356
STARTING AND OPERATING
foroptimumperformance.Theuseofpremiumgasoline
is not recommended, as it will not provide any benefit
overregulargasolineintheseengines.
Reformulated Gasoline
Many areas of the country require the use of cleaner
burninggasolinereferredtoas“ReformulatedGasoline.”
Lightsparkknockatlowenginespeedsisnotharmfulto
yourengine.However,continuedheavysparkknockat
highspeedscancausedamageandimmediateserviceis
required.
Reformulatedgasolinecontainsoxygenates,andarespe-
cifically blended to reduce vehicle emissions and im-
proveairquality.
Themanufacturersupportstheuseofreformulatedgaso-
line. Properly blended reformulated gasoline will pro-
videexcellentperformanceanddurabilityofengineand
fuelsystemcomponents.
Poor quality gasoline can cause problems such as hard
starting,stallingandhesitations.Ifyouexperiencethese
symptoms,tryanotherbrandofgasolinebeforeconsid-
eringserviceforthevehicle.
Gasoline/Oxygenate Blends
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-
fications,iftheyareavailable.
Some fuel suppliers blend unleaded gasoline with oxy-
genatessuchas10%ethanol,MTBE,andETBE.Oxygen-
atesarerequiredinsomeareasofthecountryduringthe
winter months to reduce carbon monoxide emissions.
Fuels blended with these oxygenates may be used in
yourvehicle.
| Categories | Jeep Grand Cherokee Manuals, Jeep Manuals |
|---|---|
| Model Year | 2009 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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