Attached files
| file | filename |
|---|---|
| 10-K - FORM 10-K - FRONTIER OIL CORP /NEW/ | form10k.htm |
| EX-23 - EXHIBIT 23 - FRONTIER OIL CORP /NEW/ | ex23.htm |
| EX-10.12 - EXHIBIT 10.12 - FRONTIER OIL CORP /NEW/ | ex10-12.htm |
| EX-21 - EXHIBIT 21 - FRONTIER OIL CORP /NEW/ | ex21.htm |
| EX-10.11 - EXHIBIT 10.11 - FRONTIER OIL CORP /NEW/ | ex10-11.htm |
| EX-10.14 - EXHIBIT 10.14 - FRONTIER OIL CORP /NEW/ | ex10-14.htm |
| EX-3.1 - EXHIBIT 3.1 - FRONTIER OIL CORP /NEW/ | ex3-1.htm |
| EX-32.2 - EXHIBIT 32.2 - FRONTIER OIL CORP /NEW/ | ex32-2.htm |
| EX-31.1 - EXHIBIT 31.1 - FRONTIER OIL CORP /NEW/ | ex31-1.htm |
| EX-32.1 - EXHIBIT 32.1 - FRONTIER OIL CORP /NEW/ | ex32-1.htm |
| EX-31.2 - EXHIBIT 31.2 - FRONTIER OIL CORP /NEW/ | ex31-2.htm |
| EX-10.62 - EXHIBIT 10.62 - FRONTIER OIL CORP /NEW/ | ex10-62.htm |
| EX-10.61 - EXHIBIT 10.61 - FRONTIER OIL CORP /NEW/ | ex10-61.htm |
Exhibit 18
February
24, 2010
Frontier
Oil Corporation
10000
Memorial Drive, Suite 600
Houston,
Texas 77024-3411
Dear
Sirs:
We have
audited the consolidated financial statements and financial statement schedules
of Frontier Oil Corporation (the “Company”) as of December 31, 2009 and 2008,
and for each of the three years in the period ended December 31, 2009, included
in your Annual Report on Form 10-K to the Securities and Exchange Commission and
have issued our report thereon dated February 24, 2010, which expresses an
unqualified opinion and includes an explanatory paragraph concerning the
Company’s change in its inventory valuation method for crude oil, unfinished
products, and finished products to the last-in, first-out (“LIFO”) method from
the first-in, first-out (“FIFO”) method. Note 3 to such consolidated financial
statements contains a description of your adoption during the year ended
December 31, 2009 of the LIFO inventory valuation method. In our judgment, such
change is to an alternative accounting principle that is preferable under the
circumstances.
Yours
truly,
DELOITTE
& TOUCHE LLP