolution of the Partners or the Board of Directors, as the case may be, may be sufficiently evidenced by an Authorizing Resolution;

(3) whenever in the administration of this Indenture the Trustee shall deem it desirable that a matter be proved or established prior to taking, suffering or omitting any action hereunder, the Trustee (unless other evidence be herein specifically prescribed) may, in the absence of bad faith on its part, conclusively rely upon an Officers' Certificate;

(4) before the Trustee acts or refrains from acting, the Trustee may consult with counsel of its selection and the written advice of such counsel or any Opinion of Counsel shall be full and complete authorization and protection in respect of any action taken, suffered or omitted by it hereunder in good faith and in reliance thereon;

(5) the Trustee shall be under no obligation to exercise any of the rights or powers vested in it by this Indenture at the request or direction of any of the Holders of Securities of any series or any related coupons pursuant to this Indenture, unless such Holders shall have offered to the Trustee reasonable security or indemnity against the costs, expenses and liabilities which might be incurred by it in compliance with such request or direction;

(6) the Trustee shall not be bound to make any investigation into the facts or matters stated in any resolution, certificate, statement, instrument, opinion, report, notice, request, direction, consent, order, bond, debenture, note, other evidence of indebtedness or other paper or document, but the Trustee, in its discretion, may make such further inquiry or investigation into such facts or matters as it may see fit, and, if the Trustee shall determine to make such further inquiry or investigation, it shall be entitled to examine the books, records and premises of the Partnership and Petro-Canada, personally or by agent or attorney at the sole cost of the Partnership and Petro-Canada, and shall incur no liability or additional liability of any kind by reason of such inquiry or investigation;

(7) the Trustee may execute any of the trusts or powers hereunder or perform any duties hereunder either directly or by or through agents or attorneys and the Trustee shall not be responsible for any misconduct or negligence on the part of any agent or attorney appointed with due care by it hereunder;

(8) the Trustee shall not be liable for any action taken, suffered or omitted by it in good faith and believed by it to be authorized or within the discretion or rights or powers conferred upon it by this Indenture;

(9) the Trustee shall not be deemed to have notice of any Default unless a Responsible Officer of the Trustee has actual knowledge thereof or unless written notice of any event which is in fact such a Default is received by the Trustee at the Corporate Trust Office of the Trustee, and such notice references the Securities and this Indenture;

(10) the rights, privileges, protections, immunities and benefits given to the Trustee, including, without limitation, its right to be indemnified, are extended to, and shall be enforceable by, the Trustee in each of its capacities hereunder whether as Trustee, Security Registrar, Paying Agent, Exchange Rate Agent, custodian or other capacity, and each agent, custodian and other Person employed to act hereunder; and

(11) the Trustee may request that the Partnership or the Guarantor deliver an Officers' Certificate setting forth the names of individuals and/or titles of officers authorized at such time to take specified actions pursuant to this Indenture.

SECTION 604 Trustee Not Responsible for Recitals or Issuance of Securities.

The recitals contained herein and in the Securities, except for the Trustee's certificates of authentication, and in any coupons shall be taken as the statements of each of the Partnership and Petro-Canada, and neither the Trustee nor any Authenticating Agent assumes any responsibility for their correctness. The Trustee makes no representations as to the validity or sufficiency of this Indenture, any offering materials or of the Securities or coupons, except that the Trustee represents that it is duly authorized to execute and deliver this Indenture, authenticate the Securities and perform its obligations hereunder and that the statements made by it in a Statement of Eligibility on Form T-1 supplied to the Partnership and Petro-Canada are true and accurate, subject to the qualifications set forth therein. Neither the Trustee nor any Authenticating Agent shall be accountable for the use or application by the Partnership or Petro-Canada of Securities or the proceeds thereof.

SECTION 605 May Hold Securities.

The Trustee, any Authenticating Agent, any Paying Agent, any Security Registrar or any other agent of the Issuer, the Guarantor (if applicable) or of the Trustee, in its individual or any other capacity, may become the owner or pledgee of Securities and coupons and, subject to Sections 310(b) and 311 of the Trust Indenture Act, may otherwise deal with the Partnership, Petro-Canada and any Restricted Subsidiary with the same rights it would have if it were not Trustee, Authenticating Agent, Paying Agent, Security Registrar or such other agent. A Trustee that has resigned or was removed shall remain subject to Section 311(a) of the Trust Indenture Act.

SECTION 606 Money Held in Trust.

Money held by the Trustee in trust hereunder need not be segregated from other funds except to the extent required by law. The Trustee shall be under no liability for interest on any money received by it hereunder except as otherwise agreed in writing with the applicable Issuer or, if applicable, the Guarantor.

SECTION 607 Compensation and Reimbursement.

Each of the Partnership and Petro-Canada jointly and severally agrees:

(1) to pay to the Trustee from time to time such compensation as the Trustee and Petro-Canada shall from time to time agree in writing for all services rendered by it hereunder (which compensation shall not be limited by any provision of law in regard to the compensation of a trustee of an express trust);

(2) except as otherwise expressly provided herein, to reimburse the Trustee upon its request for all reasonable expenses, disbursements and advances incurred or made by the Trustee in accordance with any provision of this Indenture (including the reasonable compensation and the expenses and disbursements of its agents and counsel), except any such expense, disbursement or advance as may be attributable to its negligence or bad faith; and

(3) to indemnify each of the Trustee, any predecessor Trustee and their agents for, and to hold them harmless against, any and all loss, damage, claims, liability or expense (including, without limitation, the reasonable compensation and the expenses and disbursements of its agents and counsel) incurred without negligence or bad faith on its part, arising out of or in connection with the acceptance or administration of the trust or trusts hereunder, the performance of its duties hereunder and/or the exercise of its rights hereunder, including the costs and expenses of investigating or defending itself against any claim (whether asserted by the Partnership, Petro-Canada or any Holder or any other Person) or liability in connection with the exercise or performance of any of its powers or duties hereunder.

The obligations of the Partnership and Petro-Canada under this Section to compensate the Trustee, to pay or reimburse the Trustee for expenses, disbursements and advances and to indemnify and hold harmless the Trustee shall constitute additional indebtedness hereunder and shall survive the satisfaction and discharge of this Indenture, payment of the Securities and/or the resignation or removal of the Trustee. As security for the performance of such obligations of the Partnership and Petro-Canada, the Trustee shall have a claim prior to the Securities upon all property and funds held or collected by the Trustee as such, except funds held in trust for the payment of principal of, or premium, if any, or interest or Additional Amounts, if any, on particular Securities or any coupons.

When the Trustee incurs expenses or renders services in connection with any Event of Default specified in Sections 501(6) or 501(7), the expenses (including reasonable charges and expenses of its counsel) of and the compensation for such services are intended to constitute expenses of administration under any applicable U.S. or Canadian federal, state or provincial bankruptcy, insolvency or other similar law.

The provisions of this Section shall survive the termination of this Indenture, the payment of the Securities and the resignation or removal of the Trustee.

SECTION 608 Corporate Trustee Required, Eligibility.

There shall be at all times a Trustee hereunder which shall be eligible to act as Trustee under Section 310(a)(1) of the Trust Indenture Act, shall have a combined capital and surplus (together with that of its parent) of at least $50,000,000 and shall have its Corporate Trust Office in New York, New York to the extent there is such an institution eligible and willing to serve. If such corporation publishes reports of condition at least annually, pursuant to law or to the requirements of federal, state, territorial or District of Columbia supervising or examining authority, then for the purposes of this Section, the combined capital and surplus of such corporation shall be deemed to be its combined capital and surplus as set forth in its most recent report of condition so published. If at any time the Trustee shall cease to be eligible in accordance with the provisions of this Section, it shall resign immediately in the manner and with the effect hereinafter specified in this Article.

SECTION 609 Resignation and Removal; Appointment of Successor.

(a) No resignation or removal of the Trustee and no appointment of a successor Trustee pursuant to this Article shall become effective until the acceptance of appointment by the successor Trustee in accordance with the applicable requirements of Section 610.

(b) The Trustee may resign at any time with respect to the Securities of one or more series by giving written notice thereof to the Partnership and Petro-Canada. If the instrument of acceptance by a successor Trustee required by Section 610 shall not have been delivered to the Trustee within 30 days after the giving of such notice of resignation, the resigning Trustee may petition any court of competent jurisdiction for the appointment of a successor Trustee with respect to the Securities of such series.

(c) The Trustee may be removed at any time with respect to the Securities of any series by Act of the Holders of not less than a majority in principal amount of the Outstanding Securities of such series, delivered to the Trustee and to the Issuer.

(d) If at any time:

(1): the Trustee shall acquire any conflicting interest as defined in Section 310(b) of the Trust Indenture Act and fail to comply with the provisions of Section 310(b)(i) of the Trust Indenture Act; or
(2): the Trustee shall fail to comply with the provisions of Section 310(b) of the Trust Indenture Act after written request therefor by the Issuer or by any Holder who has been a bona fide Holder of a Security for at least six months; or
(3): the Trustee shall cease to be eligible under Section 608 and shall fail to resign after written request therefor by the Issuer or by any Holder who has been a bona fide Holder of a Security for at least six months; or
(4): the Trustee shall become incapable of acting or shall be adjudged a bankrupt or insolvent or a receiver of such Trustee or of its property shall be appointed or any public officer shall take charge or control of such Trustee or of its property or affairs for the purpose of rehabilitation, conservation or liquidation;

then, in any such case, (A) each Issuer may remove the Trustee with respect to all Securities issued by such Issuer, or (B) subject to Section 315(e) of the Trust Indenture Act, any Holder who has been a bona fide Holder of a Security for at least six months may, on behalf of himself or herself and all others similarly situated, petition any court of competent jurisdiction for the removal of the Trustee with respect to all Securities of such series and the appointment of a successor Trustee or Trustees.

(e) If the Trustee shall resign, be removed or become incapable of acting, or if a vacancy shall occur in the office of Trustee for any cause, with respect to the Securities of one or more series, the Issuer in respect of each such series, by an Authorizing Resolution, shall promptly appoint a successor Trustee or Trustees with respect to the Securities of that or those series (it being understood that any such successor Trustee may be appointed with respect to the Securities of one or more or all of such series and that at any time there shall be only one Trustee with respect to the Securities of any particular series). If, within one year after such resignation, removal or incapability, or the occurrence of such vacancy, a successor Trustee with respect to the Securities of any series shall be appointed by Act of the Holders of a majority in principal amount of the Outstanding Securities of such series delivered to the Issuer and the retiring Trustee, the successor Trustee so appointed shall, forthwith upon its acceptance of such appointment, become the successor Trustee with respect to the Securities of such series and to that extent supersede the successor Trustee appointed by the Issuer. If no successor Trustee with respect to the Securities of any series shall have been so appointed by the Issuer or the Holders and accepted appointment in the manner hereinafter provided, any Holder who has been a bona fide Holder of a Security of such series for at least six months may, on behalf of himself or herself and all others similarly situated, petition any court of competent jurisdiction for the appointment of a successor Trustee with respect to the Securities of such series.

(f) The Issuer shall give notice of each resignation and each removal of the Trustee with respect to the Securities of any series and each appointment of a successor Trustee with respect to the Securities of any series to the Holders of Securities of such series in the manner provided for in Section 106. Each notice shall include the name of the successor Trustee with respect to the Securities of such series and the address of its Corporate Trust Office.

SECTION 610 Acceptance of Appointment by Successor.

(a) In case of the appointment hereunder of a successor Trustee with respect to all Securities, every such successor Trustee so appointed shall execute, acknowledge and deliver to the Issuer and, if applicable, the Guarantor and to the retiring Trustee an instrument accepting such appointment, and thereupon the resignation or removal of the retiring Trustee shall become effective and such successor Trustee, without any further act, deed or conveyance, shall become vested with all the rights, powers, trusts and duties of the retiring Trustee; but, on the request of the Issuer or the successor Trustee, such retiring Trustee shall, upon payment of its charges, execute and deliver an instrument transferring to such successor Trustee all the rights, powers and trusts of the retiring Trustee and shall duly assign, transfer and deliver to such successor Trustee all property and money held by such retiring Trustee hereunder.

(b) In case of the appointment hereunder of a successor Trustee with respect to the Securities of one or more (but not all) series, the Partnership and Petro-Canada, the retiring Trustee and each successor Trustee with respect to the Securities of one or more series shall execute and deliver an indenture supplemental hereto wherein each successor Trustee shall accept such appointment and which (1) shall contain such provisions as shall be necessary or desirable to transfer and confirm to, and to vest in, each successor Trustee all the rights, powers, trusts and duties of the retiring Trustee with respect to the Securities of that or those series to which the appointment of such successor Trustee relates, (2) if the retiring Trustee is not retiring with respect to all Securities, shall contain such provisions as shall be deemed necessary or desirable to confirm that all the rights, powers, trusts and duties of the retiring Trustee with respect to the Securities of that or those series as to which the retiring Trustee is not retiring shall continue to be vested in the retiring Trustee, and (3) shall add to or change any of the provisions of this Indenture as shall be necessary to provide for or facilitate the administration of the trusts hereunder by more than one Trustee, it being understood that nothing herein or in such supplemental indenture shall constitute such Trustees co-trustees of the same trust and that each such Trustee shall be trustee of a trust or trusts hereunder separate and apart from any trust or trusts hereunder administered by any other such Trustee; and upon the execution and delivery of such supplemental indenture the resignation or removal of the retiring Trustee shall become effective to the extent provided therein and each such successor Trustee, without any further act, deed or conveyance, shall become vested with all the rights, powers, trusts and duties of the retiring Trustee with respect to the Securities of that or those series to which the appointment of such successor Trustee relates; but, on request of the applicable Issuer or, if applicable, the Guarantor or any successor Trustee, such retiring Trustee shall, upon payment of all amounts due and owing to it hereunder, duly assign, transfer and deliver to such successor Trustee all property and money held by such retiring Trustee hereunder with respect to the Securities of that or those series to which the appointment of such successor Trustee relates. Whenever there is a successor Trustee with respect to one or more (but less than all) series of securities issued pursuant to this Indenture, the terms "Indenture" and "Securities" shall have the meanings specified in the provisos to the respective definitions of those terms in Section 101 which contemplate such situation.

