2013 JEEP WRANGLER fuel cap

Inflation Pressure
This is the cold tire inflation pressure for your vehicle for
all loading conditions up to full GAWR.
Curb Weight
The curb weight of a vehicle is defined as the total weight
of the vehicle with all fluids, including vehicle fuel, at full
capacity conditions, and with no occupants or cargo
loaded into the vehicle. The front and rear curb weight
values are determined by weighing your vehicle on a
commercial scale before any occupants or cargo are
added.
Loading
The actual total weight and the weight of the front and
rear of your vehicle at the ground can best be determined
by weighing it when it is loaded and ready for operation.The entire vehicle should first be weighed on a commer-
cial scale to insure that the GVWR has not been exceeded.
The weight on the front and rear of the vehicle should
then be determined separately to be sure that the load is
properly distributed over the front and rear axle. Weigh-
ing the vehicle may show that the GAWR of either the
front or rear axles has been exceeded but the total load is
within the specified GVWR. If so, weight must be shifted
from front to rear or rear to front as appropriate until the
specified weight limitations are met. Store the heavier
items down low and be sure that the weight is distributed
equally. Stow all loose items securely before driving.
Improper weight distributions can have an adverse effect
on the way your vehicle steers and handles and the way
the brakes operate.
5
STARTING AND OPERATING 521

MAINTAINING YOUR VEHICLE
CONTENTS
ENGINE COMPARTMENT — 3.6L ..........569
 ONBOARD DIAGNOSTIC SYSTEM — OBD II . .570
▫ Loose Fuel Filler Cap Message ............570
 EMISSIONS INSPECTION AND
MAINTENANCE PROGRAMS .............571
 REPLACEMENT PARTS ..................572
 DEALER SERVICE ..................... .573
 MAINTENANCE PROCEDURES ...........573
▫ Engine Oil ......................... .574
▫ Engine Oil Filter ..................... .576▫
Engine Air Cleaner Filter ................577
▫ Maintenance-Free Battery ...............577
▫ Air Conditioner Maintenance .............579
▫ Body Lubrication .....................582
▫ Windshield Wiper Blades ...............583
▫ Adding Washer Fluid ..................583
▫ Exhaust System ..................... .584
▫ Cooling System ..................... .586
▫ Brake System ....................... .592
▫ Automatic Transmission – If Equipped ......594
7

ONBOARD DIAGNOSTIC SYSTEM — OBD II
Your vehicle is equipped with a sophisticated onboard
diagnostic system called OBD II. This system monitors
the performance of the emissions, engine, and automatic
transmission control systems. When these systems are
operating properly, your vehicle will provide excellent
performance and fuel economy, as well as engine emis-
sions well within current government regulations.
If any of these systems require service, the OBD II system
will turn on the “Malfunction Indicator Light” (MIL). It
will also store diagnostic codes and other information to
assist your service technician in making repairs. Al-
though your vehicle will usually be drivable and not
need towing, see your authorized dealer for service as
soon as possible.
CAUTION!
•Prolonged driving with the MIL on could cause
further damage to the emission control system. It
could also affect fuel economy and drivability. The
vehicle must be serviced before any emissions tests
can be performed.
• If the MIL is flashing while the engine is running,
severe catalytic converter damage and power loss
will soon occur. Immediate service is required.
Loose Fuel Filler Cap Message
After fuel is added, the vehicle diagnostic system can
determine if the fuel filler cap is possibly loose, improp-
erly installed, or damaged. A “gASCAP” message will be
displayed in the odometer. Tighten the gas cap until a
clicking sound is heard. This is an indication that the
570 MAINTAINING YOUR VEHICLE

Engine Oil Viscosity – 3.6L Engine
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 the “Engine Com-
partment” illustration in this section.
NOTE:SAE 5W-30 engine oil approved to Fiat 9.55535-S1
or Fiat 9.55535-S3 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
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 with a new filter
at every engine oil change.
576 MAINTAINING YOUR VEHICLE

