Designation:D6795−19a´1StandardTestMethodforMeasuringtheEffectonFilterabilityofEngineOilsAfterTreatmentwithWaterandDryIceandaShort(30min)HeatingTime1ThisstandardisissuedunderthefixeddesignationD6795;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—EditoriallyupdatedTMCgovernanceinformationinJune2022.INTRODUCTIONPortionsofthistestmethodarewrittenforusebylaboratoriesthatmakeuseofASTMTestMonitoringCenter(TMC)2services(seeAnnexA1).TheTMCprovidesreferenceoils,andengineeringandstatisticalservicestolaboratoriesthatdesiretoproducetestresultsthatarestatisticallysimilartothoseproducedbylaboratoriespreviouslycalibratedbytheTMC.Ingeneral,theTestPurchaserdecidesifacalibratedteststandistobeused.OrganizationssuchastheAmericanChemistryCouncilrequirethatalaboratoryutilizetheTMCservicesaspartoftheirtestregistrationprocess.Inaddition,theAmericanPetroleumInstituteandtheGearLubricantReviewCommitteeoftheLubricantReviewInstitute(SAEInternational)requirethatalaboratoryusetheTMCservicesinseekingqualificationofoilsagainsttheirspecifications.TheadvantageofusingtheTMCservicestocalibrateteststandsisthatthetestlaboratory(andhencetheTestPurchaser)hasanassurancethattheteststandwasoperatingattheproperleveloftestseverity.Itshouldalsobeborneinmindthatresultsobtainedinanon-calibratedteststandmaynotbethesameasthoseobtainedinateststandparticipatingintheASTMTMCservicesprocess.LaboratoriesthatchoosenottousetheTMCservicesmaysimplydisregardtheseportions.1.Scope*1.1Thistestmethodcoversthedeterminationoftheten-dencyofanoiltoformaprecipitatethatcanpluganoilfilter.Itsimulatesaproblemthatmaybeencounteredinanewenginerunforashortperiodoftime,followedbyalongperiodofstoragewithsomewaterintheoil.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1...