(c) Upon request of any such successor Trustee, the Partnership and Petro-Canada shall execute any and all instruments for more fully and certainly vesting in and confirming to such successor Trustee all rights, powers and trusts referred to in paragraph (a) or (b) of this Section, as the case may be.

(d) No successor Trustee shall accept its appointment unless at the time of such acceptance such successor Trustee shall be qualified and eligible under this Article.

SECTION 611 Merger, Conversion, Consolidation or Succession to Business.

Any corporation into which the Trustee may be merged or converted or with which it may be consolidated, or any corporation resulting from any merger, conversion or consolidation to which the Trustee shall be a party, or any corporation succeeding to all or substantially all the corporate trust business of the Trustee, shall be the successor of the Trustee hereunder, provided that such corporation shall be otherwise qualified and eligible under this Article, without the execution or filing of any paper or any further act on the part of any of the parties hereto. In case any Securities shall have been authenticated, but not delivered, by the Trustee then in office, any successor by merger, conversion or consolidation to such authenticating Trustee may adopt such authentication and deliver the Securities so authenticated with the same effect as if such successor Trustee had itself authenticated such Securities. In case any of the Securities shall not have been authenticated by such predecessor Trustee, any successor Trustee may authenticate such Securities either in the name of any predecessor hereunder or in the name of the successor Trustee. In all such cases such certificates shall have the full force and effect which this Indenture provides for the certificate of authentication of the Trustee; provided, however, that the right to adopt the certificate of authentication of any predecessor Trustee or to authenticate Securities in the name of any predecessor Trustee shall apply only to its successor or successors by merger, conversion or consolidation.

SECTION 612 Authorization of Authenticating Agent.

At any time when any of the Securities remain Outstanding, the Trustee may authorize an Authenticating Agent or Agents with respect to one or more series of Securities which shall be authorized to act on behalf of the Trustee to authenticate Securities of such series and the Trustee shall give written notice of such appointment to all Holders of Securities of the series with respect to which such Authenticating Agent will serve, in the manner provided for in Section 106. Securities so authenticated shall be entitled to the benefits of this Indenture and shall be valid and obligatory for all purposes as if authenticated by the Trustee hereunder. Any such authorization shall be evidenced by an instrument in writing signed by a Responsible Officer of the Trustee, and a copy of such instrument shall be promptly furnished to the Issuer of each series of Securities to which the appointment relates. Wherever reference is made in this Indenture to the authentication and delivery of Securities by the Trustee or the Trustee's certificate of authentication, such reference shall be deemed to include authentication and delivery on behalf of the Trustee by an Authenticating Agent and a certificate of authentication executed on behalf of the Trustee by an Authenticating Agent. Each Authenticating Agent shall be acceptable to each relevant Issuer and shall at all times be a corporation organized and doing business under the laws of the United States of America, any state thereof or the District of Columbia, authorized under such laws to act as Authenticating Agent, having a combined capital and surplus of not less than $50,000,000 and subject to supervision or examination by federal or state authority. If such corporation publishes reports of condition at least annually, pursuant to law or to the requirements of said supervising or examining authority, then for the purposes of this Section 612, the combined capital and surplus of such corporation shall be deemed to be its combined capital and surplus as set forth in its most recent report of condition so published. If at any time an Authenticating Agent shall cease to be eligible in accordance with the provisions of this Section 612, it shall resign immediately in the manner and with the effect specified in this Section 612.

Any corporation into which an Authenticating Agent may be merged or converted or with which it may be consolidated, or any corporation resulting from any merger, conversion or consolidation to which such Authenticating Agent shall be a party, or any corporation succeeding to the corporate agency or corporate trust business of an Authenticating Agent, shall continue to be an Authenticating Agent, provided that such corporation shall be otherwise eligible under this Section 612, without the execution or filing of any paper or any further act on the part of the Trustee or the Authenticating Agent.

An Authenticating Agent may resign at any time by giving written notice thereof to the Trustee and to the relevant Issuers. The Trustee may at any time terminate the agency of an Authenticating Agent by giving written notice thereof to such Authenticating Agent and to the relevant Issuers. Upon receiving such a notice of resignation or upon such a termination, or in case at any time such Authenticating Agent shall cease to be eligible in accordance with the provisions of this Section 612, the Trustee may authorize a successor Authenticating Agent which shall be acceptable to the relevant Issuers and shall give written notice of such authorization to all Holders of Securities of the series with respect to which such Authenticating Agent will serve, in the manner provided for in Section 106. Any successor Authenticating Agent upon acceptance of its authorization hereunder shall become vested with all the rights, powers and duties of its predecessor hereunder, with like effect as if originally named as an Authenticating Agent. No successor Authenticating Agent shall be authorized unless eligible under the provisions of this Section 612.

Each of the Partnership and Petro-Canada, jointly and severally, agrees to pay to each Authenticating Agent from time to time reasonable compensation for its services under this Section 612.

If an authentication with respect to one or more series is made pursuant to this Section, the Securities of such series may have endorsed thereon, in addition to the Trustee's certificate of authentication, an alternate certificate of authentication in the following form:

Dated:

This is one of the Securities of the series designated and referred to in, and issued under, the within mentioned Indenture.

		THE BANK OF NEW YORK, as Trustee
		By:	as Authenticating Agent

SECTION 613 Appointment of Co-Trustee.

It is the purpose of this Indenture that there shall be no violation of any law of any jurisdiction denying or restricting the right of banking corporations or associations to transact business as trustee in such jurisdiction. It is recognized that in case of litigation under this Indenture, and in particular in case of the enforcement thereof on Default, or in the case the Trustee deems that by reason of any present or future law of any jurisdiction it may not exercise any of the powers, rights or remedies herein granted to the Trustee or hold title to the properties, in trust, as herein granted or take any action which may be desirable or necessary in connection therewith, it may be necessary that the Trustee appoint an individual or institution as a separate or co-trustee. The following provisions of this Section are adopted to these ends.

In the event that the Trustee appoints an additional individual or institution as a separate or co-trustee, each and every remedy, power, right, claim, demand, cause of action, immunity, estate, title, interest and lien expressed or intended by this Indenture to be exercised by or vested in or conveyed to the Trustee with respect thereto shall be exercisable by and vest in such separate or co-trustee but only to the extent necessary to enable such separate or co-trustee to exercise such powers, rights and remedies, and only to the extent that the Trustee by the laws of any jurisdiction is incapable of exercising such powers, rights and remedies and every covenant and obligation necessary to the exercise thereof by such separate or co-trustee shall run to and be enforceable by either of them.

Should any instrument in writing from the Partnership or Petro-Canada be required by the separate or co-trustee so appointed by the Trustee for more fully and certainly vesting in and confirming to him or it such properties, rights, powers, trusts, duties and obligations, any and all such instruments in writing shall, on request, be executed, acknowledged and delivered by the Partnership or Petro-Canada, as the case may be, or both; provided, that if an Event of Default shall have occurred and be continuing, if the Partnership or Petro-Canada does not execute any such instrument within fifteen (15) days after request therefor, the Trustee shall be empowered as an attorney-in-fact for the Partnership or Petro-Canada, as the case may be, to execute any such instrument in the name and stead of the Partnership or Petro-Canada. In case any separate or co-trustee or a successor to either shall die, become incapable of acting, resign or be removed, all the estates, properties, rights, powers, trusts, duties and obligations of such separate or co-trustee, so far as permitted by law, shall vest in and be exercised by the Trustee until the appointment of a new trustee or successor to such separate or co-trustee.

Every separate trustee and co-trustee shall, to the extent permitted by law, be appointed and act subject to the following provisions and conditions:

(i) all rights and powers, conferred or imposed upon the Trustee shall be conferred or imposed upon and may be exercised or performed by such separate trustee or co-trustee; and

(ii) No trustee hereunder shall be personally liable by reason of any act or omission of any other trustee hereunder.

Any notice, request or other writing given to the Trustee shall be deemed to have been given to each of the then separate trustees and co-trustees, as effectively as if given to each of them. Every instrument appointing any separate trustee or co-trustee shall refer to this Indenture and the conditions of this Article.

Any separate trustee or co-trustee may at any time appoint the Trustee as its agent or attorney-in-fact with full power and authority, to the extent not prohibited by law, to do any lawful act under or in respect of this Indenture on its behalf and in its name. If any separate trustee or co-trustee shall die, become incapable of acting, resign or be removed, all of its estates, properties, rights, remedies and trusts shall vest in and be exercised by the Trustee, to the extent permitted by law, without the appointment of a new or successor trustee.

SECTION 614 Force Majeure.

In no event shall the Trustee be responsible or liable for any failure or delay in the performance of its obligations under this Indenture arising out of or caused by, directly or indirectly, forces beyond its reasonable control, including without limitation strikes, work stoppages, accidents, acts of war or terrorism, civil or military disturbances, nuclear or natural catastrophes or acts of god, and interruptions, loss or malfunctions of utilities, communications or computer (software or hardware) services.

ARTICLE SEVEN
HOLDERS' LISTS AND REPORTS BY TRUSTEE AND ISSUER

SECTION 701 Issuer to Furnish Trustee Names and Addresses of Holders.

The Issuer will furnish or cause to be furnished to the Trustee (1) not more than 15 days after each Regular Record Date a list, in such form as the Trustee may reasonably require, of the names and addresses of Holders of each series of Securities issued by such Issuer hereunder as of such Regular Record Date; provided, however, that the Issuer shall not be obligated to furnish or cause to be furnished such list at any time that the list shall not differ in any respect from the most recent list furnished to the Trustee by the Issuer and at such times as the Trustee is acting as Security Registrar for the applicable series of Securities and (2) at such other times as the Trustee may request in writing within 30 days after the receipt by the Issuer of any such request, a list of similar form and content as of a date not more than 15 days prior to the time such list is furnished.

SECTION 702 Preservation of List of Names and Addresses of Holders.

The Trustee shall preserve, in as current a form as is reasonably practicable, all information as to the names and addresses of the Holders contained in the most recent list furnished to it as provided in Section 701 and as to the names and addresses of Holders received by the Trustee in its capacity as Security Registrar for the applicable series of Securities (if acting in such capacity).

The Trustee may destroy any list furnished to it as provided in Section 701 upon receipt of a new list so furnished.

Holders may communicate as provided in Section 312(b) of the Trust Indenture Act with other Holders with respect to their rights under this Indenture or under the Securities.

SECTION 703 Disclosure of Names and Addresses of Holders.

Every Holder of Securities or coupons, by receiving and holding the same, agrees with the Partnership, Petro-Canada and the Trustee that none of the Partnership, Petro-Canada or the Trustee or any agent of any of them shall be held accountable by reason of the disclosure of any such information as to the names and addresses of the Holders in accordance with Section 312 of the Trust Indenture Act, regardless of the source from which such information was derived, and that the Trustee shall not be held accountable by reason of mailing any material pursuant to a request made under Section 312(b) of the Trust Indenture Act.

SECTION 704 Reports by Trustee.

(a) Within 60 days after May 15 of each year commencing with the first May 15 after the first issuance of Securities pursuant to this Indenture, the Trustee shall transmit to the Holders of Securities, in the manner and to the extent provided in Section 313(c) of the Trust Indenture Act, a brief report dated as of such October 15 if required by Section 313(a) of the Trust Indenture Act.

(b) The Trustee shall comply with Sections 313(b) and 313(c) of the Trust Indenture Act.

(c) A copy of such report shall, at the time of such transmission to the Holders, be filed by the Trustee with Petro-Canada (Attention: General Counsel), with each securities exchange upon which any of the Securities are listed (if so listed) and also with the Commission. Each Issuer agrees to notify the Trustee promptly in writing when any Securities issued by it become listed on any securities exchange and of any delisting thereof.

SECTION 705 Reports by Petro-Canada and the Partnership, if applicable.

Petro-Canada and the Partnership, if the Partnership is required separately to file or furnish any information, documents and other reports with the Commission, shall:

(a) furnish to the Trustee, within 30 days after Petro-Canada or the Partnership, if applicable, is required to file with or furnish the same to the Commission, copies, which may be in electronic format, of its annual and quarterly reports and of the information, documents and other reports (or copies of such portions of any of the foregoing as the Commission may from time to time by rules and regulations prescribe) which Petro-Canada or the Partnership, as applicable, may be required to file with the Commission pursuant to Section 13 or Section 15(d) of the Exchange Act;

(b) file with the Trustee and the Commission, in accordance with rules and regulations prescribed from time to time by the Commission, such additional information, documents and reports with respect to compliance by Petro-Canada and the Partnership, as applicable, with the conditions and covenants of this Indenture as may be required from time to time by such rules and regulations;

(c) notwithstanding that neither Petro-Canada nor the Partnership may remain subject to the reporting requirements of Section 13 or 15(d) of the Exchange Act, or otherwise report on an annual and quarterly basis on forms provided for such annual and quarterly reporting pursuant to rules and regulations promulgated by the Commission, Petro-Canada shall furnish to the Trustee:

(1): within the time periods required for the filing of annual information forms and annual financial statements (or similar annual filings) by the Canadian securities regulatory authorities, the information required to be provided or incorporated by reference in an annual information form, annual financial statement or similar annual filing under the laws of Canada or any province thereof to security holders of a corporation with securities listed on the Toronto Stock Exchange, whether or not Petro-Canada or the Partnership has any of its securities listed on such exchange; and
(2): within the time periods required for the filing of quarterly reports by the Canadian securities regulatory authorities, the information required to be provided in quarterly reports under the laws of Canada or any province thereof to security holders of a company with securities listed on the Toronto Stock Exchange, whether or not Petro-Canada or the Partnership has any of its securities listed on such exchange.

Such reports, to the extent permitted by the rules and regulations of the Commission, will be prepared in accordance with Canadian disclosure requirements and GAAP; provided, however, that Petro-Canada shall not be obligated to file such reports with the Commission; and

(d) transmit to all Holders, in the manner and to the extent provided in Section 313(c) of the Trust Indenture Act, within 30 days after the filing thereof with the Trustee, such summaries of any information, documents and reports required to be filed by Petro-Canada or the Partnership, as applicable, pursuant to paragraphs (a) and (b) of this Section as may be required by rules and regulations prescribed from time to time by the Commission.

ARTICLE EIGHT
CONSOLIDATION, AMALGAMATION, MERGER AND SALE OF ASSETS

SECTION 801 Petro-Canada and the Partnership may Consolidate, etc. only on Certain Terms.

