Designation:D4485−22StandardSpecificationforPerformanceofActiveAPIServiceCategoryEngineOils1ThisstandardisissuedunderthefixeddesignationD4485;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.INTRODUCTIONThisspecificationcoversallthecurrentlyactiveAmericanPetroleumInstitute(API)engineoilperformancecategoriesthathavebeendefinedinaccordancewiththeASTMconsensusprocess.ThereareorganizationswithspecificationsnotsubjecttotheASTMconsensusprocess,suchastheInternationalLubricantStandardizationandApprovalCommittee(ILSAC),AmericanPetroleumInstitute(API–SM,SNSPSpecifications),andtheAssociationdesConstructeursEuropeansd’Automobiles(ACEA).Certainofthesespecifications,whichhavebeendefinedprimarilybytheuseofcurrentASTMtestmethods,havealsobeenincludedintheAppendixesforinformation.IntheASTMsystem,aspecificAPIdesignationisassignedtoeachcategory.Thesystemisopen-ended,thatis,newdesignationsareassignedforusewithnewcategoriesaseachnewsetofoilperformancecharacteristicsaredefined.Oilcategoriesmaybereferencedbyenginebuildersinmakinglubricantrecommendations,andusedbylubricantsuppliersandcustomersinidentifyingproductsforspecificapplications.Whereapplicable,candidateoilprogramsareconductedinaccordancewiththeAmericanChemistryCouncil(ACC)PetroleumAdditivesProductApprovalCodeofPractice.Otherservicecategoriesnotshowninthisdocumenthavehistoricallybeenusedtodescribeengineoilperformance(SA,SB,SC,SD,SE,SF,SG,SHandCA,CB,CC,CD,CD-II,CE,CF,CF-2,CF-4,CG-4)(see3.1.2).SAisnotincludedbecauseitdoesnothavespecifiedengineperformancerequirements.SHisnotincludedbecauseitwasacategorythatcouldnotbelicensedforgasolineengineoiluseintheAPIServiceSymbolafterDec.2,2010.Theothersarenotincludedbecausetheyarebasedontestmethodsforwhichengineparts,testfuel,orreferenceoils,oracombinationthereof,arenolongeravailable.Al...
