2010 JEEP GRAND CHEROKEE fuel additives

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 would result in additional cost. Therefore,
you should not have to add anything to the fuel.
Fuel System Cautions
CAUTION!
Follow these guidelines to maintain your vehicle’s
performance:
•The use of leaded gas is prohibited by Federal law.
Using leaded gasoline can impair engine perfor-
mance and damage the emission control system.(Continued)
CAUTION! (Continued)
•An out-of-tune engine, or certain fuel or ignition
malfunctions, can cause the catalytic converter to
overheat. If you notice a pungent burning odor or
some light smoke, your engine may be out of tune or
malfunctioning and may require immediate service.
Contact your authorized dealer for service assistance.
•The use of fuel additives which are now being
sold as octane enhancers is not recommended.
Most of these products contain high concentra-
tions of Methanol. Fuel system damage or vehicle
performance problems resulting from the use of
such fuels or additives is not the responsibility of
the manufacturer.
NOTE: Intentional tampering with emissions control
systems can result in civil penalties being assessed
against you.
318 STARTING AND OPERATING

Engine Oil Viscosity (3.7L and 5.7L Engines)
SAE 5W-20 engine oil is recommended for all operating
temperatures. This engine oil improves low temperature
starting and vehicle fuel economy.
The engine oil filler cap also shows the recommended
engine oil viscosity for your vehicle. For information on
engine oil filler cap location, refer to “Engine Compart-
ment” in “Maintaining Your Vehicle” for further informa-
tion.
NOTE:Vehicles equipped with a 5.7L engine must use
SAE 5W-20 oil. Failure to do so may result in improper
operation of the Multiple Displacement System (MDS).
Refer to “Multi-Displacement System” in “Starting and
Operating” for further information.
Lubricants, which do not have both the engine oil certi-
fication mark and the correct SAE viscosity grade num-
ber, should not be used.
Synthetic Engine Oils
You may use synthetic engine oils if the recommended oil
quality requirements are met, and the recommended main-
tenance intervals for oil and filter changes are followed.
Materials Added to Engine Oils
The manufacturer strongly recommends against the ad-
dition of any additives (other than leak detection dyes) to
the engine oil. Engine oil is an engineered product and its
performance may be impaired by supplemental
additives.
Disposing of Used Engine Oil and Oil Filters
Care should be taken in disposing of used engine oil and
oil filters from your vehicle. Used oil and oil filters,
indiscriminately discarded, can present a problem to the
environment. Contact your local authorized dealer, ser-
vice station, or governmental agency for advice on how
and where used oil and oil filters can be safely discarded
in your area.
7
MAINTAINING YOUR VEHICLE 371

Special Additives...................... 389
Torque Converter ...................... 251
Autostick ............................. 246
Auxiliary Electrical Outlet (Power Outlet) ...... 137
Auxiliary Power Outlet ................... 137
Battery ............................... 373
Keyless Transmitter Replacement (RKE) ....... 24
Saving Feature (Protection) ............... 106
Belts, Seat ............................ 36,73
Body Mechanism Lubrication ............... 375
B-Pillar Location ........................ 291
Brake Assist System ...................... 271
Brake Control System, Electronic ............. 270
Brake Fluid ............................ 386
Brake System ........................... 385
Anti-Lock (ABS) .................... 268,270
Fluid Check .......................... 386
Master Cylinder ....................... 386 Parking
............................. 265
Warning Light ........................ 158
Brake/Transmission Interlock ............... 244
Break-In Recommendations, New Vehicle ........ 71
Bulb Replacement ..................... 406,407
Bulbs, Light ............................ 74
Calibration, Compass ..................... 177
Camera, Rear ........................... 125
Capacities, Fluid ........................ 413
Caps, Filler Fuel ............................... 320
Power Steering ........................ 264
Radiator (Coolant Pressure) ............... 383
Car Washes ............................ 393
Carbon Monoxide Warning ...............72,319
Cargo Area Cover ....................... 144
Cargo Area Features ...................... 143
Cargo Compartment ...................... 143
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INDEX 447