ASTMD6984-17isastandardtestmethoddevelopedtoevaluatetheperformanceofautomotiveengineoilsintheSequenceIIIF,spark-ignitionengine.Thistestmethodisspecificallydesignedtoassesstheabilityofengineoilstoprovideadequateprotectionagainstoxidation,wear,anddepositformationunderhigh-temperatureoperatingconditions.TheSequenceIIIFtestisconductedusingaspeciallyconfiguredengineundercontrolledlaboratoryconditionstosimulatesevereservicetypicalofmodernpassengercarandlight-dutytruckapplications.Thetestmeasuresvariousperformanceparameters,includingoilviscosityincrease,wearmetalaccumulation,andenginesludgeandvarnishdeposits,todeterminetheoil'sabilitytomaintainenginecleanlinessandprotectcriticalenginecomponents.Theresultsobtainedfromthistestmethodareusedtoestablishperformanceclaimsandmeetindustryspecificationsforengineoilformulations.Thestandardprovidesdetailedproceduresfortestpreparation,execution,andevaluationtoensureconsistentandreliableresultsacrossdifferenttestinglaboratories.
