Jeep Grand Cherokee 2015, Operating Information Manual

Page: 321 / 878

The manufacturer supports these efforts toward
cleaner air. You can help by using these blends
as they become available.
MMT In Gasoline
Methylcyclopentadienyl Manganese Tricarbonyl
(MMT) is a manganese containing metallic ad-
ditive that is blended into some gasoline to
increase octane. Gasoline blended with MMT
provides no performance advantage beyond
gasoline of the same octane number without
MMT. Gasoline blended with MMT reduces
spark plug life and reduces emission system
performance in some vehicles. The manufac-
turer recommends that gasoline without MMT
be used in your vehicle. The MMT content of
gasoline may not be indicated on the gasoline
pump; therefore, you should ask your gasoline
retailer whether or not his/her gasoline contains
MMT.
Materials Added To Fuel
All gasoline sold in the United States is required
to contain effective detergent additives. Use of
additional detergents or other additives is not
needed under normal conditions and they
would result in additional cost. Therefore, you
should not have to add anything to the fuel.
ADDING FUEL
The gas cap is located behind the fuel filler door,
on the passenger side of the vehicle. If the gas
cap is lost or damaged, be sure the replace-
ment cap has been designed for use with this
vehicle.
NOTE:
When removing the fuel filler cap, lay the
cap tether in the hook, located on the fuel
filler door reinforcement.
1. Press the fuel filler door release switch (lo-
cated on the driver’s side door trim).
2. Open the fuel filler door, and remove the fuel
filler cap.
Fuel Filler Door Release Switch
Fuel Filler Cap (Gas Cap)
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