2006 JEEP WRANGLER oil filter

MAINTAINING YOUR VEHICLE
CONTENTS

2.4L Engine ...........................266

4.0L Engine ...........................267

Onboard Diagnostic System — OBD II ........268

Emissions Inspection And Maintenance
Programs ............................269

Replacement Parts ......................270

Dealer Service .........................270

Maintenance Procedures ..................271
▫ Engine Oil ..........................271 ▫
Drive Belts — Check Condition And Tension . . 275
▫ Spark Plugs .........................275
▫ Catalytic Converter ....................275
▫ Engine Timing Belt — 2.4L Engine .........277
▫ Ignition Wiring System — 2.4L Engine ......277
▫ Crankcase Emission Control System ........277
▫ Fuel Filter ..........................278
▫ Engine Air Cleaner Filter ................278
▫ Maintenance-Free Battery ................278
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Engine Oil Viscosity (2.4L Engines)
SAE 5W-30 engine oil is recommended for all operating
temperatures. This engine oil improves low tempera-
ture starting and vehicle fuel economy. Your engine oil
filler cap shows the recommended engine oil viscosity
for your vehicle.
Engine Oil Viscosity (4.0L Engines)
SAE 10W-30 engine oil is recommended for all operat-
ing temperatures. This engine oil improves low tem-
perature starting and vehicle fuel economy. Your engine
oil filler cap shows the recommended engine oil vis-
cosity for your vehicle.
Lubricants which do not have both, the engine oil certi-
fication mark and the correct SAE viscosity grade num-
ber should not be used.
Materials Added To Engine Oils
The manufacturer strongly recommends against the ad-
dition of any additives (other than leak detection dyes) to
engine oil. Engine oil is an engineered product and it’s
performance may be impaired by supplemental addi-
tives.
Disposing of Used Engine Oil
Care should be taken in disposing of used engine oil from
your vehicle. Used oil, 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 can be
safely discarded in your area.
Engine Oil Filter
The engine oil filter should be replaced at every engine
oil change.
274 MAINTAINING YOUR VEHICLE

Engine Oil Filter Selection
All of the manufacturer’s engines have a full-flow type
disposable oil filter. Use a filter of this type for replace-
ment. The quality of replacement filters varies consider-
ably. Only high quality filters should be used to assure
most efficient service. Mopar engine oil filters are high
quality oil filters and are recommended.
Drive Belts — Check Condition and Tension
At the mileage shown in the appropriate “Maintenance
Schedule,” check all drive belts for condition and proper
tension. Improper belt tension can cause belt slippage
and failure.
Inspect the drive belt for evidence of cuts, cracks, or
glazing and replace them if there is any sign of damage
which could result in belt failure. If adjustment is re-
quired, adjust the belts according to the specifications
and procedures shown in the Service Manual. Special tools are required to properly measure tension
and to restore belt tension to factory specifications. Also,
check belt routing to make sure there is no interference
between the belts and other engine components.
Spark Plugs
Spark plugs must fire properly to assure engine perfor-
mance and emission control. New plugs should be in-
stalled at the mileage specified in the appropriate main-
tenance chart. The entire set should be replaced if there is
any malfunction due to a faulty spark plug.
Refer to the “Vehicle Emission Control Information” label
in the engine compartment for spark plug information.
Catalytic Converter
The catalytic converter requires the use of unleaded fuel
only. Leaded gasoline will destroy the effectiveness of the
converter as an emission control device.
MAINTAINING YOUR VEHICLE 275
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FLUID CAPACITIES
U.S. Metric
Fuel (Approximate) 19 Gallons 71.9 Liters
Engine Oil with Filter
2.4 Liter Engine (SAE 5W-30, API Certified Engine Oil) 5 Qts 4.7 Liters
4.0 Liter Engine (SAE 10W-30, API Certified Engine Oil) 6 Qts 5.7 Liters
Cooling System *
2.4 Liter Engine (Mopar  Antifreeze/Engine Coolant 5 Year/
100,000 Mile Formula) 9 Qts 8.5 Liters
4.0 Liter Engine (Mopar  Antifreeze/Engine Coolant 5 Year/
100,000 Mile Formula) 10.5 Qts 9.9 Liters
* Includes heater and coolant recovery bottle filled to MAX level.
314 MAINTAINING YOUR VEHICLE

FLUIDS, LUBRICANTS AND GENUINE PARTS
Engine
Component Fluid, Lubricant, or Genuine Part
Engine Coolant Mopar Antifreeze/Coolant 5 Year/100,000 Mile Formula HOAT (Hybrid Or-
ganic Additive Technology)
Engine Oil API Certified SAE 5W-30 Engine Oil is recommended for the 2.4L engine. API Certified SAE 10W-30 Engine Oil is recommended for the 4.0L engine. Meets
the requirements of DaimlerChrysler Material Standard MS-6395.
Spark Plugs Refer to the Vehicle Emission Control Information label in the engine compart- ment.
Oil Filter (2.4L Engine) Mopar Oil Filter (P/N 4105409AB)
Oil Filter (4.0L Engine) Mopar Oil Filter (P/N 05281090)
Fuel Selection 87 Octane
MAINTAINING YOUR VEHICLE 315
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Once a Month
•Check the tire pressure and look for unusual wear or
damage.
•Inspect the battery and clean and tighten the terminals
as required.
•Check the fluid levels of the coolant reservoir, brake
master cylinder, and transmission, and add as needed.
•Check all lights and all other electrical items for correct
operation. At Each Oil Change
•Change the engine oil filter.
•Inspect the exhaust system.
•Inspect brake hoses.
•Check the coolant level, hoses, and clamps.
•After completion of off-road operation, the underside
of the vehicle should be thoroughly inspected. Exam-
ine threaded fasteners for looseness.
320 MAINTENANCE SCHEDULES
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Miles 3,000 6,000 9,000 12,000 15,000
(Kilometers) (5 000) (10 000) (15 000) (20 000) (25 000)
Change the engine oil and engine oil filter, if not
replaced at 3 months. X X XXX
Rotate the tires. X X
Inspect the engine air filter element, replace if
necessary. X
Lubricate the steering linkage tie rod ends. X X X X X
Lubricate the steering and suspension ball joints. X X
Inspect the brake linings. X
Drain and refill the front and rear axle fluid‡ X
322 SCHEDULE “B”
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Miles 18,000 21,000 24,000 27,000 30,000
(Kilometers) (30 000) (35 000) (40 000) (45 000) (50 000)
Change the engine oil and engine oil filter, if not
replaced at 3 months. X X XXX
Rotate the tires. X X X
Inspect the engine air filter element, replace if
necessary. X
Inspect the PCV Valve, and replace if necessary.  X
Replace the spark plugs. X
Lubricate the steering linkage tie rod ends. X X X X X
Lubricate the steering and suspension ball joints. X X X
Inspect the brake linings. X
Drain and refill the front and rear axle fluid‡ X
Inspect the manual transmission fluid, add as nec-
essary. X
Inspect the transfer case fluid, add if necessary. X
SCHEDULE “B” 323
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