Neither Petro-Canada nor, so long as any Securities issued by the Partnership are Outstanding, the Partnership, shall consolidate or amalgamate with or merge into or enter into any statutory arrangement with any other corporation, or, directly or indirectly, convey, transfer or lease all or substantially all of its property to any Person, unless:

(1) the entity formed by or continuing from such consolidation or amalgamation or into which Petro-Canada or the Partnership, as the case may be, is merged or with which it enters into such statutory arrangement or the Person which acquires or leases all or substantially all of the property of Petro-Canada or the Partnership, as the case may be, (a) shall be a corporation, partnership or trust organized and validly existing under the laws of the United States of America, any state thereof or the District of Columbia or the laws of Canada or any province or territory thereof, or, if such consolidation, amalgamation, merger, statutory arrangement or other transaction would not impair the rights of Holders, in any other jurisdiction, provided that if such successor entity is organized under the laws of a jurisdiction other than the United States, any state thereof or the District of Columbia, or the laws of Canada or any province or territory thereof, the successor entity assumes the obligations of Petro-Canada or the Partnership, as applicable, under the Securities and this Indenture to pay Additional Amounts, substituting the name of such successor jurisdiction for Canada in each place that Canada appears in Section 1005, (b) shall expressly assume, by an indenture supplemental hereto, executed and delivered to the Trustee, in form satisfactory to the Trustee, or shall assume by operation of law, the obligation of Petro-Canada or the Partnership, as applicable, for the due and punctual payment of the principal of, and premium, if any, and interest and Additional Amounts, if any, on all the Securities issued hereunder and the performance and observance of every covenant of this Indenture on the part of Petro-Canada or the Partnership, as applicable, including in the case of a successor to the Guarantor, the Guarantor's obligations under any Guarantee to be performed or observed and (c) shall submit to the jurisdiction of United States federal and state courts in accordance with Section 113;

(2) immediately after giving effect to such transaction, no Default, no Event of Default, and no event which, after notice or lapse of time or both, would become an Event of Default, shall have happened and be continuing; and

(3) Petro-Canada or the Partnership, as the case may be, or such Person shall have delivered to the Trustee an Officers' Certificate and an Opinion of Counsel, each stating that such amalgamation, statutory arrangement, consolidation, merger, conveyance, transfer or lease and such supplemental indenture comply with this Article and that all conditions precedent herein provided for relating to such transaction have been complied with.

This Section 801 shall only apply to a merger, amalgamation, statutory arrangement or consolidation in which Petro-Canada or the Partnership is not the surviving entity and to conveyances, leases and transfers by Petro-Canada or the Partnership, as the case may be, as transferor or lessor. For greater certainty, the Issuer or Guarantor, as the case may be, shall be considered to be the surviving entity in the event of a statutory amalgamation by the Issuer or the Guarantor, as the case may be, with any Subsidiaries wholly-owned by it.

SECTION 802 Successor Person Substituted.

Upon any amalgamation or consolidation by Petro-Canada or the Partnership with or merger by Petro-Canada or the Partnership into any other corporation or any conveyance, transfer or lease of all or substantially all of the property of Petro-Canada or the Partnership to any Person in accordance with Section 801, the successor Person formed by such amalgamation or consolidation or into which Petro-Canada or the Partnership is merged or to which such conveyance, transfer or lease is made shall succeed to, and be substituted for, and may exercise every right and power of, Petro-Canada (both as Issuer and Guarantor) or the Partnership, respectively, under this Indenture with the same effect as if such successor Person had been named as the applicable Issuer or Guarantor herein and all references to Petro-Canada or the Partnership herein shall, as applicable, refer to such successor. In the event of any such conveyance or transfer, the predecessor Person, except in the case of a lease, shall be discharged of all obligations and covenants under this Indenture and the Securities and the coupons and the Guarantees, as the case may be, and may be dissolved and liquidated.

SECTION 803 Securities to Be Secured in Certain Events.

If, upon any such amalgamation, consolidation or statutory arrangement of Petro-Canada or the Partnership with or merger of Petro-Canada or the Partnership into any other corporation or entity, or upon any conveyance, lease or transfer of all or substantially all of the property of Petro-Canada or the Partnership to any other Person, any Restricted Property of Petro-Canada or the Partnership would thereupon become subject to any Security Interest, then unless such Security Interest is a Security Interest that Petro-Canada could have outstanding or could permit a Restricted Subsidiary to have outstanding pursuant to Section 1006 without equally and rateably securing the Securities, Petro-Canada or the Partnership, prior to or simultaneously with such consolidation, amalgamation, statutory arrangement, merger, conveyance, lease or transfer, will, as to such Restricted Property, secure the Securities Outstanding hereunder (together with, if Petro-Canada or the Partnership shall so determine, any other indebtedness of Petro-Canada or the Partnership now existing or hereafter created which is not subordinate to the Securities) equally and rateably with (or prior to) the indebtedness which upon such consolidation, amalgamation, merger, statutory arrangement, conveyance, lease or transfer is to become secured as to such Restricted Property by such Security Interest, or will cause such Securities to be so secured; provided that, for the purpose of providing such equal and rateable security, the principal amount of Original Issue Discount Securities and Indexed Securities shall mean that amount which would at the time of making such effective provision be due and payable pursuant to Section 502 and the terms of such Original Issue Discount Securities and Indexed Securities upon a declaration of acceleration of the Maturity thereof, and the extent of such equal and rateable security shall be adjusted, to the extent permitted by law, as and when said amount changes over time pursuant to the terms of such Original Issue Discount Securities and Indexed Securities.

ARTICLE NINE
SUPPLEMENTAL INDENTURES

SECTION 901 Supplemental Indentures Without Consent of Holders.

Without the consent of any Holders, Petro-Canada and the Partnership, when authorized by or pursuant to an Authorizing Resolution, and the Trustee, at any time and from time to time, may enter into one or more indentures supplemental hereto, in form satisfactory to the Trustee, for any of the following purposes:

(1) to evidence the succession of another Person to Petro-Canada or the Partnership and the assumption by any such successor of the covenants of Petro-Canada (including those as both Issuer and Guarantor) contained herein and in the Securities and Guarantees; or

(2) to add to the covenants of Petro-Canada or the Partnership for the benefit of the Holders of all or any series of Securities and any related coupons and Guarantees (and if such covenants are to be for the benefit of less than all series of Securities, stating that such covenants are being included solely for the benefit of such series) or to surrender any right or power herein conferred upon Petro-Canada or the Partnership, as the case may be; or

(3) to add any additional Events of Default (and if such Events of Default are to be for the benefit of less than all series of Securities, stating that such Events of Default are being included solely for the benefit of such series); or

(4) to add to or change any of the provisions of this Indenture to provide that Bearer Securities may be registrable as to principal, to change or eliminate any restrictions on the payment of principal of or any premium or interest on Bearer Securities, to permit Bearer Securities to be issued in exchange for Registered Securities, to permit Bearer Securities to be issued in exchange for Bearer Securities of other authorized denominations or to permit or facilitate the issuance of Securities in uncertificated form; provided that any such action shall not materially adversely affect the interests of the Holders of Securities of any series or any related coupons; or

(5) to change or eliminate any of the provisions of this Indenture; provided that any such change or elimination shall become effective only when there is no Security Outstanding of any series created prior to the execution of such supplemental indenture which is entitled to the benefit of such provision; or

(6) to secure the Securities or the Guarantees pursuant to the requirements of Section 803 or 1006 or otherwise; or

(7) to establish the form or terms of Securities of any series or any Guarantees thereof as permitted by Sections 201 and 301; or

(8) to evidence and provide for the acceptance of appointment hereunder by a successor Trustee with respect to the Securities of one or more series and to add to or change any of the provisions of this Indenture as shall be necessary to provide for or facilitate the administration of the trusts hereunder by more than one Trustee, pursuant to the requirements of Section 610(b); or

(9) to close this Indenture with respect to the authentication and delivery of additional series of Securities; or

(10) to supplement any of the provisions of this Indenture to such extent as shall be necessary to permit or facilitate the defeasance and discharge of any series of Securities pursuant to Sections 401, 1402 and 1403; provided that any such action shall not materially adversely affect the interests of the Holders of Securities of such series and any related coupons or any other series of Securities; or

(11) to cure any ambiguity, to correct or supplement any provision herein which may be inconsistent with any other provision herein; provided such action shall not materially adversely affect the interests of the Holders of Securities of any series and any related coupons.

SECTION 902 Supplemental Indentures with Consent of Holders.

With the consent of the Holders of not less than a majority in principal amount of all Outstanding Securities of a series affected by such supplemental indenture, by Act of said Holders delivered to Petro-Canada, the Partnership and the Trustee, Petro-Canada and the Partnership, when each is authorized by or pursuant to an Authorizing Resolution, and the Trustee may enter into an indenture or indentures supplemental hereto for the purpose of adding any provisions to or changing in any manner or eliminating any of the provisions of this Indenture which affect such series of Securities or of modifying in any manner the rights of the Holders of Securities of such series under this Indenture; provided, however, that no such supplemental indenture shall, without the consent of the Holder of each Outstanding Security of such series,

(1) change the Stated Maturity of the principal of, or premium, if any, or any installment of interest on any Security of such series, or reduce the principal amount thereof, or premium, if any, or the rate of interest, if any, thereon, or change any obligation of either Issuer or the Guarantor to pay Additional Amounts contemplated by Section 1005 (except as contemplated by Section 801(1) and permitted by Section 901(1)), or reduce the amount of the principal of an Original Issue Discount Security of such series that would be due and payable upon a declaration of acceleration of the Maturity thereof pursuant to Section 502 or the amount thereof provable in bankruptcy pursuant to Section 504, or adversely affect any right of repayment at the option of any Holder of any Security of such series, or change any Place of Payment where, or the Currency in which, any Security of such series or any premium or interest thereon is payable, or impair the right to institute suit for the enforcement of any such payment on or after the Stated Maturity thereof (or, in the case of redemption or repayment at the option of the Holder, on or after the Redemption Date or Repayment Date, as the case may be), or adversely affect any right to convert or exchange any Security as may be provided pursuant to Section 301 herein; or

(2) reduce the percentage in principal amount of the Outstanding Securities of such series required for any such supplemental indenture, or the consent of whose Holders is required for modification or amendment of the provisions of this Indenture or any waiver of compliance with certain provisions of this Indenture which affect such series or certain defaults applicable to such series hereunder and their consequences provided for in this Indenture, or reduce the requirements of Section 1504 for quorum or voting with respect to Securities of such series; or

(3) modify in any manner adverse to the Holders of Securities entitled to the benefit of Guarantees, the terms and conditions of the Guarantees; or

(4) modify any of the provisions of this Section, Section 513 or Section 1010, except to increase any such percentage or to provide that certain other provisions of this Indenture which affect such series cannot be modified or waived without the consent of the Holder of each Outstanding Security of such series.

A supplemental indenture which changes or eliminates any covenant or other provision of this Indenture which has expressly been included solely for the benefit of one or more particular series of Securities, or which modifies the rights of the Holders of Securities of such series with respect to such covenant or other provision, shall be deemed not to affect the rights under this Indenture of the Holders of Securities of any other series. Any such supplemental indenture adding any provisions to or changing in any manner or eliminating any of the provisions of this Indenture, or modifying in any manner the rights of the Holders of Securities of such series, shall not affect the rights under this Indenture of the Holders of Securities of any other series.

It shall not be necessary for any Act of Holders under this Section to approve the particular form of any proposed supplemental indenture, but it shall be sufficient if such Act shall approve the substance thereof.

SECTION 903 Execution of Supplemental Indentures.

In executing, or accepting the additional trusts created by, any supplemental indenture permitted by this Article or the modifications thereby of the trusts created by this Indenture, the Trustee shall be entitled to receive, and shall be fully protected in relying upon, an Opinion of Counsel and an Officers' Certificate collectively stating that the execution of such supplemental indenture is authorized or permitted by this Indenture and that all conditions precedent herein provided for relating to such transaction have been complied with. The Trustee may, but shall not be obligated to, enter into any such supplemental indenture which affects the Trustee's own rights, duties or immunities under this Indenture or otherwise.

SECTION 904 Effect of Supplemental Indentures.

Upon the execution of any supplemental indenture under this Article, this Indenture shall be modified in accordance therewith, and such supplemental indenture shall form a part of this Indenture for all purposes; and every Holder of Securities theretofore or thereafter authenticated and delivered hereunder shall be bound thereby.

SECTION 905 Conformity with the Trust Indenture Act.

Every supplemental indenture executed pursuant to this Article shall conform to the requirements of the Trust Indenture Act as then in effect.

SECTION 906 Reference in Securities to Supplemental Indentures.

Securities of any series authenticated and delivered after the execution of any supplemental indenture pursuant to this Article may, and shall, if required by the Trustee, bear a notation in form approved by the Trustee as to any matter provided for in such supplemental indenture. If the Issuer shall so determine, new Securities of any series so modified as to conform, in the opinion of the Trustee and the Issuer, to any such supplemental indenture may be prepared and executed by the Issuer (and endorsed by the Guarantor, in the case of the Guarantees) and authenticated and delivered by the Trustee in exchange for Outstanding Securities of such series.

SECTION 907 Notice of Supplemental Indentures.

Promptly after the execution of any supplemental indenture pursuant to the provisions of Section 902, the applicable Issuer shall give notice thereof to the Holders of each Outstanding Security affected, in the manner provided for in Section 106, setting forth in general terms the substance of such supplemental indenture.

ARTICLE TEN
COVENANTS

SECTION 1001 Payment of Principal, Premium, if any, and Interest.

Each of Petro-Canada and the Partnership covenants and agrees for the benefit of the Holders of each series of Securities issued by it and any related coupons that it will duly and punctually pay the principal of, and premium, if any, and interest, if any, on the Securities of that series in accordance with the terms of the Securities, any coupons appertaining thereto and this Indenture. Unless otherwise specified as contemplated by Section 301 with respect to any series of Securities, any interest installments due on Bearer Securities on or before Maturity shall be payable only upon presentation and surrender of the several coupons for such interest installments as are evidenced thereby as they severally mature.

SECTION 1002 Maintenance of Office or Agency.

