STARTING AND OPERATING
315
FUEL REQUIREMENTS
foroptimumperformance.Theuseofpremiumgasoline
is not recommended, as it will not provide any benefit
overregulargasolineintheseengines.
3.7
Engine
All engines (except 5.7L engines) are de-
signed to meet all emissions regulations Lightsparkknockatlowenginespeedsisnotharmfulto
and provide excellent fuel economy and yourengine.However,continuedheavysparkknockat
performancewhenusinghigh-qualityun- highspeedscancausedamage,andimmediateserviceis
leaded “regular” gasoline having an oc-
tane rating of 87. The use of premium
gasolineisnotrecommended,asitwillnotprovideany
benefitoverregulargasolineintheseengines.
required.
Poor quality gasoline can cause problems such as hard
starting,stallingandhesitations.Ifyouexperiencethese
symptoms,tryanotherbrandofgasolinebeforeconsid-
eringserviceforthevehicle.
5
5.7L
Engine
The 5.7L engine is designed to meet all
emissionsregulationsandprovidesatisfac-
toryfueleconomyandperformancewhen
usinghigh-qualityunleadedgasolinehav-
inganoctanerangeof87to89.Themanu-
facturerrecommendstheuseof89octane
Over40automanufacturersworldwidehaveissuedand
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-
fications,iftheyareavailable.
| Categories | Jeep Grand Cherokee Manuals, Jeep Manuals |
|---|---|
| Model Year | 2010 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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