1、Designation:D 5119 02An American National StandardStandard Test Method forEvaluation of Automotive Engine Oils in the CRC L-38Spark-Ignition Engine1This standard is issued under the fixed designation D 5119;the number immediately following the designation indicates the year oforiginal adoption or,in
2、 the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.INTRODUCTIONThe te
3、st method described in this standard can be used by any properly equipped laboratory withoutthe assistance of anyone not associated with that laboratory.However,the ASTM Test MonitoringCenter(TMC)2offers a very valuable service to a test laboratory;the Center provides reference oilsand an assessment
4、 of the test results obtained on those oils by the laboratory(see Appendix X1).Bythis means,the laboratory will know whether their use of the test method gives results statisticallysimilar to those obtained by other laboratories.Furthermore,various agencies require that a laboratoryutilize the TMC s
5、ervices in seeking qualification of oils against specifications.For example,the U.S.Army imposes such a requirement,in connection with several Army lubricant specifications.Accordingly,this test method is written for use by laboratories that utilize the TMC services.Laboratories that choose not to u
6、se those services may simply ignore those portions of the test methodthat refer to the TMC.This test method may be modified by means of Information Letters issued bythe TMC.In addition,the TMC may issue supplementary memoranda related to the test method(seeAnnex A4).1.Scope1.1 This engine oil test m
7、ethod covers the evaluation ofautomotive engine oils(SAE3grades 5W 10W,20,30,40,and50,and multiviscosity grades)intended for use in eitherspark-ignition gasoline engines,or in diesel engines.The testprocedure is conducted using a carbureted,spark-ignitionCooperative Lubrication Research(CLR)Oil Test
8、 Engine(referred to as the L-38 engine in this test method).An oil isevaluated for protection against engine and oil deteriorationunder high-temperature,heavy-duty service conditions.Thetest method can also be used to evaluate the viscosity stabilityof multiviscosity-graded oils.1.2 The two measures
9、 of engine deterioration used in thistest method are(1)weight loss of copper-lead bearings used inthe test power section,and(2)varnish and sludge deposits onpower section parts.1.3 The two measures of oil deterioration used in this testmethod are(1)the change in the acid number of the oil,and(2)the
10、change in the viscosity of the oil during the test period.1.4 Correlation of test results with those obtained in auto-motive service has not been established.Furthermore,theresults obtained in this test method are not necessarily indica-tive of results that will be obtained in a full-scale automotiv
11、espark-ignition or compression-ignition engine,or in an engineoperated under conditions different from those of the testmethod.The test can be used to compare one oil with another.NOTE1Companion test methods used to evaluate engine oil perfor-mance for specification requirements include the followin
12、g current ver-sions of single-cylinder and multicylinder engine tests:ASTM STP 509A,Single Cylinder Engine Tests for Evaluating thePerformance of Crankcase Lubricants4Part I,Caterpillar 1G2 Test MethodPart II,Caterpillar 1H2 Test MethodASTM STP 315H,Multicylinder Test Sequences for Evaluating Engine
13、Oils41This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products and Lubricantsand is the direct responsibility of SubcommitteeD02.B0.01on Passenger Car Engine Oils.Current edition approved June 10,2002.Published September 2002.Originallypublished as D 511990.Last previous
14、 edition D 511999.The procedure,originally developed by the Coordinating Research Council,waspublished as Federal Test Method 3405.2,Oxidation of Crankcase Lubricating Oils(CLR Engine),1972.In 1980,it was published as ASTM STP 509A,Part IV LabecoL-38 Test Method.2ASTM Test Monitoring Center,6555 Pen
15、n Ave.,Pittsburgh,PA 15206-4489.This edition includes all Information Letters through No.31.3Available from Society of Automotive Engineers(SAE),400 CommonwealthDr.,Warrendale,PA 15096-0001.4Available from ASTM International Headquarters.1Copyright ASTM International,100 Barr Harbor Drive,PO Box C70
16、0,West Conshohocken,PA 19428-2959,United States.Part 1,Sequence IIDPart 2,Sequence IIIDPart 3,Sequence V-DASTM Research Report RR:D02-1225 Sequence IIIE,MulticylinderTest Sequence for Evaluating Automotive Engine Oils5ASTM D02 Proposal P212,Proposed Test Method for VE TestProcedure4Also,see Engine Oil TestsSAE J304 for details on these and otherengine oil test methods.61.5 The values stated in inch-pound units are to be regardedas the standard;except for the case of bearing weight measure-ments,