If the Securities of a series are issuable only as Registered Securities, the Issuer thereof will maintain in each Place of Payment for any series of Securities an office or agency where Securities of that series may be presented or surrendered for payment, where Securities of that series may be surrendered for registration of transfer or exchange, where Securities of that series that are convertible or exchangeable may be surrendered for conversion or exchange, as applicable, and where notices and demands to or upon the Issuer and, if applicable, the Guarantor in respect of the Securities of that series and this Indenture may be served.

If Securities of a series are issuable as Bearer Securities, the Issuer thereof will maintain (a) in New York, New York an office or agency where any Registered Securities of that series may be presented or surrendered for payment, where any Registered Securities of that series may be surrendered for registration of transfer, where Securities of that series may be surrendered for exchange, where Securities of that series that are convertible or exchangeable may be surrendered for conversion or exchange, as applicable, where notices and demands to or upon the Issuer and, if applicable, the Guarantor in respect of the Securities of that series and this Indenture may be served and where Bearer Securities of that series and related coupons may be presented or surrendered for payment in the circumstances described in the following paragraph (and not otherwise), (b) subject to any laws or regulations applicable thereto, in a Place of Payment for that series which is located outside the United States, an office or agency where Securities of that series and related coupons may be presented and surrendered for payment; provided, however, that, if the Securities of that series are listed on any securities exchange located outside the United States and such securities exchange shall so require, the Issuer will maintain a Paying Agent for the Securities of that series in any required city located outside the United States so long as the Securities of that series are listed on such exchange, and (c) subject to any laws or regulations applicable thereto, in a Place of Payment for that series located outside the United States, an office or agency where any Registered Securities of that series may be surrendered for registration of transfer, where Securities of that series may be surrendered for exchange, where Securities of that series that are convertible and exchangeable may be surrendered for conversion or exchange, as applicable, and where notices and demands to or upon the Issuer and, if applicable, the Guarantor in respect of the Securities of that series and this Indenture may be served.

Each Issuer will give prompt written notice to the Trustee of the location, and any change in the location, of any such office or agency. If at any time an Issuer shall fail to maintain any such required office or agency or shall fail to furnish, in writing, the Trustee with the address thereof, such presentations, surrenders, notices and demands may be made or served at the Corporate Trust Office of the Trustee, except that Bearer Securities of any series and the related coupons may be presented and surrendered for payment at the offices specified in the Security, in London, United Kingdom, and each of the Partnership and Petro-Canada hereby appoints the same as its agents to receive such respective presentations, surrenders, notices and demands.

Unless otherwise specified with respect to any Securities pursuant to Section 301, no payment of principal, premium or interest on Bearer Securities shall be made at any office or agency of the Issuer or the Guarantor in the United States or by check mailed to any address in the United States or by transfer to an account maintained with a bank located in the United States; provided, however, that, if the Securities of a series are payable in Dollars, payment of principal of, and premium, if any, and interest, if any, on any Bearer Security shall be made at the office of the Paying Agent in New York, New York if (but only if) payment in Dollars of the full amount of such principal, premium or interest, as the case may be, at all offices or agencies outside the United States maintained for such purpose by the Issuer or the Guarantor in accordance with this Indenture is illegal or effectively precluded by exchange controls or other similar restrictions.

Each Issuer may also from time to time designate one or more other offices or agencies where the Securities of one or more series issued by it may be presented or surrendered for any or all such purposes and may from time to time rescind any such designation; provided, however, that no such designation or rescission shall in any manner relieve the applicable Issuer of its obligation to maintain an office or agency in accordance with the requirements set forth above for Securities of any series issued by it for such purposes. Each of Petro-Canada and the Partnership will give prompt written notice to the Trustee of any such designation or rescission and of any change in the location of any such other office or agency. Unless otherwise specified with respect to any Securities as contemplated by Section 301 with respect to a series of Securities, each Issuer hereby designates as a Place of Payment for each series of Securities issued by it the Corporate Trust Office in New York, New York and initially appoints the Trustee at its Corporate Trust Office as Paying Agent in such city and as its agent to receive all such presentations, surrenders, notices and demands.

Unless otherwise specified with respect to any Securities pursuant to Section 301, if and so long as the Securities of any series (i) are denominated in a Currency other than Dollars or (ii) may be payable in a Currency other than Dollars, or so long as it is required under any other provision of this Indenture, then the Issuer of such series will maintain with respect to each such series of Securities, or as so required, at least one Exchange Rate Agent.

SECTION 1003 Money for Securities Payments to Be Held in Trust.

If the Issuer shall at any time act as its own Paying Agent with respect to any series of Securities and any related coupons, it will, on or before each due date of the principal of, or premium, if any, or interest, if any, on any of the Securities of that series, segregate and hold in trust for the benefit of the Persons entitled thereto a sum in the Currency in which the Securities of such series are payable (except as otherwise specified pursuant to Section 301 for the Securities of such series and except, if applicable, as provided in Sections 312(b), 312(d) and 312(e)) sufficient to pay the principal of, or premium, if any, or interest, if any, on Securities of such series so becoming due until such sums shall be paid to such Persons or otherwise disposed of as herein provided and will promptly notify the Trustee in writing of its action or failure so to act.

Whenever an Issuer shall have one or more Paying Agents for any series of Securities and any related coupons, it will, prior to or on each due date of the principal of, or premium, if any, or interest, if any, on any Securities of that series, deposit with a Paying Agent a sum (in the Currency described in the preceding paragraph) sufficient to pay the principal, or premium, if any, or interest, if any, so becoming due, such sum to be held in trust for the benefit of the Persons entitled to such principal, premium or interest, and (unless such Paying Agent is the Trustee) the Issuer will promptly notify the Trustee in writing of its action or failure so to act.

The Issuer will cause each Paying Agent (other than the Trustee) for any series of Securities to execute and deliver to the Trustee an instrument in which such Paying Agent shall agree with the Trustee, subject to the provisions of this Section, that such Paying Agent will:

(1) hold all sums held by it for the payment of the principal of, and premium, if any, and interest, if any, on Securities of such series in trust for the benefit of the Persons entitled thereto until such sums shall be paid to such Persons or otherwise disposed of as herein provided;

(2) give the Trustee written notice of any default by the Issuer or, if applicable, the Guarantor (or any other obligor upon the Securities of such series) in the making of any payment of principal of, or premium, if any, or interest, if any, on the Securities of such series; and

(3) at any time during the continuance of any such default, upon the written request of the Trustee, forthwith pay to the Trustee all sums so held in trust by such Paying Agent.

Each of Petro-Canada and the Partnership may at any time, for the purpose of obtaining the satisfaction and discharge of this Indenture or for any other purpose, pay, or by Issuer Order direct any Paying Agent to pay, to the Trustee all sums held in trust by Petro-Canada or the Partnership or such Paying Agent, such sums to be held by the Trustee upon the same trusts as those upon which sums were held by Petro-Canada or the Partnership or such Paying Agent; and, upon such payment by any Paying Agent to the Trustee, such Paying Agent shall be released from all further liability with respect to such sums.

Except as provided in the Securities of any series, any money deposited with the Trustee or any Paying Agent, or then held by Petro-Canada or the Partnership, in trust for the payment of the principal of, or premium, if any, or interest, if any, on any Security of any series, or any coupon appertaining thereto, and remaining unclaimed for two years (or such shorter period as may be specified in the applicable abandoned property statutes) after such principal, premium or interest has become due and payable shall be paid to the Issuer on Issuer Request, or (if then held by Petro-Canada or the Partnership) shall be discharged from such trust; and the Holder of such Security or coupon shall thereafter, as an unsecured general creditor, look only to Petro-Canada or the Partnership, as applicable, for payment thereof, and all liability of the Trustee or such Paying Agent with respect to such trust money, and all liability of the Partnership or the Guarantor as trustee thereof, shall thereupon cease; provided, however, that the Trustee or such Paying Agent, before being required to make any such repayment, may at the expense of Petro-Canada and the Partnership cause to be published once, in an Authorized Newspaper, notice that such money remains unclaimed and that, after a date specified therein, which shall not be less than 30 days from the date of such publication, any unclaimed balance of such money then remaining will be repaid to the Issuer.

SECTION 1004 Statement as to Compliance.

Petro-Canada, on behalf of itself and the Partnership, shall deliver to the Trustee, within 120 days after the end of each fiscal year, an Officers' Certificate stating that a review of the activities of Petro-Canada and its Subsidiaries during the preceding fiscal year has been made under the supervision of the signing Officers with a view to determining whether Petro-Canada and the Partnership have kept, observed, performed and fulfilled their respective obligations under this Indenture, and further stating, as to the Officers signing such certificate, that to the best of their knowledge Petro-Canada and the Partnership have kept, observed, performed and fulfilled each and every covenant contained in this Indenture and is not in default in the performance or observance of any of the terms, provisions and conditions of this Indenture (or, if a Default or Event of Default has occurred, describing all such Defaults or Events of Default of which such Officers may have knowledge and what action Petro-Canada or the Partnership, as applicable, is taking or proposes to take with respect thereto) and that to the best of their knowledge no event has occurred and remains in existence by reason of which payments on account of the principal of, or premium, if any, or interest, if any, on the Securities is prohibited or if such event has occurred, a description of the event and what action Petro-Canada or the Partnership, as applicable, is taking or proposes to take with respect thereto.

So long as any of the Securities are outstanding, Petro-Canada will deliver to the Trustee, forthwith upon any Officer becoming aware of any Default or Event of Default, an Officers' Certificate specifying such Default or Event of Default and what action Petro-Canada or the Partnership, as applicable, is taking or proposes to take with respect thereto.

SECTION 1005 Additional Amounts.

(a) Unless otherwise provided pursuant to Section 301, all payments made by or on behalf of an Issuer or the Guarantor under or with respect to the Securities of any series or under or with respect to any Guarantees related thereto will be made free and clear of and without withholding or deduction for or on account of any present or future tax, duty, levy, impost, assessment or other governmental charge (including penalties, interest and other liabilities related thereto) imposed or levied by or on behalf of the Government of Canada or of any province or territory thereof or by any authority or agency therein or thereof having power to tax (hereinafter "Canadian Taxes"), unless the Issuer or the Guarantor, as applicable, is required to withhold or deduct Canadian Taxes by law or by the interpretation or administration thereof. If the Issuer or the Guarantor is so required to withhold or deduct any amount for or on account of Canadian Taxes from any payment made under or with respect to the Securities or the Guarantees, the Issuer or the Guarantor, as the case may be, will pay to each Holder as additional interest such additional amounts ("Additional Amounts") as may be necessary so that the net amount received by each Holder after such withholding or deduction (and after deducting any Canadian Taxes on such Additional Amounts) will not be less than the amount the Holder would have received if such Canadian Taxes had not been withheld or deducted. However, no Additional Amounts will be payable with respect to a payment made to a Holder (such Holder, an "Excluded Holder") in respect of the beneficial owner thereof:

(1) with which Petro-Canada or the Partnership does not deal at arm's length for the purposes of the Income Tax Act (Canada) at the time of the making of such payment;

(2) which is subject to such Canadian Taxes by reason of the Holder being a resident, domicile or national of, or engaged in business or maintaining a permanent establishment or other physical presence in or otherwise having some connection with Canada or any province thereof otherwise than by the mere holding of Securities or the receipt of payments thereunder;

(3) which is subject to such Canadian Taxes by reason of the Holder's failure to comply with any certification, identification, information, documentation or other reporting requirements if compliance is required by law, regulation, administrative practice or an applicable treaty as a precondition to exemption from, or a reduction in the rate of deduction or withholding of, such Canadian Taxes; or

(4) which by reason of the legal nature of the Holder of the Securities is disentitled to the benefit of an applicable treaty.

Each Issuer and the Guarantor, as applicable, will also:

(i) make such withholding or deduction; and

(ii) remit the full amount deducted or withheld to the relevant authority in accordance with applicable law.

Each Issuer and the Guarantor, as applicable, will furnish to the Holders of the Securities, within 60 days after the date the payment of any Canadian Taxes is due pursuant to applicable law, certified copies of tax receipts or other documents evidencing such payment.

(b) Each Issuer and the Guarantor, as applicable, will indemnify and hold harmless each Holder (other than an Excluded Holder) and, upon written request, reimburse each such Holder for the amount, excluding any Additional Amounts that have been previously been paid with respect thereto, of:

(1): any Canadian Taxes so levied or imposed and paid by such Holder as a result of payments made under or with respect to the Securities or the Guarantees;
(2): any liability (including penalties, interest and expenses) arising therefrom or with respect thereto; and
(3): any Canadian Taxes imposed with respect to any reimbursement under clause (1) or (2) in this paragraph, but excluding any such Canadian Taxes on such Holder's net income.

At least five (5) days prior to each date on which any payment under or with respect to the Securities is due and payable, if the Issuer will be obligated to pay Additional Amounts with respect to such payment, the Issuer will deliver to the Trustee an Officers' Certificate stating the fact that such Additional Amounts will be payable, specifying the amounts so payable, certifying that the Issuer shall pay any such withholding or deduction to the appropriate taxing authority and will set forth such other information necessary to enable the Trustee to pay such Additional Amounts to Holders on the payment date. The Partnership and Petro-Canada, jointly and severally, agree to indemnify the Trustee and each Paying Agent for, and to hold it harmless against, any loss liability or expense incurred without negligence, bad faith or wilful misconduct on its part, arising out of or in connection with, taken or omitted by it in reliance on any certificate furnished to it pursuant to this Section 1005 or the failure to provide any such certificate. The provisions of this section 1005(4)(b) shall survive the termination of this Agreement, the payment of the Securities and the removal or resignation of any of the Trustee or Paying Agents.

Notwithstanding the foregoing, no Additional Amounts or indemnity amounts will be payable in excess of Additional Amounts or indemnity amounts which would be required if the Holder of Securities was a resident of the United States for purposes of Canada-U.S. Income Tax Convention (1980), as amended.

Wherever in this Indenture, the Securities or the Guarantees there is mentioned, in any context, the payment of principal, and premium, if any, interest, if any, or any other amount payable under or with respect to a Security or Guarantee, such mention shall be deemed to include mention of the payment of Additional Amounts to the extent that, in such context, Additional Amounts are, were or would be payable in respect thereof.

SECTION 1006 Limitation on Security Interests.

