Designation:D6202–02AnAmericanNationalStandardStandardTestMethodforAutomotiveEngineOilsontheFuelEconomyofPassengerCarsandLight-DutyTrucksintheSequenceVIASparkIgnitionEngine1ThisstandardisissuedunderthefixeddesignationD6202;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.INTRODUCTIONThistestmethodcanbeusedbyanyproperlyequippedlaboratory,withoutoutsideassistance.However,theASTMTestMonitoringCenter(TMC)2providesreferenceoilsandassessmentofthetestresultsobtainedonthoseoilsbythelaboratory(seeAnnexA1).Bythismeans,thelaboratorywillknowwhethertheiruseofthetestmethodgivesresultsstatisticallysimilartothoseobtainedbyotherlaboratories.Furthermore,variousagenciesrequirethatalaboratoryutilizetheTMCservicesinseekingqualificationofoilsagainstspecifications.Forexample,theU.S.Armyimposessucharequirement,inconnectionwithseveralArmyenginelubricatingoilspecifications.Accordingly,thistestmethodiswrittenforusebylaboratoriesthatutilizetheTMCservices.LaboratoriesthatchoosenottousethoseservicesmaysimplyignorethoseportionsofthetestmethodthatrefertotheTMC.ThistestmethodmaybemodifiedbymeansofInformationLettersissuedbytheTMC.Inaddition,theTMCmayissuesupplementarymemorandarelatedtothetestmethod.UsersofthistestmethodshallcontacttheAdministratorofTMCtoobtainthemostrecentofthese.1.Scope1.1Thistestmethodcoversanenginetestprocedureforthemeasurementoftheeffectsofautomotiveengineoilsonthefueleconomyofpassengercarsandlight-duty3856kg(8500lb),orless,grossvehicleweighttrucks.Thetestsareconductedusingaspecified4.6-Lspark-ignitionengineonadynamom-eterteststand.Itappliestomultiviscositygradeoilsusedintheseapplications.CompaniontestmethodsusedtoevaluateengineoilperformanceforspecificationrequirementsarediscussedinthelatestrevisionofSpecificationD4485.1.2ThevaluesstatedineitherSIunitsorotherunitsshallbe...
