Frontier Oil Elects Leo Hoonakker Vice President Treasurer

HOUSTON--(Business Wire)--
Frontier Oil Corporation (NYSE:FTO) is pleased to announce that
Leo J. Hoonakker was promoted to the position of Vice President -
Treasurer. He will report to the Vice President - Corporate Finance.

Hoonakker has worked for Frontier and its predecessor companies
for over 20 years and as Treasurer of Frontier Oil Corporation since
2005. Prior to joining Frontier, Hoonakker was a lending officer for
First Interstate Bank (Wells Fargo). Hoonakker has nearly 40 years of
credit and cash management experience. He earned a Ph.D in finance and
economics from Colorado University and Kensington University, a
Masters of Business Administration from the University of Utah and a
B.S. in accounting from Westminster College.

Frontier operates a 120,000 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. Information about the Company may be found on its web
site www.frontieroil.com.

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

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