So long as any Securities are outstanding and subject to all the provisions of this Indenture, Petro-Canada will not, and will not permit any Restricted Subsidiary to, create, assume or otherwise have outstanding any Security Interest in, on or over any of its or their interest in any Restricted Property, present or future, securing any Debt of any Person, other than Permitted Encumbrances, unless at the time thereof or prior thereto the Securities then outstanding under this Indenture are equally and rateably secured with such Debt.

SECTION 1007 Payment of Taxes.

Petro-Canada will pay or discharge or cause to be paid or discharged, before the same shall become delinquent, all material taxes, assessments and governmental charges levied or imposed upon Petro-Canada or any Restricted Subsidiary or upon the income, profits or property of Petro-Canada or any Restricted Subsidiary; provided, however, that Petro-Canada shall not be required to pay or discharge or cause to be paid or discharged any such tax, assessment or charge whose amount, applicability or validity is being contested in good faith by appropriate proceedings.

SECTION 1008 Limitation on Sale and Leaseback Transactions.

Petro-Canada will not, nor will it permit any of its Restricted Subsidiaries to, enter into any Sale and Leaseback Transaction with respect to any Restricted Property owned by Petro-Canada or any Subsidiary on the Issue Date unless:

(1) such transaction involves a lease or right to possession or use for a temporary period not to exceed three years following such sale, and such lease does not create or evidence a Capital Lease Obligation; or

(2) Petro-Canada or such Subsidiary would, on the effective date of such transaction, be entitled to issue, assume or guarantee Debt secured by a Security Interest on such property at least equal in amount to the Attributable Debt in respect thereof, without equally and rateably securing the Securities then outstanding, as set forth under Section 1006; or

(3) if the proceeds of such sale (a) are equal to or greater than the fair market value (as determined by any two of the following: the Chairman, the President, any Vice President, the Treasurer and the Controller of Petro-Canada) of such property and (b) are applied within 270 days after the receipt of such proceeds, directly or indirectly, to either (i) the purchase, acquisition or construction of Restricted Property to be used in the operation of the business of Petro-Canada or any of its Restricted Subsidiaries or (ii) the repayment of Funded Debt (including Securities then outstanding) of Petro-Canada or any of its Restricted Subsidiaries ranking equally and rateably with the Securities then outstanding. For purposes of this Indenture, any Restricted Property purchased, acquired or constructed pursuant to clause (b)(i) of this paragraph, will be deemed to have been purchased, acquired or constructed prior to the Issue Date.

The preceding restrictions shall not apply to any Sale and Leaseback Transaction between Petro-Canada and its Restricted Subsidiaries or between Restricted Subsidiaries of Petro-Canada.

SECTION 1009 Existence.

Subject to Article Eight, Petro-Canada and, so long as any Securities issued by the Partnership remain Outstanding, the Partnership will do or cause to be done all things necessary to preserve and keep in full force and effect its existence and the rights (charter and statutory) and franchises of Petro-Canada and the Partnership and any Restricted Subsidiary; provided, however, that Petro-Canada and the Partnership shall not be required to preserve any such right or franchise if Petro-Canada shall determine that the preservation thereof is no longer desirable in the conduct of the business of Petro-Canada and its Subsidiaries as a whole.

SECTION 1010 Waiver of Certain Covenants.

With respect to any series of Securities, either of Petro-Canada or the Partnership may, with respect to such series, omit in any particular instance to comply with any term, provision or condition which affects such series set forth in Section 803 or Sections 1006 through 1009 inclusive or, as specified pursuant to Section 301(20) for Securities of such series, in any covenants added to Article Ten pursuant to Section 301(20) or Section 301(25) in connection with Securities of such series, if before the time for such compliance the Holders of at least a majority in principal amount of all Outstanding Securities of such series (or of all affected series, as the case may be), by Act of such Holders, waive such compliance in such instance with such term, provision or condition, but no such waiver shall extend to or affect such term, provision or condition except to the extent so expressly waived, and, until such waiver shall become effective, the obligations of Petro-Canada and the Partnership and the duties of the Trustee to Holders of Securities of such series in respect of any such term, provision or condition shall remain in full force and effect.

SECTION 1011 Calculation of Original Issue Discount.

If any Securities are Original Issue Discount Securities, then the Issuer thereof shall file with the Trustee promptly after the end of each calendar year (i) a written notice specifying the amount of original issue discount (including daily rates and accrual periods) accrued on Outstanding Securities as of the end of such year and (ii) such other specified information relating to such original issue discount as may then be relevant under the Internal Revenue Code of 1986, as amended from time to time.

ARTICLE ELEVEN
REDEMPTION OF SECURITIES

SECTION 1101 Applicability of Article.

Securities of any series which are redeemable before their Stated Maturity shall be redeemable in accordance with the terms of such Securities and (except as otherwise specified as contemplated by Section 301 for Securities of any series) in accordance with this Article.

SECTION 1102 Election to Redeem; Notice to Trustee.

The election of the Issuer of any series of Securities to redeem all or part of the Securities of such series shall be evidenced by or pursuant to an Authorizing Resolution. In case of any redemption at the election of the Issuer, the Issuer shall, at least 60 days prior to the Redemption Date fixed by the Issuer (unless a shorter notice shall be satisfactory to the Trustee), notify the Trustee in writing of such Redemption Date and of the principal amount of Securities of such series to be redeemed and shall deliver to the Trustee such documentation and records as shall enable the Trustee to select the Securities to be redeemed pursuant to Section 1103. In the case of any redemption of Securities prior to the expiration of any restriction on such redemption provided in the terms of such Securities or elsewhere in this Indenture, the Issuer shall furnish the Trustee with an Officers' Certificate evidencing compliance with such restriction.

SECTION 1103 Selection by Trustee of Securities to Be Redeemed.

If less than all the Securities of any series are to be redeemed, the particular Securities to be redeemed shall be selected not more than 90 days prior to the Redemption Date by the Trustee, from the Outstanding Securities of such series not previously called for redemption, by such method as the Trustee shall deem fair and appropriate and which may provide for the selection for redemption of portions of the principal of Securities of such series; provided, however, that no such partial redemption shall reduce the portion of the principal amount of a Security not redeemed to less than the minimum authorized denomination for Securities of such series established pursuant to Section 301.

The Trustee shall promptly notify the Issuer in writing of the Securities selected for redemption and, in the case of any Securities selected for partial redemption, the principal amount thereof to be redeemed.

For all purposes of this Indenture, unless the context otherwise requires, all provisions relating to the redemption of Securities shall relate, in the case of any Security redeemed or to be redeemed only in part, to the portion of the principal amount of such Security which has been or is to be redeemed.

SECTION 1104 Notice of Redemption.

Except as otherwise specified as contemplated by Section 301, notice of redemption shall be given in the manner provided for in Section 106 not less than 30 nor more than 60 days prior to the Redemption Date, to each Holder of Securities to be redeemed. Failure to give notice in the manner provided in Section 106 to the Holder of any Securities designated for redemption as a whole or in part, or any defect in the notice to any such Holder, shall not affect the validity of the proceedings for the redemption of any other Securities or portion thereof.

All notices of redemption shall state:

(1) the Redemption Date;

(2) the Redemption Price and the amount of accrued interest to the Redemption Date payable as provided in Section 1106, if any;

(3) if less than all the Outstanding Securities of any series are to be redeemed, the identification (and, in the case of partial redemption, the principal amounts) of the particular Securities to be redeemed;

(4) in case any Security is to be redeemed in part only, the notice which relates to such Security shall state that on and after the Redemption Date, upon surrender of such Security, the Holder will receive, without charge, a new Security or Securities of authorized denominations for the principal amount thereof remaining unredeemed;

(5) that on the Redemption Date, the Redemption Price and accrued interest, if any, to the Redemption Date payable as provided in Section 1106 will become due and payable upon each such Security, or the portion thereof, to be redeemed and, if applicable, that interest thereon will cease to accrue on and after said date;

(6) the Place or Places of Payment where such Securities, together in the case of Bearer Securities with all coupons appertaining thereto, if any, maturing after the Redemption Date, are to be surrendered for payment of the Redemption Price and accrued interest, if any;

(7) that the redemption is for a sinking fund, if such is the case;

(8) that, unless otherwise specified in such notice, Bearer Securities of any series, if any, surrendered for redemption must be accompanied by all coupons maturing subsequent to the Redemption Date or the amount of any such missing coupon or coupons will be deducted from the Redemption Price unless security or indemnity satisfactory to the Issuer, the Guarantor, if applicable, the Trustee and any Paying Agent is furnished; and

(9) if Bearer Securities of any series are to be redeemed and any Registered Securities of such series are not to be redeemed, and if such Bearer Securities may be exchanged for Registered Securities not subject to redemption on such Redemption Date pursuant to Section 305 or otherwise, the last date, as determined by the Issuer, on which such exchanges may be made.

Notice of redemption of Securities to be redeemed at the election of the Issuer shall be given by the Issuer or, at the request of the Issuer, by the Trustee in the name and at the expense of the Issuer.

SECTION 1105 Deposit of Redemption Price.

On or prior to 10:00 a.m. (New York, New York time) on any Redemption Date, the Issuer shall deposit with the Trustee or with a Paying Agent (or, if the Issuer is acting as its own Paying Agent, segregate and hold in trust as provided in Section 1003) an amount of money in the Currency in which the Securities of such series are payable (except as otherwise specified pursuant to Section 301 for the Securities of such series and except, if applicable, as provided in Sections 312(b), 312(d) and 312(e)) sufficient to pay the Redemption Price of, and accrued interest, if any, on, all the Securities which are to be redeemed on that date.

SECTION 1106 Securities Payable on Redemption Date.

Notice of redemption having been given as aforesaid, the Securities so to be redeemed shall, on the Redemption Date, become due and payable at the Redemption Price therein specified in the Currency in which the Securities of such series are payable (except as otherwise specified pursuant to Section 301 for the Securities of such series and except, if applicable, as provided in Sections 312(b), 312(d) and 312(e)) (together with accrued interest, if any, to the Redemption Date), and from and after such date (unless the Issuer shall default in the payment of the Redemption Price and accrued interest, if any) such Securities shall, if the same were interest bearing, cease to bear interest and the coupons for such interest appertaining to any Bearer Securities so to be redeemed, except to the extent provided below, shall be void. Upon surrender of any such Security for redemption in accordance with said notice, together with all coupons, if any, appertaining thereto maturing after the Redemption Date, such Security shall be paid by the Issuer at the Redemption Price, together with accrued interest, if any, to the Redemption Date; provided, however, that installments of interest on Bearer Securities whose Stated Maturity is on or prior to the Redemption Date shall be payable only at an office or agency located outside the United States (except as otherwise provided in Section 1002) and, unless otherwise specified as contemplated by Section 301, only upon presentation and surrender of coupons for such interest; and provided further, that installments of interest on Registered Securities whose Stated Maturity is on or prior to the Redemption Date shall be payable to the Holders of such Securities, or one or more Predecessor Securities, registered as such at the close of business on the relevant Record Dates according to their terms and the provisions of Section 307.

If any Bearer Security surrendered for redemption shall not be accompanied by all appurtenant coupons maturing after the Redemption Date, such Security may be paid after deducting from the Redemption Price an amount equal to the face amount of all such missing coupons, or the surrender of such missing coupon or coupons may be waived by the Issuer, the Guarantor, if applicable, and the Trustee if there be furnished to them such security or indemnity as they may require to save each of them and any Paying Agent harmless. If thereafter the Holder of such Security shall surrender to the Trustee or any Paying Agent any such missing coupon in respect of which a deduction shall have been made from the Redemption Price, such Holder shall be entitled to receive the amount so deducted; provided, however, that interest represented by coupons shall be payable only at an office or agency located outside the United States (except as otherwise provided in Section 1002) and, unless otherwise specified as contemplated by Section 301, only upon presentation and surrender of those coupons.

If any Security called for redemption shall not be so paid upon surrender thereof for redemption, the principal, and premium, if any, shall, until paid, bear interest from the Redemption Date at the rate of interest or Yield to Maturity (in the case of Original Issue Discount Securities) set forth in such Security.

SECTION 1107 Securities Redeemed in Part.

Any Security which is to be redeemed only in part (pursuant to the provisions of this Article or of Article Twelve) shall be surrendered at a Place of Payment therefor (with, if the Issuer, the Guarantor, if applicable, or the Trustee so requires, due endorsement by, or a written instrument of transfer in form satisfactory to the Issuer, the Guarantor (if applicable) and the Trustee duly executed by, the Holder thereof or such Holder's attorney duly authorized in writing), and the Issuer shall execute, and the Trustee shall authenticate and deliver to the Holder of such Security without service charge, a new Security or Securities of the same series, of any authorized denomination as requested by such Holder, in aggregate principal amount equal to and in exchange for the unredeemed portion of the principal of the Security so surrendered.

SECTION 1108 Tax Redemption.

Unless otherwise specified pursuant to Section 301, the Issuer of a series of Securities shall have the right to redeem, at any time, the Securities of such series, in whole but not in part, at a redemption price equal to the principal amount thereof together with accrued and unpaid interest to the date fixed for redemption, upon the giving of a notice as described below, if (1) the Issuer (or its successor) determines that (a) as a result of (i) any change in or amendment, including any announced prospective change, to the laws (or any regulations or rulings promulgated thereunder) of Canada (or the jurisdiction of organization of the successor of the Issuer) or of any political subdivision or taxing authority thereof or therein affecting taxation, or (ii) any amendment to or change in the application or interpretation of such laws, regulations or rulings by any legislative body, court of competent jurisdiction, government agency or regulatory authority (including the enactment of any legislation and the publication of any judicial decision or regulatory determination), which change or amendment is announced or becomes effective on or after a date specified pursuant to Section 301, if any date is so specified (or the date a Person organized in a jurisdiction other than Canada or the United States becomes the successor of the Issuer), the Issuer has or will become obligated to pay, on the next succeeding date on which interest is due, Additional Amounts pursuant to Section 1005 or (b) on or after a date specified pursuant to Section 301, if any date is so specified (or the date a Person organized in a jurisdiction other than Canada or the United States becomes the successor of the Issuer), any action has been taken by any taxing authority of, or any decision has been rendered by a court of competent jurisdiction in, Canada (or the jurisdiction of organization of the successor of the Issuer) or any political subdivision or taxing authority thereof or therein, including any of those actions specified in (a) above, whether or not such action was taken or decision was rendered with respect to the Issuer, or any change, amendment, application or interpretation shall be officially proposed, which, in any such case, in the Opinion of Counsel to the Issuer, will result in the Issuer or the Guarantor, if applicable, becoming obligated to pay, on the next succeeding date on which interest is due, Additional Amounts with respect to any Security of such series and (2) in any such case, the Issuer or the Guarantor, if applicable, in its business judgment determines that such obligation cannot be avoided by the use of reasonable measures available to the Issuer or the Guarantor, as the case may be; provided, however, that (i) no such notice of redemption may be given earlier than 60 or later than 30 days prior to the earliest date on which the Issuer or the Guarantor would be obligated to pay such Additional Amounts were a payment in respect of the Securities then due, and (ii) at the time such notice of redemption is given, such obligation to pay such Additional Amounts remains in effect.

