EX-23 2 ex23.htm EXHIBIT 23 ex23.htm
EXHIBIT 23

 
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
 
 
We consent to the incorporation by reference in Registration Statement No. 333-59290 of Frontier Oil Corporation on Form S-8 of our report dated June 26, 2008, appearing in the Annual Report on Form 11-K of Frontier Refining & Marketing Inc. and Subsidiaries Collectively Bargained Employees Retirement Savings Plan for the year ended December 31, 2007.
 
 
DELOITTE & TOUCHE LLP
 
 
Denver, Colorado
 
June 26, 2008