Frontier Oil Will Release Earnings on April 27; Host Conference Call April 30

Apr 20, 2001, 01:00 ET from Frontier Oil Corporation

    HOUSTON, April 20 /PRNewswire Interactive News Release/ -- Frontier Oil
 Corporation (NYSE:   FTO) expects to release results for the quarter ended
 March 31, 2001, on Friday, April 27, 2001.  The Company has scheduled a
 conference call for Monday, April 30, 2001 at 11:00 am EDT, 10:00 am CDT when
 management will present and discuss the first quarter results.
     To access the call, which is toll-free and open to the public, please dial
 (800) 475-8395 several minutes prior to the call and provide the conference
 call operator with the passcode "Frontier".  For those individuals outside the
 United States, please call (712) 271-0808.  A recorded replay of the entire
 call may be heard through May 9th by dialing (888) 568-0081.  Telephone access
 to the recorded replay will not require a passcode and is also toll-free.  In
 addition, the real-time conference call and a recorded replay will be webcast
 by PR Newswire.  To access the call or the replay via the Internet, go to
 Frontier Oil's website at www.frontieroil.com and register from the Investor
 Relations page of the site.
     The Company also announced the filing of a registration statement on Form
 S-8 to add the common stock of Frontier Oil Corporation as an investment
 option for the Company's two 401(k) plans.  No new shares of the Company's
 common stock are being issued in connection with this registration statement.
 The Company's common stock being registered may be purchased in the open
 market by the trustee of the 401(k) plans.
     Frontier operates a 110,000 barrel-per-day refinery located in El Dorado,
 Kansas, and a 41,000 barrel-per-day refinery located in Cheyenne, Wyoming, and
 markets its refined products principally along the eastern slope of the Rocky
 Mountains and in other neighboring plains states.
     This news release may include forward-looking statements concerning the
 Company.  These may include statements of plans or objectives for future
 operations, statements about future economic performance or assumptions or
 estimates.  The accuracy of these forward-looking statements is subject to a
 wide range of business risks and changes in circumstances that are described
 in our reports that are filed from time to time with the Securities and
 Exchange Commission.  Actual results and outcomes often differ from
 expectations.
 
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SOURCE Frontier Oil Corporation
    HOUSTON, April 20 /PRNewswire Interactive News Release/ -- Frontier Oil
 Corporation (NYSE:   FTO) expects to release results for the quarter ended
 March 31, 2001, on Friday, April 27, 2001.  The Company has scheduled a
 conference call for Monday, April 30, 2001 at 11:00 am EDT, 10:00 am CDT when
 management will present and discuss the first quarter results.
     To access the call, which is toll-free and open to the public, please dial
 (800) 475-8395 several minutes prior to the call and provide the conference
 call operator with the passcode "Frontier".  For those individuals outside the
 United States, please call (712) 271-0808.  A recorded replay of the entire
 call may be heard through May 9th by dialing (888) 568-0081.  Telephone access
 to the recorded replay will not require a passcode and is also toll-free.  In
 addition, the real-time conference call and a recorded replay will be webcast
 by PR Newswire.  To access the call or the replay via the Internet, go to
 Frontier Oil's website at www.frontieroil.com and register from the Investor
 Relations page of the site.
     The Company also announced the filing of a registration statement on Form
 S-8 to add the common stock of Frontier Oil Corporation as an investment
 option for the Company's two 401(k) plans.  No new shares of the Company's
 common stock are being issued in connection with this registration statement.
 The Company's common stock being registered may be purchased in the open
 market by the trustee of the 401(k) plans.
     Frontier operates a 110,000 barrel-per-day refinery located in El Dorado,
 Kansas, and a 41,000 barrel-per-day refinery located in Cheyenne, Wyoming, and
 markets its refined products principally along the eastern slope of the Rocky
 Mountains and in other neighboring plains states.
     This news release may include forward-looking statements concerning the
 Company.  These may include statements of plans or objectives for future
 operations, statements about future economic performance or assumptions or
 estimates.  The accuracy of these forward-looking statements is subject to a
 wide range of business risks and changes in circumstances that are described
 in our reports that are filed from time to time with the Securities and
 Exchange Commission.  Actual results and outcomes often differ from
 expectations.
 
                     MAKE YOUR OPINION COUNT -  Click Here
                http://tbutton.prnewswire.com/prn/11690X20639161
 
 SOURCE  Frontier Oil Corporation