AMSOIL SAE 50 Long Life Synthetic Transmission Oil Field Study in Over the Road Applications

7/29/2019 AMSOIL SAE 50 Long Life Synthetic Transmission Oil Field Study in Over the Road Applications

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F I E L D S T U D Y

SAE 50 Long-Life Synthetic

Transmission Oil Field Study inOver-the-Road Applications


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Overview

Modern manual transmissions installed in heavy-duty, over-the-road (OTR)TRUCKSPOSESIGNIlCANTCHALLENGESTOLUBRICANTS4ODAYSMANUALTRANSMISSIONLUBRICANTSMUSTPROTECTHEAVILYLOADEDGEARSBEARINGSANDOTHERCRITICALCOM -

PONENTSFROMWEARANDTHEEFFECTSOFTHERMALBREAKDOWNTHROUGHOUTEXTENDEDMILEDRAININTERVALS,UBRICANTSINSTALLEDIN/42APPLICATIONSINCAPABLEof meeting these requirements are largely considered outdated and may lead toCOSTLYREPAIRS

Objective$ETERMINEIF!-3/),3!%,ONG,IFE3YNTHETIC4RANSMISSION/ILPROVIDESTHEHIGHLEVELOFPROTECTIONREQUIREDOFMANUALTRANSMISSIONSINSTALLEDINHEAVYDUTYLONGHAULmEETAPPLICATIONSPRACTICINGMILE

DRAININTERVALS

Methodology!-3/),PARTNEREDWITH3UPERIOR7ISBASED*EFF&OSTER4RUCKINGWHICHHAULSPETROLEUMAGGREGATEFOREST

PRODUCTSANDOTHERFREIGHTTHROUGHOUTTHECONTIGUOUSSTATESANDALL#ANADIANPROVINCES4HEmEETPRIMARILY

HAULSFULLYLOADEDTRAILERSTHROUGHHOTANDCOLDTEMPERATUREEXTREMES6EHICLESROUTINELYENCOUNTER

DEMANDINGDRIVINGCONDITIONSINCLUDINGSTOPANDGOCITYTRAFlCANDSTEEPINCLINESCREATINGTHEIDEAL

ENVIRONMENTFORTESTINGTRANSMISSIONmUIDS

"EGINNING*ULY!-3/),3!%,ONG,IFE3YNTHETIC4RANSMISSION/ILWASINSTALLEDINNEWMODELYEARAND+ENWORTHTRUCKSEQUIPPEDWITH%ATONMANUALTRANSMISSIONS4HETRUCKSWEREUSEDBY

&OSTER4RUCKINGBETWEENANDDURINGWHICHOILSAMPLESWERECOLLECTEDFROMACROSSSECTIONOFVEHICLESATVARIOUSMILEAGEINTERVALS/ILSAMPLESWEREALSOCOLLECTEDFROM/42TRUCKSEQUIPPEDWITHTRANS-

MISSIONSFACTORYlLLEDWITHANORIGINALEQUIPMENTMANUFACTURER/%-3!%TRANSMISSIONOIL4HETRUCKS

OPERATEDINNEARLYIDENTICALCONDITIONSTOTHETRUCKSUSING!-3/),3!%,ONG,IFE3YNTHETIC4RANSMISSION/ILANDTHEOILSAMPLESDRAWNHELPEDESTABLISHAPERFORMANCEBENCHMARKAGAINSTWHICHTOCOMPARETHE

PERFORMANCEOFTHE!-3/),PRODUCT/ILANALYSISWASCONDUCTEDACCORDINGTO!34-METHODOLOGYTO

DETERMINEVISCOSITYRETENTION!34-$IRONANDCOPPERWEARMETALSCONTENT!34-$ANDTOTALACIDNUMBER!34-$

4HETRANSMISSIONFROMUNITWASRANDOMLYSELECTEDANDREMOVEDFROMSERVICEFOLLOWINGMILESINSERVICEONASINGLEOILCHANGE)TWASTHENDISASSEMBLEDANDRATEDFORWEARSLUDGEANDOTHERDISTRESSBYAN