ARTICLE TWELVE
SINKING FUNDS

SECTION 1201 Applicability of Article.

Retirements of Securities of any series pursuant to any sinking fund shall be made in accordance with the terms of such Securities and (except as otherwise specified as contemplated by Section 301 for Securities of any series) in accordance with this Article.

The minimum amount of any sinking fund payment provided for by the terms of Securities of any series is herein referred to as a "mandatory sinking fund payment," and any payment in excess of such minimum amount provided for by the terms of Securities of any series is herein referred to as an "optional sinking fund payment." If provided for by the terms of Securities of any series, the cash amount of any mandatory sinking fund payment may be subject to reduction as provided in Section 1202. Each sinking fund payment shall be applied to the redemption of Securities of any series as provided for by the terms of Securities of such series.

SECTION 1202 Satisfaction of Sinking Fund Payments with Securities.

Subject to Section 1203, in lieu of making all or any part of any mandatory sinking fund payment with respect to any Securities of a series in cash, the applicable Issuer may at its option (1) deliver to the Trustee Outstanding Securities of a series (other than any previously called for redemption) theretofore purchased or otherwise acquired by the Issuer together in the case of any Bearer Securities of such series with all unmatured coupons appertaining thereto, and/or (2) receive credit for the principal amount of Securities of such series which have been previously delivered to the Trustee by the Issuer or for Securities of such series which have been redeemed either at the election of the Issuer pursuant to the terms of such Securities or through the application of permitted optional sinking fund payments pursuant to the terms of such Securities, in each case in satisfaction of all or any part of any mandatory sinking fund payment with respect to the Securities of the same series required to be made pursuant to the terms of such Securities as provided for by the terms of such series; provided, however, that such Securities have not been previously so credited. Such Securities shall be received and credited for such purpose by the Trustee at the Redemption Price specified in such Securities for redemption through operation of the sinking fund and the amount of such mandatory sinking fund payment shall be reduced accordingly.

SECTION 1203 Redemption of Securities for Sinking Fund.

Not less than 60 days prior to each sinking fund payment date for any series of Securities, the Issuer will deliver to the Trustee an Officers' Certificate specifying the amount of the next ensuing sinking fund payment for that series pursuant to the terms of that series, the portion thereof, if any, which is to be satisfied by payment of cash in the Currency in which the Securities of such series are payable (except as otherwise specified pursuant to Section 301 for the Securities of such series and except, if applicable, as provided in Sections 312(b), 312(d) and 312(e)) and the portion thereof, if any, which is to be satisfied by delivering or crediting Securities of that series pursuant to Section 1202 (which Securities will, if not previously delivered, accompany such certificate) and whether the Issuer intends to exercise its right to make a permitted optional sinking fund payment with respect to such series. Such certificate shall be irrevocable and upon its delivery the Issuer shall be obligated to make the cash payment or payments therein referred to, if any, on or before the next succeeding sinking fund payment date. In the case of the failure of the Issuer to deliver such certificate, the sinking fund payment due on the next succeeding sinking fund payment date for that series shall be paid entirely in cash and shall be sufficient to redeem the principal amount of such Securities subject to a mandatory sinking fund payment without the option to deliver or credit Securities as provided in Section 1202 and without the right to make any optional sinking fund payment, if any, with respect to such series.

Not more than 60 days before each such sinking fund payment date the Trustee shall select the Securities to be redeemed upon such sinking fund payment date in the manner specified in Section 1103 and cause notice of the redemption thereof to be given in the name of and at the expense of the Issuer, in the manner provided in Section 1104. Such notice having been duly given, the redemption of such Securities shall be made upon the terms and in the manner stated in Sections 1106 and 1107.

On or prior to 10:00 a.m. (New York, New York time) on any sinking fund payment date, the Issuer shall pay to the Trustee or a Paying Agent (or, if the Issuer is acting as its own Paying Agent, segregate and hold in trust as provided in Section 1003) in cash a sum equal to any interest that will accrue to the date fixed for redemption of Securities or portions thereof to be redeemed on such sinking fund payment date pursuant to this Section 1203.

Notwithstanding the foregoing, with respect to a sinking fund for any series of Securities, if at any time the amount of cash to be paid into such sinking fund on the next succeeding sinking fund payment date, together with any unused balance of any preceding sinking fund payment or payments for such series, does not exceed in the aggregate $100,000, the Trustee, unless requested by the Issuer shall not give the next succeeding notice of the redemption of Securities of such series through the operation of the sinking fund. Any such unused balance of moneys deposited in such sinking fund shall be added to the sinking fund payment for such series to be made in cash on the next succeeding sinking fund payment date or, at the request of the Issuer, shall be applied at any time or from time to time to the purchase of Securities of such series, by public or private purchase, in the open market or otherwise, at a purchase price for such Securities (excluding accrued interest and brokerage commissions, for which the Trustee or any Paying Agent will be reimbursed by the Issuer) not in excess of the principal amount thereof.

ARTICLE THIRTEEN
REPAYMENT AT OPTION OF HOLDERS

SECTION 1301 Applicability of Article.

Repayment of Securities of any series before their Stated Maturity at the option of Holders thereof shall be made in accordance with the terms of such Securities and (except as otherwise specified as contemplated by Section 301 for Securities of any series) in accordance with this Article.

SECTION 1302 Repayment of Securities.

Securities of any series subject to repayment in whole or in part at the option of the Holders thereof will, unless otherwise provided in the terms of such Securities, be repaid at a price equal to the principal amount thereof, together with interest, if any, thereon accrued to the Repayment Date specified in or pursuant to the terms of such Securities. The Issuer of any such series hereby covenants that on or before the Repayment Date it will deposit with the Trustee or with a Paying Agent (or, if the Issuer is acting as its own Paying Agent, segregate and hold in trust as provided in Section 1003) an amount of money in the Currency in which the Securities of such series are payable (except as otherwise specified pursuant to Section 301 for the Securities of such series and except, if applicable, as provided in Sections 312(b), 312(d) and 312(e)) sufficient to pay the principal (or, if so provided by the terms of the Securities of any series, a percentage of the principal) of and (except if the Repayment Date shall be an Interest Payment Date) accrued interest, if any, on, all the Securities or portions thereof, as the case may be, to be repaid on such date.

SECTION 1303 Exercise of Option.

Securities of any series subject to repayment at the option of the Holders thereof will contain an "Option to Elect Repayment" form on the reverse of such Securities. To be repaid at the option of the Holder, any Security so providing for such repayment, with the "Option to Elect Repayment" form on the reverse of such Security duly completed by the Holder (or by the Holder's attorney duly authorized in writing), must be received by the Issuer at the Place of Payment therefor specified in the terms of such Security (or at such other place or places of which the Issuer shall from time to time notify the Holders of such Securities) not earlier than 45 days nor later than 30 days prior to the Repayment Date. If less than the entire principal amount of such Security is to be repaid in accordance with the terms of such Security, the principal amount of such Security to be repaid, in increments of the minimum denomination for Securities of such series, and the denomination or denominations of the Security or Securities to be issued to the Holder for the portion of the principal amount of such Security surrendered that is not to be repaid, must be specified. The principal amount of any Security providing for repayment at the option of the Holder thereof may not be repaid in part if, following such repayment, the unpaid principal amount of such Security would be less than the minimum authorized denomination of Securities of the series of which such Security to be repaid is a part. Except as otherwise may be provided by the terms of any Security providing for repayment at the option of the Holder thereof, exercise of the repayment option by the Holder shall be irrevocable unless waived by the Issuer.

SECTION 1304 When Securities Presented for Repayment Become Due and Payable.

If Securities of any series providing for repayment at the option of the Holders thereof shall have been surrendered as provided in this Article and as provided by or pursuant to the terms of such Securities, such Securities or the portions thereof, as the case may be, to be repaid shall become due and payable and shall be paid by the Issuer on the Repayment Date therein specified, and on and after such Repayment Date (unless the Issuer and, if applicable, the Guarantor shall default in the payment of such Securities on such Repayment Date) such Securities shall, if the same were interest bearing, cease to bear interest and the coupons for such interest appertaining to any Bearer Securities so to be repaid, except to the extent provided below, shall be void. Upon surrender of any such Security for repayment in accordance with such provisions, together with all coupons, if any, appertaining thereto maturing after the Repayment Date, the principal amount of such Security so to be repaid shall be paid by the Issuer, together with accrued interest, if any, to the Repayment Date; provided, however, that coupons whose Stated Maturity is on or prior to the Repayment Date shall be payable only at an office or agency located outside the United States (except as otherwise provided in Section 1002) and, unless otherwise specified pursuant to Section 301, only upon presentation and surrender of such coupons; and provided further, that, in the case of Registered Securities, installments of interest, if any, whose Stated Maturity is on or prior to the Repayment Date shall be payable to the Holders of such Securities, or one or more Predecessor Securities, registered as such at the close of business on the relevant Record Dates according to their terms and the provisions of Section 307.

If any Bearer Security surrendered for repayment shall not be accompanied by all appurtenant coupons maturing after the Repayment Date, such Security may be paid after deducting from the amount payable therefor as provided in Section 1302 an amount equal to the face amount of all such missing coupons, or the surrender of such missing coupon or coupons may be waived by the Issuer, the Guarantor (if applicable) and the Trustee if there be furnished to them such security or indemnity as they may require to save each of them and any Paying Agent harmless. If thereafter the Holder of such Security shall surrender to the Trustee or any Paying Agent any such missing coupon in respect of which a deduction shall have been made as provided in the preceding sentence, such Holder shall be entitled to receive the amount so deducted; provided, however, that interest represented by coupons shall be payable only at an office or agency located outside the United States (except as otherwise provided in Section 1002) and, unless otherwise specified as contemplated by Section 301, only upon presentation and surrender of those coupons.

If the principal amount of any Security surrendered for repayment shall not be so repaid upon surrender thereof, such principal amount (together with interest, if any, thereon accrued to such Repayment Date) shall, until paid, bear interest from the Repayment Date at the rate of interest or Yield to Maturity (in the case of Original Issue Discount Securities) set forth in such Security.

SECTION 1305 Securities Repaid in Part.

Upon surrender of any Registered Security which is to be repaid in part only, the Issuer shall execute and the Trustee shall authenticate and deliver to the Holder of such Security, without service charge and at the expense of the Issuer, a new Registered Security or Securities of the same series, of any authorized denomination specified by the Holder, in an aggregate principal amount equal to and in exchange for the portion of the principal of such Security so surrendered which is not to be repaid.

ARTICLE FOURTEEN
DEFEASANCE AND COVENANT DEFEASANCE

SECTION 1401 Issuer's Option to Effect Defeasance or Covenant Defeasance.

Except as otherwise specified as contemplated by Section 301 for Securities of any series, the provisions of this Article Fourteen shall apply to each series of Securities, and the Issuer of any series of Securities may, at its option, effect defeasance (as defined below) of the Securities of or within a series under Section 1402, or covenant defeasance (as defined below) of or within a series under Section 1403 in accordance with the terms of such Securities and in accordance with this Article.

SECTION 1402 Defeasance and Discharge.

Upon the exercise by the Issuer of a series of Securities of the above option applicable to this Section with respect to any Securities of or within such series, the Issuer or the Guarantor, if applicable, shall be deemed to have been discharged from its obligations with respect to such Outstanding Securities and any related coupons on the date the conditions set forth in Section 1404 are satisfied (hereinafter, "defeasance"). For this purpose, such defeasance means that the Issuer or the Guarantor, as the case may be, shall be deemed to have paid and discharged the entire indebtedness represented by such Outstanding Securities and any related coupons, which shall thereafter be deemed to be "Outstanding" only for the purposes of Section 1405 and the other Sections of this Indenture referred to in (a) and (b) below, and to have satisfied all its other obligations under such Securities and the Guarantees and any related coupons and this Indenture insofar as such Securities and the Guarantees and any related coupons are concerned (and the Trustee, at the expense of the Issuer, shall execute proper instruments acknowledging the same), except for the following which shall survive until otherwise terminated or discharged hereunder: (a) the rights of Holders of such Outstanding Securities and any related coupons to receive, solely from the trust fund described in Section 1404 and as more fully set forth in such Section, payments in respect of the principal of, and premium, if any, and interest, if any, on such Securities and any related coupons when such payments are due, (b) the Issuer's and, if applicable, the Guarantor's obligations with respect to such Securities under Sections 303, 304, 305, 306, 1002 and 1003 and with respect to the payment of Additional Amounts, if any, on such Securities as contemplated by Section 1005, (c) the rights, powers, trusts, duties and immunities of the Trustee hereunder and the obligations of Petro-Canada and the Partnership under Section 607, and (d) this Article Fourteen. Subject to compliance with this Article Fourteen, the Issuer may exercise its option under this Section 1402 notwithstanding the prior exercise of its option under Section 1403 with respect to such Securities and any related coupons.

SECTION 1403 Covenant Defeasance.

