2015 JEEP WRANGLER fuel additives

therefore, you should ask your gasoline retailer whether
the gasoline contains MMT. 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:
(Continued)
CAUTION!(Continued)
•The use of leaded gas is prohibited by Federal law.
Using leaded gasoline can impair engine perfor-
mance and damage the emissions 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 ser-
vice. 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 perfor-
mance problems resulting from the use of such
fuels or additives is not the responsibility of the
manufacturer.
528 STARTING AND OPERATING

Engine Oil Viscosity — 3.6L Engine
MOPAR® SAE 5W-20 engine oil approved to Chrysler
Material Standard MS-6395 such as Pennzoil®, Shell
Helix® or equivalent 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 the “Engine Com-
partment” illustration in this section.
NOTE:MOPAR® SAE 5W-30 engine oil approved to
Chrysler Material Standard MS-6395 such as Pennzoil®,
Shell Helix® or equivalent may be used when SAE 5W-20
engine oil meeting MS-6395 is not available.
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 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 authorized dealer, service sta-
tion or governmental agency for advice on how and where
used oil and oil filters can be safely discarded in your area.
590 MAINTAINING YOUR VEHICLE

About Your Brakes........................468
ABS (Anti-Lock Brake System)................309
Adding Engine Coolant (Antifreeze)............614
Adding Fuel.............................530
Additives, Fuel...........................528
Air bag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
Air Bag
Advance Front Air Bag....................64
Air bag Operation.......................67
Air Bag Warning Light....................72
Enhanced Accident Response................72
Event Data Recorder (EDR).................75
Front Air Bag . . . . . . . . . . . . . . . . . . . . . . . . . . .63
If A Deployment Occurs...................70
Knee Impact Bolsters.....................68
Maintaining Your Air Bag System............74
Air bag Deployment........................63
Air bag Light.............................72
Air bag Maintenance........................74
Air Cleaner, Engine (Engine Air Cleaner Filter) . . . .591
Air Conditioner Maintenance.................598
Air Conditioning..........................400
Air Conditioning Controls...................400
Air Conditioning Filter.....................413
Air Conditioning, Operating Tips..............412
Air Conditioning Refrigerant.................598
Air Conditioning System....................400
Air Pressure, Tires.........................500
Alarm Light.............................312
Alarm (Security Alarm)......................20
Alterations/Modifications, Vehicle...............9
Antenna, Satellite Radio.....................359
Antifreeze (Engine Coolant)..................613
Disposal..............................616
Anti-Lock Warning Light....................309
Appearance Care.........................625
Arming System (Security Alarm)...............20
Assistance Towing.........................129
672 INDEX

Flashers
Hazard Warning........................560
Turn Signal...........................103
Flash-To-Pass............................170
Flooded Engine Starting....................422
Fluid, Brake.............................649
Fluid Capacities..........................646
Fluid Leaks.............................103
Fluid Level Checks........................625
Engine Oil............................588
Manual Transmission....................623
Power Steering.........................465
Fluids, Lubricants and Genuine Parts...........647
Fog Lights..............................170
Fog Light Service.........................644
Fold and Tumble Rear Seat..................161
Folding Rear Seat.........................163
Folding Windshield........................291
Four-Way Hazard Flasher...................560
Four Wheel Drive.........................441
Four Wheel Drive Operation.................441
Freeing A Stuck Vehicle.....................574
Front Axle (Differential).....................625
Fuel...................................525
Adding..............................530
Additives.............................528
Clean Air.............................526
Ethanol..............................526
Filler Cap (Gas Cap).....................530
Gasoline..............................525
Gauge...............................306
Materials Added........................528
Methanol.............................526
Octane Rating..........................525
Requirements..........................525
Specifications..........................647
Tank Capacity..........................646
Fueling................................530
678 INDEX