!34-CALIBRATEDRATER4HISPAPERDISPLAYSOILANALYSISRESULTSFORBOTH!-3/),3!%,ONG,IFE3YNTHETIC4RANSMISSION/ILANDTHE/%-FACTORYlLLTRANSMISSIONOILASWELLASPHOTOGRAPHICRESULTSANDANALYSISOFTHE

TRANSMISSIONDISASSEMBLY


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Oil Analysis Viscosi ty RetentionThe severe operational environment inside heavy-duty manual transmissions can cause permanent viscosity

LOSSDUETOMECHANICALSHEAR%XCESSIVEVISCOSITYLOSSIMPAIRSTHEOILSABILITYTOFORMAPROTECTIVELUBRICATINGlLMBETWEENMETALPARTS

Transmission Oil Viscosity (ASTM D-445)

Results!-3/),3!%,ONG,IFE3YNTHETIC4RANSMISSION/ILRESISTEDSHEARANDVISCOSITYLOSSASEFFECTIVELYASOR

BETTERTHANTHE3!%/%-OIL!STHESERVICEINTERVALPROGRESSEDTHEVISCOSITYOFTHE!-3/),PRODUCTCONTINUEDONLYAGRADUALDOWNWARDPROGRESSION4HEOILMAINTAINEDAPROTECTIVELUBRICATINGlLMTHROUGHOUT

ITSSERVICELIFE


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Oil Analysis Iron Content3OMEIRONCONTENTINTRANSMISSIONOILISNORMAL%LEVATEDLEVELSHOWEVERAREANINDICATIONGEARSORBEARINGS

ARESUFFERINGABNORMALWEAR

Transmiss ion Wear Metal (Iron) (ASTM D-5185)

Results!-3/),3!%,ONG,IFE3YNTHETIC4RANSMISSION/ILEFFECTIVELYLIMITEDIRONWEARMETALGENERATIONWITHIRONCONTENTREMAININGLOWFOLLOWINGMILESINSERVICE2ESULTSARECONSISTENTWITHTHE/%-FACTORYlLLOIL

ANDINDICATE!-3/),3!%,ONG,IFE3YNTHETIC4RANSMISSION/ILLIMITEDMETALTOMETALCONTACTANDMETTHENEEDSOFHEAVYDUTY/42TRUCKSPRACTICINGMILEDRAININTERVALS


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Oil Analysis Copper Content4HE%ATONTRANSMISSIONSMODEL&2/#AND24,/!lLLEDWITH!-3/),3!%,ONG,IFE

3YNTHETIC4RANSMISSION/ILUSEDINTHISSTUDYCONTAINSEVERALPOTENTIALSOURCESOFCOPPERWEARPARTICLES

#OPPERPARTICLESINTHETRANSMISSIONmUIDCANBEANINDICATORWEARISTAKINGPLACE

Transmiss ion Wear Metal (Copper) (ASTM D-5185)

Results#OPPERCONTENTIN!-3/),3!%,ONG,IFE3YNTHETIC4RANSMISSION/ILREMAINEDLOWTHROUGHOUTTHETEST

INTERVALANDCOMPAREDFAVORABLYTOTHEFACTORYlLLmUID!-3/),3!%,ONG,IFE3YNTHETIC4RANSMISSION/ILlimited copper wear metal generation in each transmission throughout the entire test interval, demonstrating

THEOILPROTECTSCOMPONENTSCONTAININGYELLOWMETALS


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Oil Analysis Total Acid Number (TAN)4!.ISAMEASUREOFTHEOILSOXIDATIVESTABILITY!LUBRICANTS4!.SHOULDINCREASEGRADUALLYASTHESERVICE

INTERVALPROGRESSES3HARPINCREASESAREANINDICATORTHELUBRICANTISREACHINGITSCONDEMNATIONLIMIT

SAE 50 Long-Life Synthetic Transmiss ion Oil Delta TAN

Results$ELTA4!.INDICATESTHEDIFFERENCEBETWEEN4!.OFUSEDOILCOMPAREDTO4!.OFTHESAMEOILWHENNEW)T

DEMONSTRATESTHEPERFORMANCEOFTHEOILINDEPENDENTOFADDITIONALDATATHUSVALUESFORTHE/%-mUIDARENOT

GIVEN!NINCREASEOFTOOVERTHE3!%,ONG,IFE3YNTHETIC4RANSMISSION/ILBASELINEVALUEISOFTENUSEDASANINDICATORTHATTHEOILISAPPROACHINGITSCONDEMNATIONLIMIT4!.REMAINEDSTABLETHROUGHOUTTHE

