2008 JEEP LIBERTY fuel additives

Problems that result from using methanol/gasoline or
E85 Ethanol blends are not the responsibility of the
manufacturer. While MTBE is an oxygenate made from
Methanol, it does not have the negative effects of Metha-
nol.
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 whether
his/her gasoline contains MMT. It is even more impor-
tant to look for gasolines without MMT in Canada,
because MMT can be used at levels higher than thoseallowed in the United States. MMT is prohibited in
Federal and California reformulated 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
conditions and they 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:
STARTING AND OPERATING 357
5

²The use of leaded gas is prohibited by Federal law.
Using leaded gasoline can impair engine performance,
and damage the emission control system.
²An 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 dealer for service assistance.
²The 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:
²Do not inhale exhaust gases. They contain carbon
monoxide, a colorless and odorless gas, which can kill.
Never run the engine in a closed area, such as a
garage, and never sit in a parked vehicle with the
engine running for an extended period. If the vehicle is
stopped in an open area with the engine running for
more than a short period, adjust the ventilation system
to force fresh, outside air into the vehicle.
358 STARTING AND OPERATING

About Your Brakes....................... 308
ABS (Anti-Lock Brake System).........195,310,315
Adding Engine Coolant (Antifreeze).......... 418
Adding Fuel........................... 359
Adding Rear Washer Fluid................. 181
Adding Washer Fluid..................145,181
Additives, Fuel......................... 357
Air Cleaner, Engine (Engine Air Cleaner Filter) . . . 406
Air Conditioner Maintenance............... 411
Air Conditioning........................ 260
Air Conditioning Controls................. 260
Air Conditioning Filter.................271,412
Air Conditioning, Operating Tips............ 272
Air Conditioning Refrigerant............. 411,412
Air Conditioning System.............260,264,411
Air Filter.............................. 406
Air Pressure, Tires....................190,338
Airbag................................ 52
Airbag Deployment....................... 64Airbag Light.......................67,81,204
Airbag Maintenance....................... 66
Alarm, Panic............................ 24
Alarm (Security Alarm).................18,204
Alarm System (Security Alarm)............... 18
Alignment and Balance................... 343
Alterations/Modifications, Vehicle............. 8
Antenna, Satellite Radio................... 255
Antifreeze (Engine Coolant)...........417,418,447
Disposal............................ 419
Anti-Lock Brake System (ABS)............310,315
Anti-Lock Warning Light.................. 195
Anti-Theft Security Alarm (Theft Alarm)........ 18
Anti-Theft System....................... 204
Appearance Care........................ 428
Arming Theft System (Security Alarm)......... 18
Assist, Hill Start........................ 319
Audio Systems (Radio).................... 237
Auto Down Power Windows................ 36
470 INDEX

Power Steering........................ 412
Fluids, Lubricants and Genuine Parts.......... 448
Fog Light Service........................ 445
Fog Lights....................133,136,194,445
Folding Rear Seat........................ 124
Four Wheel Drive
Shifting.....................292,294,298,300
Systems..........................292,298
Four Wheel Drive Operation................ 292
Shifting into Transfer Case Neutral (N)....... 378
Shifting out of Transfer Case Neutral (N)..... 378
Front Axle (Differential)................... 428
Fuel................................. 355
Adding............................. 359
Additives............................ 357
Clean Air............................ 356
Ethanol............................. 356
Filler Cap (Gas Cap).................... 359
Filter............................... 407Gasoline............................ 355
Gauge.............................. 190
Hoses.............................. 421
Materials Added....................... 357
Methanol............................ 356
Octane Rating......................355,448
Requirements......................... 355
Specifications......................... 448
Tank Capacity........................ 447
Fuel System Caution..................... 360
Fueling............................... 359
Fuses................................ 436
Garage Door Opener (HomeLinkt) ........... 155
Gas Cap (Fuel Filler Cap)...............359,400
Gas Gauge (Fuel Gauge)................... 190
Gasoline, Clean Air...................... 356
Gasoline (Fuel)......................... 355
Gasoline, Reformulated................... 356
INDEX 477
10