ASTM_D_6709_-_22.pdf

Designation:D670922Standard Test Method forEvaluation of Automotive Engine Oils in the Sequence VIIISpark-Ignition Engine(CLR Oil Test Engine)1This standard is issued under the fixed designation D6709;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.INTRODUCTIONThis test method is written for use by laboratories that utilize the portions of the test method thatrefer toASTM Test Monitoring Center(TMC)2services(see AnnexA1).Laboratories that choose notto use the TMC services may simply disregard these portions.The TMC provides reference oils,and engineering and statistical services to laboratories that desireto produce test results that are statistically similar to those produced by laboratories previouslycalibrated by the TMC.In general,the Test Purchaser decides if a calibrated test stand is to be used.An organization suchas theAmerican Chemistry Council require that a laboratory use the TMC services as part of their testregistration process.In addition,theAmerican Petroleum Institute requires that a laboratory utilize theTMC services in seeking qualification of oil against its specifications.NOTE1The advantage of using the TMC services to calibrate test stands is that the test laboratory(and hence theTest Purchaser)has an assurance that the test stand was operating at the proper level of test severity.It should also beborne in mind that results obtained in a non calibrated test stand may not be the same as those obtained in a test standparticipating in the ASTM TMC services process.1.Scope*1.1 This test method covers the evaluation of automotiveengine oils(SAE grades 0W,5W,10W,20,30,40,and 50,andmulti-viscosity grades)intended for use in spark-ignitiongasoline engines.The test procedure is conducted using acarbureted,spark-ignition Cooperative Lubrication Research(CLR)Oil Test Engine(also referred to as the Sequence VIIItest engine in this test method)run on unleaded fuel.An oil isevaluated for its ability to protect the engine and the oil fromdeterioration under high-temperature and severe service con-ditions.The test method can also be used to evaluate theviscosity stability of multi-viscosity-graded oils.Companiontest methods used to evaluate engine oil performance forspecification requirements are discussed in the latest revisionof Specification D4485.1.2 Correlation of test results with those obtained in auto-motive service has not been established.Furthermore,theresults obtained in this test are not necessarily indicative ofresults that will be obtained in a full-scale automotive spark-ignition or compression-ignition engine,or in an engineoperated under conditions different from those of the test.Thetest can be used to compare one oil with another.1.3 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3.1 ExceptionsThe values stated in inch-pounds forcertain tube measurements,screw thread specifications,andsole source supply equipment are to be regarded as standard.1.3.1.1 The bearing wear in the text is measured in gramsand described as weight loss,a non-SI term.1.4 This test method is arranged as follows:SubjectSectionIntroductionScope1Referenced Documents2Terminology3Summary of Test Method4Before Test Starts4.1Power Section Installation4.2Engine Operation(Break-in)4.3Engine Operation(Test/Samples)4.4Stripped Viscosity4.51This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.B0.01 on Passenger Car Engine Oils.Current edition approved April 1,2022.Published April 2022.Originallyapproved in 2001.Last previous edition approved in 2021 as D6709 21a.DOI:10.1520/D6709-22.2Until the next revision of this test method,the ASTM Test Monitoring Centerwill update changes in this test method by means of Information Letters.Informa-tion Letters may be obtained from the ASTM Test Monitoring Center,203Armstrong Drive,Freeport,PA 16229,Attention:Director,www.astmtmc.org.Thisedition incorporates revisions in all Information Letters through No.212.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1Test Completion(BWL)4.6Significance and Use5Evaluation of Automotive oils5.1Stay in Grade Capabilities5.2Correlation of Results5.3Use5.4Apparatus6Test Engineering,Inc.6.1Fabri