Designation:D6074−15(Reapproved2022)StandardGuideforCharacterizingHydrocarbonLubricantBaseOils1ThisstandardisissuedunderthefixeddesignationD6074;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisguidesuggestsphysical,chemical,andtoxicologi-caltestmethodsforcharacterizinghydrocarbonlubricantbaseoilsderivedfromvariousrefiningprocessesincludingre-refiningusedoilsandrefiningcrudeoil.Thisguidedoesnotcontainlimitsnordoesitpurporttocoveralltestswhichcouldbeemployed;rather,itrepresentsthefirststepinbetterdescribingimportantparametersoflubricantbaseoilsaffectinglubricantperformanceandsafehandling.Testshavebeenidentifiedtocharacterizethecompositionandperformanceofbaseoilsinadditiontoverifyingtheirconsistency.Undesirablecomponentshavealsobeenidentifiedwitharangeoftypicallevels.Thesearenotlimits.Itistheresponsibilityofthebuyerandsellertodetermineandagreeupontheimplementationofthisguide.1.2Thisguideappliesonlytobaseoilsandnottofinishedlubricants.1.3Baseoilscontainingdetectablelevelsofesters,animalfats,vegetableoils,orothermaterialsusedas,orblendedinto,lubricantsarenotcoveredbythisguide.1.4Thisguideisrelevanttobaseoilscomposedofhydro-carbonsandintendedforuseinformulatingproductsincludingautomotiveandindustriallubricants.Althoughnotintendedtocoverallbaseoilviscositygrades,thisguidedoescoverthemajorityofviscositiesthatwouldbeusedinbothautomotiveandindustrialoilformulations.Thesebaseoilswouldtypicallyhaveaviscosityofapproximately2mm2/sto40mm2/s(cSt)at100°C(50SUSto3740SUSat100°F).1.5ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironme...
