Jeep Grand Cherokee Operating Information Manual page 324

recommended. Using gasolines that have these
additives may help improve fuel economy, re-
duce emissions, and maintain vehicle perfor-
mance.
Poor quality gasoline can cause problems such
as hard starting, stalling and stumble. If you
experience these problems, try another brand
of gasoline before considering service for the
vehicle.
Methanol
(Methyl) is used in a variety of concentrations
when blended with unleaded gasoline. You may
find fuels containing 3% or more methanol
along with other alcohols called cosolvents.
Problems that result from using methanol/
gasoline blends are not the responsibility of the
manufacturer.
CAUTION!
Do not use gasolines containing Methanol.
Use of these blends may result in starting
and drivability problems and may damage
critical fuel system components.
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Ethanol
The manufacturer recommends that your ve-
hicle be operated on fuel containing no more
than 15% ethanol. Purchasing your fuel from a
reputable supplier may reduce the risk of ex-
ceeding this 15% limit and/or of receiving fuel
with abnormal properties. It should also be
noted that an increase in fuel consumption
should be expected when using ethanol-
blended fuels, due to the lower energy content
of ethanol. Problems that result from using
methanol/gasoline or E-85 ethanol blends are
not the responsibility of the manufacturer.
CAUTION!
Use of fuel with Ethanol content higher than
15% may result in engine malfunction, start-
ing and operating difficulties, and materials
degradation. These adverse effects could
result in permanent damage to your vehicle.
Reformulated Gasoline
Many areas of the country require the use of
cleaner burning gasoline referred to as "Reformu-
lated Gasoline". Reformulated gasoline contains
oxygenates and are specifically blended to re-
duce vehicle emissions and improve air quality.
The use of reformulated gasoline is recom-
mended. Properly blended reformulated gaso-
line will provide improved performance and
durability of engine and fuel system compo-
nents.
E-85 Usage In Non-Flex Fuel Vehicles
Non-Flex Fuel Vehicles (FFV) are compatible
with gasoline containing up to 15% ethanol
(E-15). Gasoline with higher ethanol content
may void the New Vehicle Limited Warranty.
If a Non-FFV vehicle is inadvertently fueled with
E-85 fuel, the engine will have some or all of
these symptoms:
• Operate in a lean mode.
• OBD II "Malfunction Indicator Light" on.
• Poor engine performance.
• Poor cold start and cold drivability.
• Increased risk for fuel system component
corrosion.