1、Designation:D670915aStandard 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
2、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 can be used by any properly equipped laboratory without outside assistance.H
3、owever,the ASTM Test Monitoring Center(TMC)2offers a very valuable service to the testlaboratory;the Center provides reference oils and an assessment of the test results obtained on thoseoils by the laboratory(see Appendix X1).By this means,the laboratory will know whether their useof the test metho
4、d gives results statistically similar to those obtained by other laboratories.Furthermore,various agencies require that a laboratory utilize the TMC services in seekingqualification of oils against specifications.For example,the American Petroleum Institute(API)imposes such a requirement,in connecti
5、on with several engine lubricating oil specifications.Accordingly,this test method is written for use by laboratories that utilize the TMC services.Laboratories that choose not to use those services may simply ignore those portions of the test methodthat refer to the TMC.This test method may be modi
6、fied by means of Information Letters issued by the TMC.In addition,the TMC may issue supplementary memoranda related to the test method(see Annex A3).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 fo
7、r 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 en
8、gine 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
9、 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 compress
10、ion-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 stat
11、ed 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 standard does not purport to address all of thesafety
12、 concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.Specific precau-tionary statements are provided throughout this test method.1.5
13、This test method is arranged as follows:SubjectSectionIntroductionScope1Referenced Documents21This 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.Curre
14、nt edition approved Oct.1,2015.Published October 2015.Originallyapproved in 2001.Last previous edition approved in 2015 as D6709 15.DOI:10.1520/D6709-15A.2Until the next revision of this test method,the ASTM Test Monitoring Centerwill update changes in this test method by means of Information Letter
15、s.Informa-tion Letters may be obtained from the ASTM Test Monitoring Center,6555 PennAvenue,Pittsburgh,PA 15202-4489,Attention:Administrator.This edition incor-porates revisions in all Information Letters through No.143.*A Summary of Changes section appears at the end of this standardCopyright ASTM
16、International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 Terminology3Summary of Test Method4Before Test Starts4.1Power Section Installation4.2Engine Operation(Break-in)4.3Engine Operation(Test/Samples)4.4Stripped Viscosity4.5Test Completion(BWL)4.6Significance and Use5Evaluation of Automotive oils5.1Stay in Grade Capabilities5.2Correlation of Results5.3Use5.4Apparatus6Test Engineering,Inc.6.1Fabricated or Specially Prepared Items6.2Instruments and Controls6.
