-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 HOmX9RNkx9x0rVhMIbEnTYlZLxwJzFgdNx5cx3lDl+ejceQQfhztYQJu2FwhTSPA
 vkFMTX2Hb9L8ob4IbH3vfw==

<SEC-DOCUMENT>0001031794-03-000009.txt : 20030630
<SEC-HEADER>0001031794-03-000009.hdr.sgml : 20030630
<ACCEPTANCE-DATETIME>20030630110624
ACCESSION NUMBER:		0001031794-03-000009
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030623
FILED AS OF DATE:		20030630

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			LUBRIZOL CORP
		CENTRAL INDEX KEY:			0000060751
		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL ORGANIC CHEMICALS [2860]
		IRS NUMBER:				340367600
		STATE OF INCORPORATION:			OH
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		29400 LAKELAND BLVD
		CITY:			WICKLIFFE
		STATE:			OH
		ZIP:			44092
		BUSINESS PHONE:		2169434200

	MAIL ADDRESS:	
		STREET 1:		29400 LAKELAND BLVD
		CITY:			WICKLIFFE
		STATE:			OH
		ZIP:			44092

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			FARMER FOREST J SR
		CENTRAL INDEX KEY:			0001031794

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-05263
		FILM NUMBER:		03762971

	BUSINESS ADDRESS:	
		STREET 1:		LUBRIZOL CORP
		STREET 2:		29400 LAKELAND BLVD
		CITY:			WICKLIFFE
		STATE:			OH
		ZIP:			44092
		BUSINESS PHONE:		3139742000

	MAIL ADDRESS:	
		STREET 1:		LUBRIZOL CORP
		STREET 2:		29400 LAKELAND BLVD
		CITY:			WICKLIFFE
		STATE:			OH
		ZIP:			44092
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>

<ownershipDocument>

    <documentType>4/A</documentType>

    <periodOfReport>2003-06-23</periodOfReport>

    <dateOfOriginalSubmission>2003-06-24</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000060751</issuerCik>
        <issuerName>LUBRIZOL CORP</issuerName>
        <issuerTradingSymbol>LZ</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001031794</rptOwnerCik>
            <rptOwnerName>FARMER FOREST J SR</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>  </rptOwnerStreet1>
            <rptOwnerStreet2>  </rptOwnerStreet2>
            <rptOwnerCity>  </rptOwnerCity>
            <rptOwnerState>  </rptOwnerState>
            <rptOwnerZipCode>  </rptOwnerZipCode>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeSecurity>
        <securityTitle>
            <value>Common Shares</value>
        </securityTitle>
        <transactionDate>
            <value>2003-06-23</value>
        </transactionDate>
        <transactionCoding>
            <transactionFormType>4</transactionFormType>
            <transactionCode>A</transactionCode>
            <equitySwapInvolved>0</equitySwapInvolved>
        </transactionCoding>
        <transactionTimeliness>
            <value></value>
        </transactionTimeliness>
        <transactionAmounts>
            <transactionShares>
                <value>96.7429</value>
                <footnoteId id="F2"/>
            </transactionShares>
            <transactionValue>
                <value>31.01</value>
            </transactionValue>
            <transactionAcquiredDisposedCode>
                <value>A</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>
        <postTransactionAmounts>
            <sharesOwnedFollowingTransaction>
                <value>6197.2783</value>
                <footnoteId id="F1"/>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
    </nonDerivativeSecurity>

    <footnotes>
        <footnote id="F1">Reflects acquisitions pursuant to a dividend reinvestment plan under Rule 16a-11.</footnote>
        <footnote id="F2">Amount shown reflects corrected number of shares acquired.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/Forest J. Farmer, Sr. by Peggy A. Wyszynski</signatureName>
        <signatureDate>2003-06-30</signatureDate>
    </ownerSignature>

</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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