fuel additives JEEP COMMANDER 2010 1.G Owners Manual

•OBD II “Malfunction Indicator Light” on
•poor engine performance
•poor cold start and cold drivability
•increased risk for fuel system component corrosion
To fix a Non-FFV vehicle inadvertently fueled once with
E-85 perform the following:
•drain the fuel tank (see your authorized dealer)
•change the engine oil and oil filter
•disconnect and reconnect the battery to reset the
engine controller memory
More extensive repairs will be required for prolonged
exposure to E-85 fuel.
MMT In Gasoline
MMT is a manganese containing metallic additive 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 manufacturer 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 if the
gasoline contains MMT.
It is even more important to look for gasoline without
MMT in Canada, because MMT can be used at levels
higher than those allowed in the United States.
MMT is prohibited in Federal and California reformu-
lated gasoline.
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
316 STARTING AND OPERATING

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 performance
and damage the emission control system.
•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 concentrations 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.
Carbon Monoxide Warnings
WARNING!
Carbon monoxide (CO) in exhaust gases is deadly.
Follow the precautions below to prevent carbon
monoxide poisoning.
5
STARTING AND OPERATING 317

Engine Oil Viscosity
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 this section.
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 Section 5 for
more details.
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
maintenance 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 the7
MAINTAINING YOUR VEHICLE 365

Fluid Type........................... 383
Special Additives ...................... 383
Torque Converter ...................... 254
Autostick ............................. 250
Auxiliary Electrical Outlet (Power Outlet) ...... 140
Auxiliary Power Outlet ................... 140
Battery ............................... 367
Emergency Starting ..................... 351
Keyless Transmitter Replacement (RKE) ....... 24
Saving Feature (Protection) ............... 110
Belts, Seat ............................ 40,75
Body Mechanism Lubrication ............... 369
B-Pillar Location ........................ 290
Brake Assist System ...................... 273
Brake Control System, Electronic ............. 272
Brake Fluid ............................ 380
Brake System ........................... 379
Anti-Lock (ABS) .................... 269,272
Fluid Check .......................... 380 Master Cylinder
....................... 380
Parking ............................. 267
Warning Light ........................ 160
Brake/Transmission Interlock ............... 247
Break-In Recommendations, New Vehicle ........ 73
Bulb Replacement ..................... 400,401
Bulbs, Light ............................ 76
Calibration, Compass ..................... 179
Camera, Rear ........................... 128
Capacities, Fluid ........................ 407
Caps, Filler Fuel ............................... 318
Power Steering ........................ 266
Radiator (Coolant Pressure) ............... 377
Car Washes ............................ 387
Carbon Monoxide Warning ...............74,317
Cargo Area Features ...................... 147
Cargo Compartment ...................... 147
Luggage Carrier ....................... 150
10
INDEX 443