Synthetic***iationGreaseProductDescriptionMobilgrease28isasupremeperformance,wide-temperature,antiweargreasedesignedtocombinetheuniquefeaturesofapolyalphaolefin(PAO)syntheticbasefluidwithanorgano-clay(non-soap)thickener.Itsc***istencyisbetweenanNLGINo.1andNo.2grease.Itoffersoutstandingperformanceoverawidetemperaturerange.Thewax-freenatureofthesyntheticbasefluid,togetherwithitshighviscosityindexcomparedtomineraloils,provideexcellentlowtemperaturepumpability,verylowstartingandrunningtorque,andcanhelpreduceoperatingtemperaturesintheloadzoneofrollingelementbearings.TheclaythickenergivesMobilgrease28ahighdroppingpointvalueofaround300ºC,whichprovidesexcellentstabilityathightemperatures.Mobilgrease28resistswaterwashing,providessuperiorload-carryingability,reducesfrictionaldrag,andpreventsexcessivewear.TestsshowthatMobilgrease28lubricateseffectivelyrollingelementbearingsunderconditi***ofhighspeedsandtemperatures.Mobilgrease28hasalsoshownexcellentabilitytolubricatehe***ilyloadedslidingmechani***s,suchaswingflapscrewjacks.Formorethan30years,Mobilgrease28hasbeenthemulti-purposegreaseofchoiceformilitaryandrelated***iationapplicati***,worldwide.FeaturesandBenefitsAparticularrequirementof***iationgreasesistheneedtoresisthightemperaturestresses,whileprovidingexcellentstartingandlowtorqueatlow-temperature.TomeetthiscombinationofneedsExxonMobilproductformulationscientistschosesynthetichydrocarbonbaseoilsforMobilgrease28becauseoftheirlowvolatility,exceptionalthermal/oxidativeresistance,andsuperblow-temperaturecapability.Formulatorschosespecificthickenerchemistryandaproprietaryadditivecombinationwhichhelpsmaximizethebenefitsofthesyntheticbaseoils.Mobilgrease28meetstherequirementsofkeymilitaryandcommercial***iationspecificati***andhasbuiltupasuperbreputationforperformanceandreliabilityamongusersaroundtheworld.Mobilgrease28providesthefollowingadvantagesandpotentialbenefits:FeaturesAdvantagesandPotentialBenefitsHighviscosityindex(VI)syntheticbasestockwithnowaxcontentAllowswideoperatingtemperaturerange-outstandinghighandlowtemperatureperformanceProvidesthickerfluidfilmsprotectingagainstwearofequipmentpartsoperatingathightemperatureCauseslowresistanceduringstart-upatverylowtemperaturesExcellentprotectionagainstwearandcorrosionSuperbbearingprotectionandhelpsextendbearinglifeandreducebearingreplacementcostsExtreme-pressureprotectioncharacteristics***oidsexcessivewear,evenundershockloadHighthermal/oxidativestabilityLongrelubricationintervalsHighresistancetowaterwashoutMaintainsexcellentgreaseperformanceinadverseweatherandotherwater-exposureconditi***Applicati***Mobilgrease28isdesignedforthelubricationofplainandrollingbearingsatlowtohighspeeds,andsplines,screws,wormgears,andothermechani***swherehighfrictionreduction,lowwear,andlowlubricantfrictionlossesarerequired.Therecommendedoperatingtemperaturerangeis-54ºCto177ºC(-65ºFto350ºF)withappropriaterelubricationintervals.Mobilgrease28isrecommendedforuseinlandingwheelassemblies,controlsystemsandactuators,screwjacks,servodevices,sealed-bearingmotors,oscillatingbearings,andhelicopterrotorbearingsonmilitaryandcivilaircraft.Subjecttoequipmentmanufacturerapprovals,itcanalsobeusedonn***alshipboardauxiliarymachineryandwheresupersededspecificati***MIL-G-81322(WP),MIL-G-7711A,MIL-G-3545B,andMIL-G-25760Aarerecommended.Mobilgrease28isalsorecommendedforindustriallubrication,includingsealedorrepackableballandrollerbearingswhereverextremetemperatureconditi***,highspeeds,orwaterwashingresistancearefactors.Typicalindustrialapplicati***includeconveyorbearings,***allalternatorbearingsoperatingattemperaturesnear177ºC(350ºF),high-speedminiatureballbearings,andbearingapplicati***whereoscillatorymotion,andvibrationcreateproblems.Mobilgrease28isqualifiedbytheU.S.MilitaryunderSpecificationMIL-PRF-81322,General-Purpose,Aircraft,andSpecificationDOD-G-24508A(N***y)forshipboardauxiliarymachinery.ItisaU.S.MilitarySymbolWTRandNATOCodeNumberG-395grease.Specificati***andApprovalsMobilgrease28IsApprovedAgainstQualityLevelMIL-PRF-81322GXDOD-G-24508A,Amendment4XNATOG-395XTypicalPropertiesTestMethod***obilgrease28Typicals(1)MIL-PRF-81322LimitsNLGIGrade11/2ThickenerTypeClay(non-soap)ColorVisualDarkRedStructureVisual***ooth,butteryDroppingPoint,ºC(ºF)ASTMD2265307(584)232(450)minViscosityofBaseOil,cStASTMD445at40ºC30at100ºC5.7LowTemp.Torqueat-54ºC(-65ºF),Nm(g-cm)ASTMD1478Starting0.43(4400)0.98(10,000)maxRunning,after1Hr0.05(510)0.098(1,000)maxPenetration@25ºC(77ºF),60StokeWorked,mm/10ASTMD217293265-320ExtendedWorkedPenetrationStability,100,000Strokes,mm/10FTM313303350maxOilSeparation,30Hrsat177ºC,wt%ASTMD61843.52.0-8.0EvaporationLoss,22Hrsat177ºC,wt%ASTMD2595610maxCopperStripCorrosion,24Hrsat100ºCASTMD40481b1bmaxFour-BallWear,Scardia,mmASTMD22660.60.8maxLoadWearIndex,kgfASTMD25964030minRustProtection,48Hrsat125ºF,›1mmdiaCorrosionSpotsASTMD1743Pass0WaterWashout,1Hrat41ºC,wt%ASTMD1264120maxHighTemperaturePerformance,Hrsat177ºCASTMD3336(modified)Pass400minOxidationStability,pressuredropinkPaASTMD942100Hrsat99ºCPass83max500Hrsat99ºCPass172maxDirtCount,Particles/mLFTM300525-74MicronPass1000max75MicronorLarger00OscillationFrictionandWear,ScarDia,35,000cycles,90ºAngle,AluminumBronzeBlock,mmModifiedASTMD3704Pass6.35maxRubberSwell,LTypeSynthetic,1weekat70ºC(158ºF),vol%FTM3603610max(1)Typicalpropertiesaretypicalofthoseobtainedwithnormalproductiontoleranceandmayvaryslightly,whileremainingwithinspecifiedlimits.HealthandSafetyBasedon***ailabletoxicologicalinformation,thisproductisnotexpectedtoproduceadverseeffectsonhealthwhenusedandhandledproperly.Informationonuseandhandling,aswellashealthandsafetyinformation,canbefoundintheMaterialSafetyDataSheet(MSDS)whichcanbeobtainedfromyourlocaldistributororviatheInternetonhttp:///lubes.)