Designation:D5752−10(Reapproved2017)StandardSpecificationforSupplementalCoolantAdditives(SCAs)forUseinPrechargingCoolantsforHeavy-DutyEngines1,2ThisstandardisissuedunderthefixeddesignationD5752;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisspecificationcoversthegeneral,physical,chemical,andperformancerequirementsforSupplementalCoolantAdditives(SCAs)ataprechargedlevelinthecoolingsystemsofheavy-dutyengines.NOTE1—Afterprecharging,SCAsarecustomarilyusedperiodicallytoservicecoolingsystemsat1⁄4to1⁄3theprechargeddosagetocompensateforadditiveslostthroughdilutionanddepletion.1.2TheSCAproductsmeetingthisspecificationarein-tendedforusewithwater,withrecommendeddilutionsofcoolantconcentrates,withpredilutedenginecoolants,ortoupgradetheperformanceoflight-dutyenginecoolantstomeettheheav-dutyrequirementsofSpecificationD6210.Enginecoolantproductsshallbeofthelow-silicatetypeand,ifethyleneglycolbased,shallmeetSpecificationD4985.Propyl-eneglycolbaselow-silicatetypecoolantproductsmayalsobeused,ifthesematerialsmeetthechemicalandperformancerequirementsofSpecificationD4985.1.3TheSCAconcentrate,beforedissolution,maybeineitherliquid,solid,orslurryform.Theformisasagreeduponbetweenthemanufacturerandtheuser.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Theinch-poundunitsinparenthesesareapproximateequivalentsprovidedforinformationonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.1.6Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,Guid...