SERVICEINTERVALANDSHOWEDNOAPPRECIABLEINCREASE6ALUESINDICATE!-3/),3!%,ONG,IFE3YNTHETIC4RANSMISSION/ILISCAPABLEOFSAFELYPROVIDINGMILESERVICEINTERVALS


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Transmission Component Ratings4OFURTHEREVALUATETHEPERFORMANCEOF!-3/),3!%,ONG,IFE3YNTHETIC4RANSMISSION/ILTHETRANSMIS-

SIONINUNITWASDISASSEMBLEDAFTERACCUMULATINGMILESONTHEOILANDEVALUATEDBYAN!34-CALIBRATEDRATER%ACHCOMPONENTWASASSIGNEDAMERITRATINGONASCALEFROMTOWITHREPRESENTING

THEABSENCEOFDISTRESSANDREPRESENTINGCATASTROPHICDISTRESSSEETABLEBELOW2ATINGCRITERIAASDElNEDin ASTM Distress Rating Manual 21WEREUSEDANDINCLUDEBURNISHWEARRIPPLINGRIDGINGPITTINGSPALLINGSCORINGDISCOLORATIONCORROSIONCHIPPINGANDSLUDGESEETABLEONPAGEFORDElNITIONS4HEFOLLOWING

SECTIONSDISPLAYTHERESULTS

Numerical Distress Rating Scales for Gears*

Value Level of Distress

None

Trace

8 4RACE,IGHT

,IGHT

,IGHT-EDIUM

5 Medium

4 Medium-Heavy

3 Heavy

Heavy to Catastrophic

5PTOOFTHEGEARTOOTHSURFACENOTRATABLE

Heavy to Catastrophic

'REATERTHANANDLESSTHANOFTHEGEARTOOTHSURFACENOTRATABLE

0 Catastrophic

OFTHEGEARTOOTHSURFACENOTRATABLE

* Applies to all components in this document


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'EAR2ATING$ENITIONS

Merit Rating $ElNITIONOFADISTRESSORDEPOSITCONDITIONINNUMERICALTERMSONA

DESCENDINGSCALEFROMTENWHICHREPRESENTSABSENCEOFDISTRESS

Burnish An alteration of the original manufactured surface ranging from a dull to a

BRIGHTLYPOLISHEDCONDITION

Wear The removal of metal, without evidence of surface fatigue or scoring,

resulting in partial or complete elimination of tool or grinding marks and/orDEVELOPMENTOFADISCERNIBLESHOULDERRIDGEATTHEBOTTOMOFTHECONTACT

AREANEARTHEROOTORATTHETOEORHEELENDOFTHEPINIONTOOTHCONTACTAREA

Abrasive Wear 7EARCAUSEDBYLAPPINGOFMATINGSURFACESBYlNEPARTICLESSUSPENDEDINLUBRICANTFUELAIRORIMBEDDEDINASURFACE

Adhesive Wear 7EARCAUSEDBYSHEARINGOFJUNCTIONSFORMEDBETWEENOPERATINGSURFACES

INDIRECTMETALTOMETALCONTACTSHEAREDOFFPARTICLESEITHERREMAINAFlXEDTOEITHERTHEMATINGSURFACESORACTASWEARPARTICLESBETWEENTHESURFACES

Rippling An alteration of the tooth surface to give an appearance of a more or less

