EXHIBIT 23.1

            CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement Nos.
2-99983, 33-61091, 33-42211, 333-42338 and 333-115662 on Form S-8 of The
Lubrizol Corporation of our reports dated March 2, 2005, relating to the
financial statements and financial statement schedule of The Lubrizol
Corporation (which reports express unqualified opinions and include explanatory
paragraphs related to the adoption of Statement of Financial Accounting
Standards No. 142 in 2002) and management's report on the effectiveness of
internal control over financial reporting, appearing in and incorporated by
reference in this Annual Report on Form 10-K of The Lubrizol Corporation for the
year ended December 31, 2004.

        /s/Deloitte & Touche LLP
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DELOITTE & TOUCHE LLP
Cleveland, Ohio
March 2, 2005