Designation:D4682−13StandardSpecificationforMiscibilitywithGasolineandFluidityofTwo-Stroke-CycleGasolineEngineLubricants1ThisstandardisissuedunderthefixeddesignationD4682;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisspecificationcoversfourcategoriesoflubricantsintendedforuseintwo-stroke-cyclespark-ignitiongasolineenginesbasedontheirmiscibilitywithgasolineandtheirlow-temperaturefluidity.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thefollowingsafetyhazardscaveatpertainsonlytothetestmethodsdescribedinthisspecification.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D97TestMethodforPourPointofPetroleumProductsD439SpecificationforAutomotiveGasoline(Withdrawn1990)3D445TestMethodforKinematicViscosityofTransparentandOpaqueLiquids(andCalculationofDynamicViscos-ity)D874TestMethodforSulfatedAshfromLubricatingOilsandAdditivesD2983TestMethodforLow-TemperatureViscosityofLu-bricantsMeasuredbyBrookfieldViscometer3.Terminology3.1DefinitionsofTermsSpecifictoThisStandard:3.1.1fluidity—oftwo-stroke-cyclegasolineenginelubricants,followingindustrypractice,thistermisusedtodesignatetheabsoluteviscosityinmillipascal·seconds(centi-poises)ofthelubricantundertest.Ingeneralusage,fluidityisthereciprocalofabsoluteviscosity.3.1.2miscibility—oftwo-stroke-cyclegasolineenginelubricants,aninversefunctionofthetimerequiredforafuelandlubricantintroducedintotheapparatusasseparatephasestoproduceasingle-phasemixturebyagitationundercontrolledconditions.4.Classification4.1Thecandidateoilsarecla...
