2009 JEEP LIBERTY fuel additives

of gasoline may not be indicated on the gasoline pump;
therefore, you should ask your gasoline retailer whether
the gasoline contains MMT. It is even more important to
look for gasolines 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 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!
Use the following guidelines to maintain your vehi-
cle’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.
368 STARTING AND OPERATING

•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.
•Do 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.
•Guard against carbon monoxide with proper mainte-
nance. Have the exhaust system inspected every time
the vehicle is raised. Have any abnormal conditions
repaired promptly. Until repaired, drive with all side
windows fully open.
•Keep the trunk closed when driving your vehicle to
prevent carbon monoxide and other poisonous ex-
haust gases from entering the vehicle.
STARTING AND OPERATING 369
5

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 engine. For information on engine oil filler cap
location, refer to “Engine Compartment” in this section.
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 provided the recom-
mended oil quality requirements are met, and the recom-
mended maintenance intervals for oil and filter changes
are followed.
Materials Added to Engine Oil
The manufacturer strongly recommends against the addi-
tion of any additives (other than leak detection dyes) to theengine 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 authorized dealer, service
station, or governmental agency for advice on how and
where used oil and oil filters can be safely discarded in
your area.
Engine Oil Filter
The engine oil filter should be replaced at every engine
oil change.
NOTE:
For best access to the oil filter, a drive on hoist
should be used instead of a chassis hoist (3.7L Only).
MAINTAINING YOUR VEHICLE 415
7

About Your Brakes....................... 320
ABS (Anti-Lock Brake System) ............321,324
Adding Engine Coolant (Antifreeze) .......... 425
Adding Fuel ........................... 370
Additives, Fuel ......................... 368
Air Cleaner, Engine (Engine Air Cleaner Filter) . . . 416
Air Conditioner Maintenance ............... 418
Air Conditioning ........................ 274
Air Conditioning Controls ................. 274
Air Conditioning Filter .................284,419
Air Conditioning, Operating Tips ............ 285
Air Conditioning Refrigerant .............418,419
Air Conditioning System .............274,277,418
Air Filter .............................. 416
Air Pressure, Tires ....................... 347
Airbag ................................ 53
Airbag Deployment ....................... 65
Airbag Light ....................... 68,83,215
Airbag Maintenance ....................... 67 Alarm, Panic
............................ 24
Alarm (Security Alarm) .................18,214
Alarm System (Security Alarm) ............... 18
Alterations/Modifications, Vehicle ............. 8
Antenna, Satellite Radio ................... 267
Antifreeze (Engine Coolant) ...........424,425,450
Disposal ............................ 427
Anti-Lock Brake System (ABS) ............321,324
Anti-Lock Warning Light .................. 206
Anti-Theft Security Alarm (Theft Alarm) ........ 18
Anti-Theft System ....................... 214
Appearance Care ........................ 435
Arming Theft System (Security Alarm) ......... 18
Assist, Hill Start ........................ 328
Assistance Towing ....................... 108
Auto Down Power Windows ................ 35
Auto Unlock, Doors ....................... 32
Automatic Dimming Mirror ................. 90
Automatic Door Locks ................... 31,32
480 INDEX

Engine Oil........................ 415,451
Engine Oil Disposal .................... 415
Finish Care ............................ 435
Flashers Hazard Warning ....................... 394
Turn Signal ................ 83,146,205,448,449
Flash-To-Pass ........................... 147
Flipper Glass, Liftgate ..................... 41
Flooded Engine Starting ................... 292
Floor Console .......................... 185
Fluid, Brake ........................... 452
Fluid Capacities ......................... 450
Fluid Leaks ............................. 83
Fluid Level Checks .................... 431,432
Automatic Transmission ................. 430
Brake .............................. 429
Cooling System ....................... 423
Engine Oil ........................... 413
Power Steering ........................ 319 Fluids, Lubricants and Genuine Parts
.......... 451
Fog Light Service ........................ 448
Fog Lights .................... 142,145,205,448
Folding Rear Seat ........................ 133
Four Wheel Drive Shifting ..................... 302,304,308,310
Systems .......................... 302,308
Four Wheel Drive Operation ................ 302
Shifting into Transfer Case Neutral (N) ....... 389
Shifting out of Transfer Case Neutral (N) ..... 389
Front Axle (Differential) ................... 432
Fuel ................................. 365
Adding ............................. 370
Additives ............................ 368
Clean Air ............................ 366
Ethanol ............................. 366
Filler Cap (Gas Cap) .................... 370
Gasoline ............................ 365
Gauge .............................. 202
486 INDEX