-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 Ru65MDxZasgsRplx7MCQfPUrbuUzesIWO4PQ/Pt/i32fByM3nLgq8CW3239S4Alc
 Iig9TiM23PdYFA3eyJ04bA==

<SEC-DOCUMENT>0001019718-04-000008.txt : 20040209
<SEC-HEADER>0001019718-04-000008.hdr.sgml : 20040209
<ACCEPTANCE-DATETIME>20040209163649
ACCESSION NUMBER:		0001019718-04-000008
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20031231
FILED AS OF DATE:		20040209

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			VALERO ENERGY CORP/TX
		CENTRAL INDEX KEY:			0001035002
		STANDARD INDUSTRIAL CLASSIFICATION:	PETROLEUM REFINING [2911]
		IRS NUMBER:				741828067
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		P.O. BOX 500
		CITY:			SAN ANTONIO
		STATE:			TX
		ZIP:			78292-0500
		BUSINESS PHONE:		2103702000

	MAIL ADDRESS:	
		STREET 1:		P.O. BOX 500
		CITY:			SAN ANTONIO
		STATE:			TX
		ZIP:			78292-0500

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			KLESSE WILLIAM R
		CENTRAL INDEX KEY:			0001019718

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13175
		FILM NUMBER:		04578414

	BUSINESS ADDRESS:	
		STREET 1:		P.O. BOX 500
		CITY:			SAN ANTONIO
		STATE:			TX
		ZIP:			78292-0500
		BUSINESS PHONE:		2103702000

	MAIL ADDRESS:	
		STREET 1:		P.O. BOX 500
		CITY:			SAN ANTONIO
		STATE:			TX
		ZIP:			78292-0500
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2003-12-31</periodOfReport>

    <issuer>
        <issuerCik>0001035002</issuerCik>
        <issuerName>VALERO ENERGY CORP/TX</issuerName>
        <issuerTradingSymbol>VLO</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001019718</rptOwnerCik>
            <rptOwnerName>KLESSE WILLIAM R</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>P.O. BOX 500</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SAN ANTONIO</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>78292-0500</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP and COO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, $.01 par value</value>
            </securityTitle>
            <transactionDate>
                <value>2003-12-31</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2430</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>46.11</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>113577</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The 113,577 amount stated is effective as of the date of this filing, February 9, 2004, and does not include 5,360.0151 shares held by the reporting person in a thrift plan.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>J. Stephen Gilbert, as Attorney-in-Fact for William R. Klesse</signatureName>
        <signatureDate>2004-02-09</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----