336
STARTING AND OPERATING
FUEL REQUIREMENTS
All engines (except 5.7L engines) are de-
signed to meet all emissions regulations
and provide excellent fuel economy and
Poor quality gasoline can cause problems such as hard
starting,stallingandhesitations.Ifyouexperiencethese
symptoms,tryanotherbrandofgasolinebeforeconsid-
eringserviceforthevehicle.
performancewhenusinghighqualityun-
leaded “regular” gasoline having an oc-
tane rating of 87. The use of premium
gasolineisnotrecommended.Undernormalconditions,
the use of premium gasoline will not provide a benefit
overhighqualityregulargasoline,andinsomecircum-
stancesmayresultinpoorerperformance.
Over40automanufacturer’sworldwidehaveissuedand
endorsed consistent gasoline specifications (the World-
wide Fuel Charter, WWFC) to define fuel properties
necessary to deliver enhanced emissions, performance,
anddurabilityforyourvehicle.Themanufacturerrecom-
mends the use of gasoline that meets the WWFC speci-
ficationsiftheyareavailable.
Lightsparkknockatlowenginespeedsisnotharmfulto
yourengine.However,continuedheavysparkknockat
highspeedscancausedamageandimmediateserviceis
required.
Reformulated Gasoline
Many areas of the country require the use of cleaner
burninggasolinereferredtoas“ReformulatedGasoline.”
Reformulatedgasolinecontainsoxygenates,andarespe-
cifically blended to reduce vehicle emissions and im-
proveairquality.
| Categories | Jeep Manuals, Jeep Wrangler Manuals |
|---|---|
| Model Year | 2008 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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