Designation:D5533–98e1AnAmericanNationalStandardStandardTestMethodforEvaluationofAutomotiveEngineOilsintheSequenceIIIE,Spark-IgnitionEngine1ThisstandardisissuedunderthefixeddesignationD5533;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.e1NOTE—Figure15wasdeletedandFigs.14and17werecorrectededitoriallyinMarch1999.INTRODUCTIONThetestmethoddescribedinthisstandardcanbeusedbyanyproperlyequippedlaboratory,withouttheassistanceofanyonenotassociatedwiththatlaboratory.However,theASTMTestMonitoringCenter(TMC)2providesreferenceoilsandanassessmentofthetestresultsobtainedonthoseoilsbythelaboratory(seeAnnexA1).Bythismeans,thelaboratorywillknowwhethertheiruseofthetestmethodgivesresultsstatisticallysimilartothoseobtainedbyotherlaboratories.Furthermore,variousagenciesrequirethatalaboratoryutilizetheTMCservicesinseekingqualificationofoilsagainstspecifications.Forexample,theU.S.Armyimposessucharequirement,inconnectionwithseveralArmyenginelubricatingoilspecifications.Accordingly,thistestmethodiswrittenforusebylaboratorieswhichutilizetheTMCservices.LaboratorieswhichchoosenottousethoseservicesmaysimplyignorethoseportionsofthetestmethodwhichrefertotheTMC.ThistestmethodmaybemodifiedbymeansofInformationLettersissuedbytheTMC.Inaddition,theTMCmayissuesupplementarymemorandarelatedtothetestmethod(seeAnnexA1).UsersofthistestmethodshallcontacttheASTMTestMonitoringCentertoobtainthemostrecentofthese.1.Scope1.1Thistestmethodcoversanenginetestprocedureforevaluatingautomotiveengineoilsforcertainhigh-temperatureperformancecharacteristics,includingoilthickening,sludgeandvarnishdeposition,andoilconsumption,aswellasenginewear.Suchoilsincludebothsingleviscositygradeandmultiviscositygradeoilswhichareusedinbothspark-ignition,gasoline-fueledengines,aswellasindieselengines.2NOTE1—Companiontestmethodsu...
