Exhibit 23.1

INDEPENDENT AUDITORS' CONSENT

We consent to the incorporation by reference in this Registration Statement of
Premcor Inc. on Form S-8 of our report dated February 11, 2002 (March 29, 2002
as to Note 15 and April 15, 2002 as to Notes 10 and 19), appearing in
Registration Statement No. 333-70314 on Form S-1 of Premcor Inc., and of our
report dated February 11, 2002 relating to the financial statement schedules
also appearing in Registration Statement No. 333-70314.



/s/ Deloitte & Touche
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St. Louis, Missouri
April 29, 2002