FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * COOLEY CHARLES P   2. Issuer Name and Ticker or Trading Symbol LUBRIZOL CORP [LZ] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Senior Vice President (Last) (First) (Middle) LUBRIZOL CORP, 29400 LAKELAND BLVD 3. Date of Earliest Transaction (Month/Day/Year) 05/02/2007 (Street) WICKLIFFE, OH 44092 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Shares 05/02/2007   M   5,500 A $ 29.8813 30,529.1467 (1) D   Common Shares 05/02/2007   S   5,500 D $ 61.5158 25,029.1467 (1) D   Common Shares 05/02/2007   M   5,695 A $ 28.125 30,724.1467 (1) D   Common Shares 05/02/2007   S   5,695 D $ 61.431 25,029.1467 (1) D   Common Shares 05/02/2007   M   14,000 A $ 30.365 39,029.1467 (1) D   Common Shares 05/02/2007   S   14,000 D $ 61.3454 25,029.1467 (1) D   Common Shares               3,013.5178 (2) I Trust

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Employee Stock Option (Right to Buy)

$ 29.8813

05/02/2007

M

5,500

03/22/1999(3)

03/22/2009

Common Shares

5,500

$ 0

0

D

Employee Stock Option (Right to Buy)

$ 28.125

05/02/2007

M

5,695

03/27/2000(3)

03/27/2010

Common Shares

5,695

$ 0

0

D

Employee Stock Option (Right to Buy)

$ 30.365

05/02/2007

M

14,000

03/26/2001(3)

03/26/2011

Common Shares

14,000

$ 0

13,000

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
COOLEY CHARLES P LUBRIZOL CORP 29400 LAKELAND BLVD WICKLIFFE, OH 44092			Senior Vice President

Signatures

/s/Charles P. Cooley by Andrea A. Zwegat		05/04/2007
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Reflects acquisitions pursuant to a dividend reinvestment plan exempt under Rule 16a-11.
(2)	Reflects end-of-period holdings resulting from acquisitions pursuant to a qualified plan, which are exempt under Rule 16b-3(c).
(3)	Options vest 50% one year after grant date, 75% two years after grant date and 100% three years after grant date.

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