Designation:D4682−18StandardSpecificationforMiscibilitywithGasolineandFluidityofTwo-Stroke-CycleGasolineEngineLubricants1ThisstandardisissuedunderthefixeddesignationD4682;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisspecificationcoversfourcategoriesoflubricantsintendedforuseintwo-stroke-cyclespark-ignitiongasolineenginesbasedontheirmiscibilitywithgasolineandtheirlow-temperaturefluidity.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thefollowingsafetyhazardscaveatpertainsonlytothetestmethodsdescribedinthisspecification.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafety,health,andenviron-mentalpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D97TestMethodforPourPointofPetroleumProductsD439SpecificationforAutomotiveGasoline(Withdrawn1990)3D445TestMethodforKinematicViscosityofTransparentandOpaqueLiquids(andCalculationofDynamicViscos-ity)D874TestMethodforSulfatedAshfromLubricatingOilsandAdditivesD2983TestMethodforLow-TemperatureViscosityofAu-tomaticTransmissionFluids,HydraulicFluids,andLubri-cantsusingaRotationalViscometer3.Terminology3.1DefinitionsofTermsSpecifictoThisStandard:3.1.1fluidity,n—oftwo-stroke-cyclegasolineenginelubricants,followingindustrypractice,thistermisusedtodesignatetheabsoluteviscosityinmillipascal·seconds(centi-poises...