REGULARPATTERNRESEMBLINGRIPPLESONWATERORlSHSCALES

NOTE:%XAMINATIONOFTHESURFACEWITHOBLIQUELIGHTINGUSUALLYISNECESSARYTOSHOWTHISCONDITION

Ridging An alteration of the tooth surface to give a series of parallel raised and

polished ridges running in the direction of the sliding motion, either partially

ORCOMPLETELYACROSSTHETOOTHSURFACES

Pitting 3MALLIRREGULARCAVITIESINTHETOOTHSURFACELESSTHANSQUAREMILLIMETERRESULTINGFROMTHEBREAKINGOUTOFSURFACEMETAL

Spalling 4HEBREAKINGOUTOFmAKESORIRREGULARAREAOFTHETOOTHSURFACESQUAREMILLIMETERORLARGERACONDITIONMOREEXTENSIVETHANPITTING

Scoring 4HEDISPLACEMENTOFMETALBYLOCALMOMENTARYWELDINGFROMTHEGEARTOOTHRESULTINGINTHEDEVELOPMENTOFAMATTEORFROSTEDDULLSURFACE

Discoloration !NYALTERATIONINTHENORMALCOLOROFRATEDSURFACES

Corrosion !GENERALALTERATIONOFTHElNISHEDSURFACESBYDISCOLORATIONACCOMPANIEDBYROUGHENINGNOTATTRIBUTABLETOMECHANICALACTION2USTISASPECIALCASE

OFCORROSION

Chipping Ring and pinion gears A condition caused in the manufacturing process inwhich a small irregular cavity is present only at the face/crown edge inter-

FACE4HEEDGECHIPPINGPHENOMENONOCCURSWHENSUFlCIENTFATIGUECYCLESaccumulate after tooth surface wear relieves the compressive residual stress

ONTHETOOTHPROlLESSIDEOFTHEPROlLETOTOPLANDINTERFACE#HIPPINGWITHINMMOFTHEFACECROWNEDGEINTERFACEISTOBECALLEDCHIPPINGNOTPITTINGSPALLING

Sludge !DEPOSITCOMPOSEDOFORGANICRESIDUEWHICHMAYCONTAINFUELLUBRICANT

ANDORWATER3UCHDEPOSITSWILLBEFOUNDONSURFACESOPERATINGATBULKUNITTEMPERATUREANDEXPOSEDTOFUELSANDORLUBRICANTS4HESEDEPOSITSDONOT

DRAINBUTCANBEREMOVEDBYWIPINGWITHMODERATEPRESSUREUSINGACLEANDRYSOFTLINTFREEWIPINGMATERIAL$EPOSITSRATEDASSLUDGEMAYVARYIN

CHARACTERISTICSnCOLORTRANSPARENCYANDCONSISTENCY

Table taken from!34-$ISTRESS2ATING-ANUAL


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Mainshaft Overdrive Gear

Condition Drive Side Coast Side

Burnish Dull Dull

Wear 8 8

Rippling

Ridging

Pitting

Spalling

Scoring

Discoloration

Corrosion

Results-ERITRATINGSFORBURNISHAREREPRESENTEDBYQUALITATIVETERMSRANGINGFROMdullto brightly polished

'REATERLEVELSOFWEARTOGEARTEETHAREDENOTEDBYBRIGHTERLEVELSOFBURNISH4HEMAINSHAFTOVERDRIVEGEAR

EARNEDABURNISHRATINGOFdullINDICATINGVERYLOWWEAR4HEGEAREARNEDPERFECTMERITRATINGSFOR

RIPPLINGRIDGINGPITTINGSPALLINGSCORINGANDCORROSION2ATINGSFORWEARANDDISCOLORATIONWERELIKEWISE

VERYHIGHDEMONSTRATING!-3/),3!%,ONG,IFE3YNTHETIC4RANSMISSION/ILPROVIDEDANEXTREMELYHIGHLEVELOFPROTECTION


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Burnish Medium Bright Medium Bright

Wear 8 8

Rippling

Ridging

Pitting

Spalling

Scoring

Discoloration

Corrosion

Upper Right Countershaft Overdrive Gear

Results4HEUPPERRIGHTCOUNTERSHAFTOVERDRIVEGEARSHOWEDNOSIGNSOFEXCESSIVEDISTRESSANDACHIEVEDPERFECT

MERITRATINGSINSIXOFEIGHTAPPLICABLECATEGORIES2ATINGSFORWEARANDDISCOLORATIONWERELIKEWISEVERYHIGHDEMONSTRATING!-3/),3!%,ONG,IFE3YNTHETIC4RANSMISSION/ILPROVIDEDANEXTREMELYHIGHLEVEL

