Designation:D6618−14StandardTestMethodforEvaluationofEngineOilsinDieselFour-StrokeCycleSupercharged1M-PCSingleCylinderOilTestEngine1ThisstandardisissuedunderthefixeddesignationD6618;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.INTRODUCTIONThistestmethodcanbeusedbyanyproperlyequippedlaboratory,withoutoutsideassistance.However,theASTMTestMonitoringCenter(TMC)2providesreferenceoilsandanassessmentofthetestresultsobtainedonthoseoilsbythelaboratory.Bythismeans,thelaboratorywillknowwhethertheiruseofthetestmethodgivesresultsstatisticallysimilartothoseobtainedbyotherlaboratories.Furthermore,variousagenciesrequirethatalaboratoryutilizetheTMCservicesinseekingqualificationofoilsagainstspecifications.Forexample,theU.S.Armyimposessucharequirement,inconnectionwithseveralArmyenginelubricatingoilspecifications.Accordingly,thistestmethodiswrittenforusebylaboratoriesthatutilizetheTMCservices.LaboratoriesthatchoosenottousethoseservicesmaysimplyignorethoseportionsofthetestmethodthatrefertotheTMC.ThistestmethodmaybemodifiedbymeansofInformationLettersissuedbytheTMC.Inaddition,theTMCmayissuesupplementarymemorandarelatedtothetestmethod.1.Scope*1.1Thistestmethodcoversafour-strokecycledieselenginetestprocedureforevaluatingengineoilsforcertainhigh-temperatureperformancecharacteristics,particularlyringsticking,ringandcylinderwear,andaccumulationofpistondeposits.SuchoilsincludebothsingleviscositySAEgradeandmultiviscositySAEgradeoilsusedindieselengines.Itiscommonlyknownasthe1M-PCtest(PCforPre-Chamber)andisusedinseveralAPIoilcategories,notablytheCFandCF-2andthemilitarycategorydescribedinMIL-PRF-2104(seeNote1).NOTE1—CompaniontestmethodsusedtoevaluateotherengineoilperformancecharacteristicsforAPIoilcategoriesCFandCF-2arediscussedinSAEJ304.ThecompaniontestsusedbythemilitarycanbefoundinMI...