FLUID CAPACITIES
U.S.Metric
Fuel (Approximate) — Two Door Models 18.6 Gallons70 Liters
Fuel (Approximate) — Four Door Models 22.5 Gallons85 Liters
Engine Oil with Filter
3.6L Engine 6 Quarts5.6 Liters
Cooling System *
3.6L Engine (MOPAR® Antifreeze/Engine Coolant
10 Year/150,000 Mile Formula or equivalent)10.5 Quarts 9.9 Liters
* Includes coolant recovery bottle filled to MAX level.
618 MAINTAINING YOUR VEHICLE

FLUIDS, LUBRICANTS AND GENUINE PARTS
Engine
ComponentFluid, Lubricant, or Genuine Part
Engine Coolant We recommend you use MOPAR® Antifreeze/Coolant 10 Year/
150,000 Mile Formula OAT (Organic Additive Technology) or equivalent
meeting the requirements of Chrysler Material Standard MS-12106.
Engine Oil We recommend you use API Certified SAE 5W-20 Engine Oil, meeting the
requirements of Chrysler Material Standard MS-6395. Refer to your engine
oil filler cap for correct SAE grade.
Engine Oil Filter We recommend you use MOPAR® Engine Oil Filter or equivalent.
Spark Plugs We recommend you use MOPAR® Spark Plugs (Gap 0.043 in [1.1 mm])
Fuel Selection 87 Octane
7
MAINTAINING YOUR VEHICLE 619

Automatic Transmission....................424
Adding Fluid ......................... .597
Fluid and Filter Changes ..................597
Fluid Change ......................... .597
Fluid Level Check ...................... .595
Fluid Type ........................... .594
Special Additives ...................... .595
Autostick .............................. .431
Auxiliary Electrical Outlet (Power Outlet) ........184
Auxiliary Power Outlet .....................184
Axle Lock .............................. .438
Battery ................................ .577
Keyless Transmitter Replacement (RKE) ........28
Belts, Seat ...............................50
Body Mechanism Lubrication .................582
Brake Assist System ...................... .462
Brake Control System, Electronic ..............460Brake System
........................... .592
Anti-Lock (ABS) ....................... .459
Master Cylinder ....................... .593
Parking ............................. .456
Warning Light ........................ .306
Brake/Transmission Interlock .................424
Break-In Recommendations, New Vehicle .........99
Bulb Replacement ........................ .614
Bulbs, Light ............................ .103
Calibration, Compass ..................... .322
Capacities, Fluid ......................... .618
Caps, Filler Fuel ................................ .517
Power Steering ........................ .456
Radiator (Coolant Pressure) ................589
Carbon Monoxide Warning ..................100
Cargo Light ............................ .174
Car Washes ............................ .601
10
INDEX 645

Extender, Seat Belt.........................61
Exterior Lights .......................... .103
Fabric Care ............................. .603
Fabric Top ............................. .604
Filters Air Cleaner .......................... .577
Air Conditioning ...................... .407
Engine Oil ........................... .576
Engine Oil Disposal .....................576
Flashers Hazard Warning ....................... .546
Turn Signal .......................... .103
Flash-To-Pass ........................... .172
Flooded Engine Starting ....................416
Fluid Capacities ......................... .618
Fluid Leaks ............................ .104
Fluid Level Checks ....................... .599
Engine Oil ........................... .574Manual Transmission
....................598
Power Steering ........................ .456
Fluids, Lubricants and Genuine Parts ...........619
Fog Lights ............................. .172
Fog Light Service ........................ .616
Fold and Tumble Rear Seat ..................163
Folding Rear Seat ........................ .165
Folding Windshield ....................... .290
Four-Way Hazard Flasher ...................546
Four Wheel Drive ........................ .433
Four Wheel Drive Operation .................433
Freeing A Stuck Vehicle .....................559
Front Axle (Differential) .....................599
Fuel .................................. .513
Adding ............................. .517
Additives ............................ .515
Clean Air ............................ .513
Ethanol ............................. .514
Filler

Cap (Gas Cap) .....................517
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INDEX 649