OFPROTECTION


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Wear 8 8

Rippling

Ridging

Pitting

Spalling

Scoring

Discoloration

Corrosion

Mainshaft Input Drive Gear

Results4HEMAINSHAFTINPUTDRIVEGEARSHOWEDNOSIGNSOFEXCESSIVEDISTRESSANDACHIEVEDPERFECTMERIT

RATINGSINSIXOFEIGHTAPPLICABLECATEGORIES2ATINGSFORWEARANDDISCOLORATIONWERELIKEWISEVERYHIGH

DEMONSTRATING!-3/),3!%,ONG,IFE3YNTHETIC4RANSMISSION/ILPROVIDEDANEXTREMELYHIGHLEVEL

OFPROTECTION

CLOSEUP


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Wear 8 8

Rippling

Ridging

Pitting

Spalling

Scoring

Discoloration

Corrosion

Upper Right Countershaft Mating Gear

Results!GAINTHEUPPERRIGHTCOUNTERSHAFTMATINGGEARSHOWEDNOSIGNSOFEXCESSIVEDISTRESSANDACHIEVEDPERFECT

MERITRATINGSINSIXOFEIGHTAPPLICABLECATEGORIES2ATINGSFORWEARANDDISCOLORATIONWERELIKEWISEVERY

HIGHDEMONSTRATING!-3/),3!%,ONG,IFE3YNTHETIC4RANSMISSION/ILPROVIDEDANEXTREMELYHIGHLEVEL

OFPROTECTION

CLOSEUP


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Upper Right Front Countershaft

Bearing Merit RatingsCondition Cups Rollers

Wear 8 8

Scoring

Pitting

Spalling

Discoloration 8 8

Corrosion

Roller End Wear - 8

Upper Right Front Countershaft Bearing

Results(EAVILYLOADEDHIGHTEMPERATUREOPERATIONCANRESULTINBEARINGDISTRESSANDULTIMATELYFAILURE)NTHEAREAS

OFSCORINGPITTINGSPALLINGANDCORROSIONTHEUPPERRIGHTFRONTCOUNTERSHAFTBEARINGRECEIVEDPERFECTMERIT

RATINGSOFINDICATING!-3/),3!%,ONG,IFE3YNTHETIC4RANSMISSION/ILPROVIDEDSUPERIORCRITICAL

COMPONENTPROTECTION

Merit ratings of 8 (trace-light)FORWEARANDDISCOLORATIONARELIKEWISEHIGH!-3/),3!%,ONG,IFE3YN-

THETIC4RANSMISSION/ILDEMONSTRATEDEXCELLENTPROTECTION

ROLLERS

INNER RACE

OUTER RACE


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Output Shaft Bearing

Results4HEOUTPUTSHAFTBEARINGEARNEDSIMILARLYHIGHMERITRATINGSCOMPAREDTOTHEUPPERRIGHTFRONTCOUNTERSHAFT

BEARING4HECUPSANDROLLERSACHIEVEDPERFECTMERITRATINGSFORSCORINGSPALLINGANDCORROSION2ATINGSOFFORPITTINGtrace) and 8 for wear (trace-lightWEREALSOHIGHDEMONSTRATING!-3/),3!%,ONG,IFE

3YNTHETIC4RANSMISSION/ILMAINTAINEDADURABLELUBRICATINGlLM$ISCOLORATIONWASKEPTTOLOWLEVELSFURTHERCONlRMINGTHEPROTECTIONPROVIDEDBYTHELUBRICANT

* Disassembly damage on output bearing cup

Output Shaft BearingMerit Ratings

Condition Cups Rollers

Wear 8 8

Scoring

Pitting

Spalling

Discoloration 8

Corrosion

Roller End Wear - 8

ROLLERS

OUTERRACE

INNERRACE

NOT ABEARINGSURFACE


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Auxiliary Sliding Clutch

Results4HEAUXILIARYSLIDINGCLUTCHLOCKSINHIGHANDLOWRANGEGEARSSUBJECTINGITTOREPEATEDSLIDINGMOTION

#ONSEQUENTLYITREPRESENTSANAREASUSCEPTIBLETOHIGHLEVELSOFWEARANDDISTRESS

4HEAUXILIARYSLIDINGCLUTCHEARNEDAlight-mediumMERITRATINGOFFORWEAR4HERATINGFORCHIPPINGWASVERYhigh and denotes a traceAMOUNTOFMETALREMOVAL!-3/),3!%,ONG,IFE3YNTHETIC4RANSMISSION/ILLIM-