Upon the exercise by the Issuer of a series of Securities of the above option applicable to this Section with respect to any Securities of or within such series, the Issuer shall be released from its obligations under Section 803 and Sections 1006 through 1008 inclusive and, if specified pursuant to Section 301, its obligations under any other covenant, with respect to such Outstanding Securities and any related coupons and Guarantees on and after the date the conditions set forth in Section 1404 are satisfied (hereinafter, "covenant defeasance"), and such Securities and any related coupons and Guarantees shall thereafter be deemed not to be "Outstanding" for the purposes of any direction, waiver, consent or declaration or Act of Holders (and the consequences of any thereof) in connection with such covenants, but shall continue to be deemed "Outstanding" for all other purposes hereunder. For this purpose, such covenant defeasance means that, with respect to such Outstanding Securities and any related coupons, the Issuer and, if applicable, the Guarantor may omit to comply with and shall have no liability in respect of any term, condition or limitation set forth in any such covenant, whether directly or indirectly, by reason of any reference elsewhere herein to any such covenant or by reason of reference in any such covenant to any other provision herein or in any other document and such omission to comply shall not constitute a Default or an Event of Default under Section 501(4) or otherwise, as the case may be, but, except as specified above, the remainder of this Indenture and such Securities and any related coupons shall be unaffected thereby.

SECTION 1404 Conditions to Defeasance or Covenant Defeasance.

The following shall be the conditions to application of either Section 1402 or Section 1403 to any Outstanding Securities of or within a series and any related coupons:

(1) The Issuer shall irrevocably have deposited or caused to be deposited with the Trustee (or another trustee satisfying the requirements of Section 608 who shall agree to comply with the provisions of this Article Fourteen applicable to it) as trust funds in trust for the purpose of making the following payments, specifically pledged as security for, and dedicated solely to, the benefit of the Holders of such Securities and any related coupons, (a) an amount (in such Currency in which such Securities and any related coupons are then specified as payable at Stated Maturity), or (b) Government Obligations applicable to such Securities (determined on the basis of the Currency in which such Securities are then specified as payable at Stated Maturity) which through the scheduled payment of principal and interest in respect thereof in accordance with their terms will provide, not later than one day before the due date of any payment of principal of, and premium, if any, and interest, if any, under such Securities and any related coupons, money in an amount, or (c) a combination thereof, sufficient, in the opinion of a nationally recognized firm of independent public accountants (which shall be expressed in a written certification thereof delivered to the Issuer, that is attached to an Officers' Certificate delivered to the Trustee), to pay and discharge, and which shall be applied by the Trustee (or other qualifying trustee) to pay and discharge, (i) the principal of, and premium, if any, and interest, if any, on such Outstanding Securities and any related coupons on the Stated Maturity (or Redemption Date, if applicable) of such principal, and premium, if any, or installment of interest, if any, and (ii) any mandatory sinking fund payments or analogous payments applicable to such Outstanding Securities and any related coupons on the day on which such payments are due and payable in accordance with the terms of this Indenture and of such Securities and any related coupons; provided that the Trustee shall have been irrevocably instructed to apply such money or the proceeds of such Government Obligations to said payments with respect to such Securities and any related coupons. Before such a deposit, the Issuer may give to the Trustee, in accordance with Section 1102 hereof, a notice of its election to redeem all or any portion of such Outstanding Securities at a future date in accordance with the terms of the Securities of such series and Article Eleven hereof, which notice shall be irrevocable. Such irrevocable redemption notice, if given, shall be given effect in applying the foregoing.

(2) No Default or Event of Default with respect to such Securities or any related coupons shall have occurred and be continuing on the date of such deposit or, insofar as paragraphs (6) and (7) of Section 501 are concerned, at any time during the period ending on the 91st day after the date of such deposit (it being understood that this condition shall not be deemed satisfied until the expiration of such period).

(3) Such defeasance or covenant defeasance shall not result in a breach or violation of, or constitute a default under, this Indenture or any other material agreement or instrument to which the Issuer or, if applicable, the Guarantor, is a party or by which it is bound.

(4) In the case of an election under Section 1402, the Issuer shall have delivered to the Trustee an Opinion of Counsel in the United States stating that (x) the Issuer has received from, or there has been published by, the Internal Revenue Service a ruling, or (y) since the date of execution of this Indenture, there has been a change in the applicable U.S. federal income tax law, in either case to the effect that, and based thereon such opinion shall confirm that, the Holders of such Outstanding Securities and any related coupons will not recognize income, gain or loss for federal income tax purposes as a result of such defeasance and will be subject to federal income tax on the same amounts, in the same manner and at the same times as would have been the case if such defeasance had not occurred.

(5) Notwithstanding any other provisions of this Section, such defeasance or covenant defeasance shall be effected in compliance with any additional or substitute terms, conditions or limitations in connection therewith pursuant to Section 301.

(6) The Issuer shall have delivered to the Trustee an Officers' Certificate and an Opinion of Counsel, each stating that all conditions precedent provided for relating to either the defeasance under Section 1402 or the covenant defeasance under Section 1403 (as the case may be) have been complied with.

(7) In the case of an election under Section 1403, the Issuer shall have delivered to the Trustee an Opinion of Counsel in the United States to the effect that the Holders of such Outstanding Securities will not recognize income, gain or loss for U.S. federal income tax purposes as a result of such covenant defeasance and will be subject to U.S. federal income tax on the same amounts, in the same manner and at the same times as would have been the case if such covenant defeasance had not occurred.

(8) The Issuer has delivered to the Trustee either an Opinion of Counsel in Canada or a ruling from Canada Revenue Agency to the effect that the Holders of such Outstanding Securities will not recognize income, gain or loss for Canadian federal or provincial income tax or other tax purpose as a result of such defeasance or covenant defeasance and will be subject to Canadian federal or provincial income tax and other tax on the same amounts, in the same manner and at the same times as would have been the case had such defeasance not occurred (and for the purposes of such opinion, such Canadian counsel shall assume that Holders of the Securities include Holders who are not resident in Canada).

(9) Each of the Issuer and, if applicable, the Guarantor is not an "insolvent person" within the meaning of the Bankruptcy and Insolvency Act (Canada) on the date of such deposit or at any time during the period ending on the 91st day after the date of such deposit (it being understood that this condition shall not be deemed satisfied until the expiration of such period).

(10) The Issuer has delivered to the Trustee an Opinion of Counsel to the effect that such deposit shall not cause the Trustee or the trust so created to be subject to the Investment Company Act of 1940, as amended.

SECTION 1405 Deposited Money and Government Obligations to Be Held in Trust; Other Miscellaneous Provisions.

Subject to the provisions of the last paragraph of Section 1003, all money and Government Obligations (or other property as may be provided pursuant to Section 301) (including the proceeds thereof) deposited with the Trustee (or other qualifying trustee, collectively for purposes of this Section 1405, the "Trustee") pursuant to Section 1404 in respect of such Outstanding Securities and any related coupons shall be held in trust and applied by the Trustee, in accordance with the provisions of such Securities and any related coupons and this Indenture, to the payment, either directly or through any Paying Agent (including an Issuer acting as its own Paying Agent) as the Trustee may determine, to the Holders of such Securities and any related coupons of all sums due and to become due thereon in respect of principal, and premium, if any, and interest, if any, but such money need not be segregated from other funds except to the extent required by law.

Unless otherwise specified with respect to any Security pursuant to Section 301, if, after a deposit referred to in Section 1404(1) has been made, (a) the Holder of a Security in respect of which such deposit was made is entitled to, and does, elect pursuant to Section 312(b) or the terms of such Security to receive payment in a Currency other than that in which the deposit pursuant to Section 1404(1) has been made in respect of such Security, or (b) a Conversion Event occurs as contemplated in Section 312(d) or 312(e) or by the terms of any Security in respect of which the deposit pursuant to Section 1404(1) has been made, the indebtedness represented by such Security and any related coupons shall be deemed to have been, and will be, fully discharged and satisfied through the payment of the principal of, and premium, if any, and interest, if any, on such Security as they become due out of the proceeds yielded by converting (from time to time as specified below in the case of any such election) the amount or other property deposited in respect of such Security into the Currency in which such Security becomes payable as a result of such election or Conversion Event based on the applicable Market Exchange Rate for such Currency in effect on the third Business Day prior to each payment date, except, with respect to a Conversion Event, for such Currency in effect (as nearly as feasible) at the time of the Conversion Event.

Either the Partnership or Petro-Canada shall pay and both shall jointly and severally indemnify the Trustee against any tax, fee or other charge imposed on or assessed against the Government Obligations deposited pursuant to Section 1404 or the principal and interest received in respect thereof other than any such tax, fee or other charge which by law is for the account of the Holders of such Outstanding Securities and any related coupons.

Anything in this Article Fourteen to the contrary notwithstanding, the Trustee shall deliver or pay to the Issuer or the Guarantor, as applicable, from time to time upon Issuer Request any money or Government Obligations (or other property and any proceeds therefrom) held by it as provided in Section 1404 which, in the opinion of a nationally recognized firm of independent public accountants (evidenced by an Officers' Certificate) delivered to the Trustee, are in excess of the amount thereof which would then be required to be deposited to effect an equivalent defeasance or covenant defeasance, as applicable, in accordance with this Article.

SECTION 1406 Reinstatement.

If the Trustee or any Paying Agent is unable to apply any money in accordance with Section 1405 by reason of any order or judgment of any court or governmental authority enjoining, restraining or otherwise prohibiting such application, then the obligations of the Issuer of such Securities and, if applicable, of the Guarantor with respect to such Securities under this Indenture and such Securities and any related coupons or Guarantees shall be revived and reinstated as though no deposit had occurred pursuant to Section 1402 or 1403, as the case may be, until such time as the Trustee or Paying Agent is permitted to apply all such money in accordance with Section 1405; provided, however, that if the Issuer or the Guarantor, as applicable, makes any payment of principal of, or premium, if any, or interest, if any, on any such Security or any related coupon following the reinstatement of its obligations, the Issuer or the Guarantor, as applicable, shall be subrogated to the rights of the Holders of such Securities and any related coupons to receive such payment from the money held by the Trustee or Paying Agent.

ARTICLE FIFTEEN
MEETINGS OF HOLDERS OF SECURITIES

SECTION 1501 Purposes for Which Meetings May Be Called.

A meeting of Holders of one or more series of Securities may be called at any time and from time to time pursuant to this Article to make, give or take any request, demand, authorization, direction, notice, consent, waiver or other action provided by this Indenture to be made, given or taken by Holders of Securities of such series.

SECTION 1502 Call, Notice and Place of Meetings.

(a) The Trustee may at any time call a meeting of Holders of Securities of any series for any purpose specified in Section 1501, to be held at such time and at such place in New York, New York, in Calgary, Alberta or in London, England as the Trustee shall determine. Notice of every meeting of Holders of one or more series of Securities, setting forth the time and the place of such meeting and in general terms the action proposed to be taken at such meeting, shall be given, in the manner provided for in Section 106, not less than 21 nor more than 180 days prior to the date fixed for the meeting.

(b) In case at any time the Issuer of any series of Securities, pursuant to an Authorizing Resolution, or the Holders of at least 10% in principal amount of the Outstanding Securities of any series shall have requested the Trustee to call a meeting of the Holders of Securities of such series for any purpose specified in Section 1501, by written request setting forth in reasonable detail the action proposed to be taken at the meeting, and the Trustee shall not have made the first publication of the notice of such meeting within 21 days after receipt of such request or shall not thereafter proceed to cause the meeting to be held as provided herein, then the Issuer or the Holders of Securities of such series in the amount above specified, as the case may be, may determine the time and the place in New York, New York, in Calgary Alberta or in London, England for such meeting and may call such meeting for such purposes by giving notice thereof as provided in paragraph (a) of this Section 1502.

SECTION 1503 Persons Entitled to Vote at Meetings.

To be entitled to vote at any meeting of Holders of Securities of any series, a Person shall be (1) a Holder of one or more Outstanding Securities of such series, or (2) a Person appointed by an instrument in writing as proxy for a Holder or Holders of one or more Outstanding Securities of such series by such Holder of Holders. The only Persons who shall be entitled to be present or to speak at any meeting of Holders of Securities of any series shall be the Person entitled to vote at such meeting and their counsel, any representatives of the Trustee and its counsel and any representatives of the Partnership or Petro-Canada and their counsel.

SECTION 1504 Quorum; Action.

The Persons entitled to vote a majority in principal amount of the Outstanding Securities of a series shall constitute a quorum for a meeting of Holders of Securities of such series; provided, however, that, if any action is to be taken at such meeting with respect to a consent or waiver which this Indenture expressly provides may be given by the Holders of not less than a specified percentage in principal amount of the Outstanding Securities of a series, the Persons entitled to vote such specified percentage in principal amount of the Outstanding Securities of such series shall constitute a quorum. In the absence of a quorum within 30 minutes of the time appointed for any such meeting, the meeting shall, if convened at the request of Holders of Securities of such series, be dissolved. In any other case the meeting may be adjourned for a period of not less than 10 days as determined by the chairman of the meeting prior to the adjournment of such meeting. In the absence of a quorum at any such adjourned meeting, such adjourned meeting may be further adjourned for a period of not less than 10 days as determined by the chairman of the meeting prior to the adjournment of such adjourned meeting. Notice of the reconvening of any adjourned meeting shall be given as provided in Section 1502(a), except that such notice need be given only once not less than five days prior to the date on which the meeting is scheduled to be reconvened. Notice of the reconvening of any adjourned meeting shall state expressly the percentage, as provided above, of the principal amount of the Outstanding Securities of such series which shall constitute a quorum.

Subject to the foregoing, at the reconvening of any meeting adjourned for lack of a quorum, the Persons entitled to vote 25% in principal amount of the Outstanding Securities at the time shall constitute a quorum for the taking of any action set forth in the notice of the original meeting.

Except as limited by the proviso to Section 902, any resolution presented to a meeting or adjourned meeting duly reconvened at which a quorum is present as aforesaid may be adopted by the affirmative vote of the Holders of not less than a majority in principal amount of the Outstanding Securities of such series who have cast their votes; provided, however, that, except as limited by the proviso to Section 902, any resolution with respect to any request, demand, authorization, direction, notice, consent, waiver or other action which this Indenture expressly provides may be made, given or taken by the Holders of a specified percentage, which is less than a majority, in principal amount of the Outstanding Securities of a series may be adopted at a meeting or an adjourned meeting duly reconvened and at which a quorum is present as aforesaid by the affirmative vote of the Holders of not less than such specified percentage in principal amount of the Outstanding Securities of such series.

Any resolution passed or decision taken at any meeting of Holders of Securities of any series duly held in accordance with this Section shall be binding on all the Holders of Securities of such series and the related coupons, whether or not present or represented at the meeting.

