Frontier Oil Plans Earnings Release and Conference Call August 6

HOUSTON--(Business Wire)--
Frontier Oil Corporation (NYSE:FTO) plans to announce results for the quarter
ended June 30, 2009 on Thursday, August 6, 2009. Management has scheduled a
conference call for the morning of August 6th at 10:00 a.m. CT to discuss the
financial results and business outlook.

To access the call, which is open to the public, please dial (800) 447-0521
(international callers (847) 413-3238), confirmation number 24942152. A recorded
replay of the call may be heard through August 20, 2009 by dialing (888)
843-8996 (international callers (630) 652-3044), passcode 24942152. In addition,
the real-time conference call and a recorded replay will be available via
webcast by registering from the Investor Relations page of our website
www.frontieroil.com.

Frontier operates a 130,000 barrel-per-day refinery located in El Dorado,
Kansas, and a 52,000 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.

Frontier Oil Corporation
Kristine Boyd, 713-688-9600 x135

Copyright Business Wire 2009