ITEDWEARTOTHEAUXILIARYSLIDINGCLUTCHEFFECTIVELYDESPITETHECOMPONENTSCHALLENGINGOPERATINGCONDITIONS

3LUDGEWASLIKEWISEMINIMIZEDDEMONSTRATINGTHEABILITYOF!-3/),3!%,ONG,IFE3YNTHETIC4RANSMISSIO

/ILTORESISTTHERMALDEGRADATIONANDHELPCOMPONENTSREMAINCLEANTHROUGHOUTAMILEDRAININTERVAL

CLOSEUP

Auxiliary SlidingClutch Merit Ratings

Condition

Wear

Chipping

Sludge 8


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Direct Sliding Clutch

ResultsDirect sliding clutches lock and unlock the appropriate gears to their shafts depending on the gear the driver

SELECTS,IKETHEAUXILIARYSLIDINGCLUTCHTHEYROUTINELYENCOUNTERSLIDINGMOTIONANDAREPRONETOHIGHLEVELSOWEARANDDISTRESS

4HEDIRECTSLIDINGCLUTCHPICTUREDREPRESENTSATYPICALEXAMPLEFROMTHETRANSMISSIONANDEARNEDAWEAR

MERITRATINGOFINDICATINGlightSURFACEFATIGUEANDMETALREMOVAL4HERATINGISCONSISTENTWITHTHEELEVATEDDEMANDREQUIREDFORWEARPROTECTIONOFCLUTCHCOMPONENTSINHEAVYDUTY/42APPLICATIONS4HERATINGFOR

SLUDGEREmECTSAlightAMOUNTANDCONlRMS!-3/),3!%,ONG,IFE3YNTHETIC4RANSMISSION/ILPROVIDEDA

HIGHLEVELOFPROTECTION

CLOSEUP

Direct Sliding ClutchMerit Ratings

Condition

Wear

Sludge


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Synchronizer Assembly Ratings

Results&ORTHETRANSMISSIONTOSHIFTBETWEENLOWANDHIGHRANGETHESYNCHRONIZERASSEMBLYMUSTlRSTMATCHTHE

SPEEDSOFTHEAPPROPRIATEGEARSTOPROVIDESMOOTHGEARENGAGEMENT4HISPROCESSREQUIRESTHElBERMATERIA

ONTHESYNCHRONIZERRINGSTOBEARFRICTIONREPEATEDLYPROVIDINGAMPLEOPPORTUNITYFORWEAR4HElBERMATE-

RIALONTHELOWRANGERINGEARNEDAMERITRATINGOFINDICATINGONLYAtraceAMOUNTOFWEAR-ERITRATINGSFOR

BOTHTHEHIGHANDLOWRANGERINGSTHEMSELVESWERELIKEWISEHIGHINTHEAREASOFWEARANDSLUDGEINDICATING!-3/),3!%,ONG,IFE3YNTHETIC4RANSMISSION/ILPROVIDEDAHIGHLEVELOFPROTECTION

CLOSEUP

Synchronizer Ring High Range

Synchronizer Ring Low Range

Synchronizer RingsMerit Ratings

Condition High Range Low Range

Wear 8 8

Sludge

Discoloration Not Rated 8

Fiber Material Not Rated -ATTED


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Range Shi ft Yoke

Results4HERANGESHIFTYOKESLIDESONTOTHESYNCHRONIZERASSEMBLYANDISRESPONSIBLEFORENGAGINGEITHERHIGHORLOW

RANGE!SARESULTITENCOUNTERSSLIDINGCONTACTREPEATEDLYANDREPRESENTSANAREAPRONETOWEAR!-3/),3!%,ONG,IFE3YNTHETIC4RANSMISSION/ILLIMITEDMETALTOMETALCONTACTANDWEARTOtrace-lightamounts