Notwithstanding the foregoing provisions of this Section 1504, if any action is to be taken at a meeting of Holders of Securities of any series with respect to any request, demand, authorization, direction, notice, consent, waiver or other action that this Indenture expressly provides may be made, given or taken by the Holders of a specified percentage in principal amount of all Outstanding Securities affected thereby, or of the Holders of such series and one or more additional series:

(A): there shall be no minimum quorum requirement for such meeting; and
(B): the principal amount of the Outstanding Securities of such series that vote in favor of such request, demand, authorization, direction, notice, consent, waiver or other action shall be taken into account in determining whether such request, demand, authorization, direction, notice, consent, waiver or other action has been made, given or taken under this Indenture.

SECTION 1505 Determination of Voting Rights; Conduct and Adjournment of Meetings.

(a) Notwithstanding any provisions of this Indenture, the Trustee may make such reasonable regulations as it may deem advisable for any meeting of Holders of Securities of a series in regard to proof of the holding of Securities of such series and of the appointment of proxies and in regard to the appointment and duties of inspectors of votes, the submission and examination of proxies, certificates and other evidence of the right to vote, and such other matters concerning the conduct of the meeting as it shall deem appropriate. Except as otherwise permitted or required by any such regulations, the holding of Securities shall be proved in the manner specified in Section 104 and the appointment of any proxy shall be proved in the manner specified in Section 104 or by having the signature of the Person executing the proxy witnessed or guaranteed by any trust company, bank or banker authorized by Section 104 to certify to the holding of Bearer Securities. Such regulations may provide that written instruments appointing proxies, regular on their face, may be presumed valid and genuine without the proof specified in Section 104 or other proof.

(b) The Trustee shall, by an instrument in writing, appoint a temporary chairman of the meeting, unless the meeting shall have been called by the Issuer or by Holders of Securities as provided in Section 1502(b), in which case the Issuer or the Holders of Securities of the series calling the meeting, as the case may be, shall in like manner appoint a temporary chairman. A permanent chairman and a permanent secretary of the meeting shall be elected by vote of the Persons entitled to vote a majority in principal amount of the Outstanding Securities of such series represented at the meeting.

(c) At any meeting, each Holder of a Security of such series or proxy shall be entitled to one vote for each $1,000 principal amount of Outstanding Securities of such series held or represented by him (determined as specified in the definition of "Outstanding" in Section 101); provided, however, that no vote shall be cast or counted at any meeting in respect of any Security challenged as not Outstanding and ruled by the chairman of the meeting to be not Outstanding. The chairman of the meeting shall have no right to vote, except as a Holder of a Security of such series or proxy.

(d) Any meeting of Holders of Securities of any series duly called pursuant to Section 1502 at which a quorum is present may be adjourned from time to time by Persons entitled to vote a majority in principal amount of the Outstanding Securities of such series represented at the meeting; and the meeting may be held as so adjourned without further notice.

SECTION 1506 Counting Votes and Recording Action of Meetings.

The vote upon any resolution submitted to any meeting of Holders of Securities of any series shall be by written ballots on which shall be subscribed the signatures of the Holders of Securities of such series or of their representatives by proxy and the principal amounts and serial numbers, if any, of the Outstanding Securities of such series held or represented by them. The permanent chairman of the meeting shall appoint two inspectors of votes who shall count all votes cast at the meeting for or against any resolution and who shall make and file with the secretary of the meeting their verified written reports in duplicate of all votes cast at the meeting. A record, at least in duplicate, of the proceedings of each meeting of Holders of Securities of any series shall be prepared by the secretary of the meeting and there shall be attached to said record the original reports of the inspectors of votes on any vote by ballot taken thereat and affidavits by one or more Persons having knowledge of the facts setting forth a copy of the notice of the meeting and showing that said notice was given as provided in Section 1502 and, if applicable, Section 1504. Each copy shall be signed and verified by the affidavits of the permanent chairman and secretary of the meeting and one such copy shall be delivered to the Issuer and, if applicable, the Guarantor, and another to the Trustee to be preserved by the Trustee, the latter to have attached thereto the ballots voted at the meeting. Any record so signed and verified shall be conclusive evidence of the matters therein stated.

100

ARTICLE SIXTEEN
GUARANTEE OF SECURITIES.

SECTION 1601 Guarantee of Securities.

The Guarantor hereby fully, unconditionally and irrevocably guarantees to each Holder of a Security of each series issued by the Partnership to which this Article applies and authenticated and delivered by the Trustee and to the Trustee on behalf of each such Holder, the due and punctual payment of the principal of, premium, if any, and interest on such Security and the due and punctual payment of the sinking fund or analogous payments referred to therein, if any, together with any Additional Amounts payable with respect thereto when and as the same shall become due and payable, whether on the Stated Maturity, by declaration of acceleration, call for redemption or otherwise, according to the terms thereof and of this Indenture. In case of the failure of the Partnership, punctually to make any such payment of principal, premium, if any, or interest or any such sinking fund or analogous payment, the Guarantor hereby agrees to cause any such payment to be made punctually when and as the same shall become due and payable, whether on the Stated Maturity or by declaration of acceleration, call for redemption or otherwise, and as if such payment were made by the Partnership.

The Guarantor hereby agrees that its obligations hereunder shall be as if it were principal debtor and not merely guarantor, and shall be absolute and unconditional, irrespective of, and shall be unaffected by, any invalidity, irregularity or unenforceability of such Security or this Indenture, any failure to enforce the provisions of such Security or this Indenture, or any waiver, modification or indulgence granted to the Partnership with respect thereto, by the Holder of such Security or the Trustee or any other circumstance which may otherwise constitute a legal or equitable discharge of a guarantor; provided, however, that, notwithstanding the foregoing, no such waiver, modification or indulgence shall, without the consent of the Guarantor, increase the principal amount of such Security, or increase the interest rate thereon, or increase any premium payable upon redemption thereof, or alter the Stated Maturity thereof, or increase the principal amount of any Original Issue Discount Security that would except as provided herein be due and payable upon a declaration of acceleration or the Maturity thereof pursuant to Article Five of this Indenture. The Guarantor hereby waives diligence, presentment, demand of payment, filing or claims with a court in the event of merger or bankruptcy of the Partnership, any right to require a proceeding first against the Partnership, protest or notice with respect to such Security or the indebtedness evidenced thereby or with respect to any sinking fund or analogous payment required under such Security and all demands whatsoever, and covenants that this Guarantee will not be discharged except by payment in full of the principal of, premium, if any, and interest on such Security.

101

SECTION 1602 Execution and Delivery of Guarantees.

The Guarantees to be endorsed on the Securities of each series to which this Article applies shall include the terms of the guarantees set forth in Section 1601 and any other terms that may be set forth in the form established pursuant to Section 204 with respect to such series. The Guarantor hereby agrees to execute the Guarantees, in a form established pursuant to Section 204, to be endorsed on each Security authenticated and delivered by the Trustee. The Guarantees shall be executed on behalf of the Guarantor by its Chairman of the Board or its President or one of its Vice Presidents, under its corporate seal reproduced thereon attested by its Secretary or one of its Assistant Secretaries. The signature of any of these officers on the Guarantees may be manual or facsimile and may be imprinted or otherwise reproduced on the Guarantees.

Guarantees bearing the manual or facsimile signatures of individuals who were at any time the proper officers of the Guarantee shall bind the Guarantor, notwithstanding that such individuals or any of them have ceased to hold such offices prior to the authentication and delivery of the Securities upon which such Guarantees are endorsed or did not hold such offices at the date of such Securities.

The delivery of any Security by a Trustee, after the authentication thereof hereunder, shall constitute due delivery of the Guarantee endorsed thereon on behalf of the Guarantor. The Guarantor hereby agrees that its Guarantee set forth in Section 1601 shall remain in full force and effect notwithstanding any failure to endorse a Guarantee on any Security.

SECTION 1603 Counterparts.

This Indenture may be executed in any number of counterparts (either by facsimile or by original manual signature) each of which so executed shall be deemed to be an original, but all such counterparts shall together constitute but one and the same Indenture.

102

IN WITNESS WHEREOF, the parties hereto have caused this Indenture to be duly executed as of the day and year first above written.

		PETRO-CANADA
		By:	Name: Title:
		By:	Name: Title:
		PC FINANCIAL PARTNERSHIP by Petro-Canada, its managing partner
		By:	Name: Title:
		By:	Name: Title:
		THE BANK OF NEW YORK, as Trustee
		By:	Name: Title:
		By:	Name: Title:

103

EXHIBIT A

FORMS OF CERTIFICATION

EXHIBIT A-1

FORM OF CERTIFICATE TO BE GIVEN BY
PERSON ENTITLED TO RECEIVE BEARER SECURITY
OR TO OBTAIN INTEREST PAYABLE PRIOR
TO THE EXCHANGE DATE

CERTIFICATE

PETRO-CANADA and PC FINANCIAL PARTNERSHIP
[Insert title of sufficient description of Securities to be delivered]

This is to certify that as of the date hereof, and except as set forth below, the above captioned Securities held by you for our account (i) are owned by Person(s) (as defined in the indenture, dated November • , 2004 by and among Petro-Canada, PC Financial Partnership and The Bank of New York, as trustee), that are not citizens or residents of the United States, domestic partnerships, domestic corporations or any estate or trust the income of which is subject to United States federal income taxation regardless of its source ("United States Person(s)"), (ii) are owned by United States Person(s) that are (a) foreign branches of United States financial institutions (financial institutions, as defined in United States Treasury Regulations Section 2.165 12(c)(1)(v) are herein referred to as "financial institutions") purchasing for their own account or for resale, or (b) United States Person(s) who acquired the Securities through foreign branches of United States financial institutions and who hold the Securities through such United States financial institutions on the date hereof (and in either case (a) or (b), each such United States financial institution hereby agrees, on its own behalf or through its agent, that you may advise Petro-Canada or its agent that such financial institution will comply with the requirements of Section 165(j)(3)(A), (b) or (c) of the United States Internal Revenue Code of 1986, as amended, and the regulations thereunder), or (iii) are owned by United States or foreign financial institution(s) for purposes of resale during the restricted period (as defined in United States Treasury Regulations Section 1.163 5(c)(2)(i)(D)(7)), and, in addition, if the owner is a United States or foreign financial institution described in clause (iii) above (whether or not also described in clause (i) or (ii)), this is to further certify that such financial institution has not acquired the Securities for purposes of resale directly or indirectly to a United States Person or to a Person within the United States or its possessions.

As used herein, "United States" means the United States of America (including the states and the District of Columbia), its territories, its possessions and other areas subject to its jurisdiction.

We undertake to advise you promptly by tested telex on or prior to the date on which you intend to submit your certification relating to the above captioned Securities held by you for our account in accordance with your operating procedures if any applicable statement herein is not correct on such date, and in the absence of any such notification it may be assumed that this certification applies as of such date.

A-1-1

This certificate excepts and does not relate to [U.S.$][ ] of such interest in the above captioned Securities in respect of which we are not able to certify and as to which we understand an exchange for an interest in a permanent global Security or an exchange for and delivery of definitive Securities (or, if relevant, collection of any interest) cannot be made until we do so certify.

We understand that this certificate may be required in connection with certain tax legislation in the United States. If administrative or legal proceedings are commenced or threatened in connection with which this certificate is or would be relevant, we irrevocably authorize you to produce this certificate or a copy thereof to any interested party in such proceedings.

Dated:

Name:
Title:

A-1-2

EXHIBIT A-2

FORM OF CERTIFICATE TO BE GIVEN BY EUROCLEAR AND CLEARSTREAM
IN CONNECTION WITH THE EXCHANGE OF A PORTION OF A
TEMPORARY GLOBAL SECURITY OR TO OBTAIN INTEREST
PAYABLE PRIOR TO THE EXCHANGE DATE

CERTIFICATE

PETRO-CANADA and PC FINANCIAL PARTNERSHIP
[Insert title of sufficient description of Securities to be delivered]

This is to certify that based solely on written certifications that we have received in writing, by tested telex or by electronic transmission from each of the Persons (as defined in the Indenture, dated November • , 2004 by and among Petro-Canada, PC Financial Partnership and The Bank of New York, as trustee), appearing in our records as Persons entitled to a portion of the principal amount set forth below (our "Member Organizations") substantially in the form attached hereto, as of the date hereof, [U.S.$][ ] principal amount of the above captioned Securities (i) is owned by Person(s) that are not citizens or residents of the United States, domestic partnerships, domestic corporations or any estate or trust the income of which is subject to United States Federal income taxation regardless of its source ("United States Person(s)"), (ii) is owned by United States Person(s) that are (a) foreign branches of United States financial institutions (financial institutions, as defined in U.S. Treasury Regulations Section 1.165 12(c)(1)(v) are herein referred to as "financial institutions") purchasing for their own account or for resale, or (b) United States Person(s) who acquired the Securities through foreign branches of United States financial institutions and who hold the Securities through such United States financial institutions on the date hereof (and in either case (a) or (b), each such financial institution has agreed, on its own behalf or through its agent, that we may advise Petro-Canada or its agent that such financial institution will comply with the requirements of Section 165(j)(3)(A), (b) or (c) of the Internal Revenue Code of 1986, as amended, and the regulations thereunder), or (iii) is owned by United States or foreign financial institution(s) for purposes of resale during the restricted period (as defined in United States Treasury Regulations Section 1.163 5(c)(2)(i)(D)(7)) and, to the further effect, that financial institutions described in clause (iii) above (whether or not also described in clause (i) or (ii)) have certified that they have not acquired the Securities for purposes of resale directly or indirectly to a United States Person or to a Person within the United States or its possessions.

A-2-1

We further certify that (i) we are not making available herewith for exchange (or, if relevant, collection of any interest) any portion of the temporary global Security representing the above captioned Securities excepted in the above referenced certificates of Member Organizations and (ii) as of the date hereof we have not received any notification from any of our Member Organizations to the effect that the statements made by such Member Organizations with respect to any portion of the part submitted herewith for exchange (or, if relevant, collection of any interest) are no longer true and cannot be relied upon as of the date hereof.

We understand that this certification is required in connection with certain tax legislation in the United States. If administrative or legal proceedings are commenced or threatened in connection with which this certificate is or would be relevant, we irrevocably authorize you to produce this certificate or a copy thereof to any interested party in such proceedings.

Dated:

		[EUROCLEAR BANK S.A./N.A, as Operator of the Euroclear System] [CLEARSTREAM]
		By:

A-2-2

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