Designation:D5500−20aStandardTestMethodforVehicleEvaluationofUnleadedAutomotiveSpark-IgnitionEngineFuelforIntakeValveDepositFormation1ThisstandardisissuedunderthefixeddesignationD5500;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversavehicletestprocedureforevaluationofintakevalvedepositformationofunleadedspark-ignitionenginefuels.Thistestmethodusesa1985modelBMW318i2vehicle.Mileageisaccumulatedfollowingaspecifieddrivingscheduleoneitherpublicroadortesttrack.ThistestmethodisadaptedfromtheoriginalBMWofNorthAmerica/SouthwestResearchInstituteIntakeValveDeposittestandmaintainsasmuchcommonalityaspossiblewiththeoriginaltest.ChassisdynamometersshallnotbeusedforthistestprocedureastheBMWNA/SwRIIVDTestwasnotintendedtobeapplicabletochassisdynamometersandnocorrelationbetweenroadoperationandchassisdynamometershasbeenestablished.NOTE1—IfthereisanydoubtastothelatesteditionofTestMethodD5500,contactASTMInternational.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesafterSIunitsareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.Specificstatementsonhazardsaregiventhroughoutthistestmethod.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:3D235SpecificationforMineralSpirits(PetroleumSpirits)(Hyd...
