EXHIBIT 23





            CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM





We consent to the incorporation by reference in Registration Statement Nos.
2-99983, 33-61091, 33-42211, and 333-42338 on Form S-8 of The Lubrizol
Corporation of our report dated February 6, 2004 (July 19, 2004 as to Note 18
and August 18, 2004 as to the effects of the reorganized operating segments as
described in Note 13) (which report expresses an unqualified opinion and
includes an explanatory paragraph related to the adoption of Statement of
Financial Accounting Standards No. 142 in 2002), appearing in this Current
Report on Form 8-K of The Lubrizol Corporation.



/s/Deloitte & Touche LLP
________________________

DELOITTE & TOUCHE LLP
Cleveland, Ohio
August 20, 2004