ANDPROVIDEDSUPERIORPROTECTION4HEMERITRATINGFORDISCOLORATIONWASSIMILARLYHIGH

CLOSEUPS

Range Shi ft Yoke

Merit Ratings

Condition

Wear 8

Discoloration 8


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Output Assembly

ResultsThe output yoke and seal undergo nearly constant rotational stress at varying speeds and loads, presenting

THEOPPORTUNITYFORELEVATEDWEAR4HEOUTPUTSEALEARNEDAWEARMERITRATINGOFINDICATINGtrace-light

DISTRESS4HESEALALSOMAINTAINEDPERCENTGREASEPACKINGDEMONSTRATINGNOLEAKINGTHROUGHOUTTHE

TRANSMISSIONSSERVICEINTERVAL4HEOUTPUTYOKEACHIEVEDSIMILARLYHIGHMERITRATINGSFORWEARlight) and

sludge (trace

Speedo Rotor Assembly Output Seal

Normal conditiondue to exposure

to environment.

Output Yoke & Seal

Merit Ratings

Condition Yoke Seal

Wear 8

Sludge -

Grease Packing -

OUTPUTSHAFT

OPENING


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Conclusion

5SEDOILANALYSISRESULTSANDACOMPLETEVISUALINSPECTIONOFCOMPONENTSFROMATRANSMISSIONBYAN!34-

CALIBRATEDRATERDEMONSTRATETHEEFFECTIVENESSOF!-3/),3!%,ONG,IFE3YNTHETIC4RANSMISSION/ILINOVERTHEROADAPPLICATIONSPRACTICINGMILEDRAININTERVALS4HE!-3/),TRANSMISSIONOILRESISTED

SHEAREFFECTIVELYDESPITEMILESOFRIGOROUSUSE7EARPROTECTIONWASLIKEWISESUPERIORSAMPLESOF!-3/),3!%,ONG,IFE3YNTHETIC4RANSMISSION/ILCONTAINEDVERYLOWLEVELSOFIRONANDCOPPERWEAR

PARTICLESINDICATINGITMAINTAINEDITSPROTECTIVELUBRICATINGlLMTHROUGHOUTSERVICE4OTALACIDNUMBERALSO

REMAINEDSTABLETHROUGHOUTSERVICE

!COMPLETETRANSMISSIONDISASSEMBLYANDVISUALINSPECTIONOFFERSFURTHERPROOFOFPERFORMANCE"EARINGS

RECEIVEDPERFECTMERITRATINGSOFFORSCORINGSPALLINGANDCORROSIONINDICATINGACOMPLETEABSENCEOFDIS-

TRESS'EARSEARNEDPERFECTRATINGSINTHEAREASOFRIPPLINGRIDGINGPITTINGSPALLINGSCORINGANDCORROSIONRatings for other components prone to elevated wear, including the high- and low-range synchronizer rings

ANDTHEOUTPUTSEALARELIKEWISEHIGH.ONEOFTHETRANSMISSIONSOPERATINGWITH!-3/),3!%,ONG,IFE3YNTHETIC4RANSMISSION/ILDEMONSTRATEDANYLEAKINGFROMANYOFTHESEALS4HE!34-CALIBRATEDRATER

DEEMEDALLINSPECTEDCOMPONENTSSUITABLEFORCONTINUEDUSE

2ESULTSOFTHISlELDSTUDYPROVE!-3/),3!%,ONG,IFE3YNTHETIC4RANSMISSION/ILPROVIDESEXCELLENTPROTECTIONINMODERNHEAVILYLOADEDOVERTHEROADMANUALTRANSMISSIONSTHROUGHOUTEXTENDEDMILE

DRAININTERVALS

#ONTACTYOUR!-3/),$EALERFORMOREINFORMATIONON!-3/),PRODUCTSORTOPLACEANORDER9OUMAYALSOORDERDIRECTBYCALLING!-3/),).#ATANDPROVIDINGTHEREFERRALNUMBERLISTEDHERE

Referral #_________________________________

AMSOIL SAE 50 Long Life Synthetic Transmission Oil Field Study in Over the Road Applications

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