ASTMD260286II0757530O0262557//-SC*a"/....-.....Designation:D2602i864cni~Designation:350/81AnAmericanNationalStandardAMERICANSOCIETYFORTESTINGANDMATERIALS1916RaceSI.,Philadelphia.Pa.19103ReprintedfromtheAnnualBookofASTMStandards.CopyrightASTMIfnotlistedinthecurrentcombinedindex,willappearinthenextedition.StandardTestMethodforAPPARENTVISCOSITYOFENGINEOILSATLOWTEMPERATUREUSINGTHECOLD-CRANKINGSIMULATORIThisstandardisissuedunderthefixeddesignationD2602:thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor.inthecaseofrevision.theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.ThismelhotiwasadoptedasanASTM-IPSlanàard.1.scope1.1ThistestmethodcoversthelaboratorydeterminationofapparentviscosityofengineoilsatO"F(-17.8"C)andathighshearrates.Theresultsarerelatedtoengine-crankingcharacter-isticsofengineoils(Notes1,2and3).1.2Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandardma-vinvolvehazardousma-terials,operations,andequipment.Thisstandarddoesnotpiirporttoaddressallofthesafetyprob-.lemsassociatedwithitsuse.Itistheresponsibil-ityoftheuserofthisstandardtoestablishappro-priatesafityandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.NOTE¡-TheCRCtestoilsusedtoestablishthistestmethodcovertherangefrom600to8400CP(mPa.s)atO"F(-17.8"C)and2000to20000CP(mPa-s)at-20°F(-28.9"C).PrecisiondataforthistestmethodarebasedonlyonthedataatO'F.NOTE2-Thedetailedrelationsbetweentheappar-entviscositiesdeterminedbythistestmethodandenginexrankingperformanceasdeterminedbytheCo-ordinatingResearchCouncil(CRC)L-49testareshowninAppendixesIandIIofTestMethodD2602.SeealsoCRCReportNo.409(availablefromCoordinatingResearchCouncil,Inc.;2i9PerimeterCenterParkway,Atlanta,GA30346).ItisimportanttobeawarethattheCRCL-49testismuchlessstandardizedandprecisethanthistestmethod.Therefore,appare...
