Fig. 3 JEEP CHEROKEE 1995 Service Repair Manual

LUBRICATION AND MAINTENANCE
CONTENTS
page page
CHASSIS AND BODY COMPONENTS........ 28
DRIVETRAIN........................... 22
ENGINE MAINTENANCE................... 15GENERAL INFORMATION.................. 1
JUMP STARTING, TOWING AND HOISTING.... 9
MAINTENANCE SCHEDULES................ 4
GENERAL INFORMATION
INDEX
page page
Classification of Lubricants................... 2
Components Requiring No Lubrication........... 2
Fluid Capacities........................... 3
Fuel Requirements......................... 1International Symbols....................... 1
Introduction.............................. 1
Lubrication and Replacement Parts
Recommendation......................... 2
INTRODUCTION
Lubrication and maintenance is divided into re-
quired and recommended service tasks. The required
service tasks must be completed to verify the emis-
sion controls function correctly. The recommended
service tasks should be completed to maintain safety
and durability.
This information will assist the service personnel
in providing maximum protection for each owner's
vehicle.
Conditions can vary with individual driving habits.
It is necessary to schedule maintenance as a time in-
terval as well as a distance interval.
It is the owner's responsibility to determine the ap-
plicable driving condition. Also to have the vehicle
serviced according to the maintenance schedule, and
to pay for the necessary parts and labor.
Additional maintenance and lubrication informa-
tion is listed in the Owner's Manual.
INTERNATIONAL SYMBOLS
Chrysler Corporation uses international symbols to
identify engine compartment lubricant and fluid in-
spection and fill locations (Fig. 1).
FUEL REQUIREMENTS
All gasoline engines require the use of unleaded
gasoline to reduce the potentially harmful effects of
lead to the environment. Also unleaded fuel is neces-
sary to prevent damage to the catalytic converter/O2sensor. The fuel must have a minimum octane rating
of 87 based on the (R + M)/2 calculation method.
CAUTION: UNLEADED FUEL ONLY must be used in
vehicles equipped with a catalyst emission control
system. All vehicles have reminders printed on the
instrument panel below the fuel gauge and on the
fuel filler door. The vehicles also have fuel filler
tubes that are specially designed to accept only the
small-diameter dispensing nozzles. It is illegal to
bypass the design of an unleaded fuel filler tube
and contaminate the fuel system.
Fig. 1 International Symbols
JLUBRICATION AND MAINTENANCE 0 - 1

CLASSIFICATION OF LUBRICANTS
Lubricating fluids and chassis lubricants are clas-
sified according to standards recommended by the:
²Society of Automotive Engineers (SAE)
²American Petroleum Institute (API)
²National Lubricating Grease Institute (NLGI)
ENGINE OIL
API CERTIFICATION MARK
For maximum engine protection during all driving
conditions, install an engine oil that contains the API
Certification Mark (Fig. 2). The API Certification
Mark indicates that the oil is certified to meet the
most critical requirements established by the manu-
facturer.
Conformance to API specifications is determined by
tests that measure the ability of an oil to control:
²Engine wear.
²Bearing corrosion.
²Sludge.
²Varnish.
²Oil thickening.
²Rust.
²Piston deposits.
SAE VISCOSITY GRADE
An SAE viscosity grade is used to specify the vis-
cosity of engine oil. SAE 30 specifies a single viscos-
ity engine oil. Engine oils also have multiple
viscosities. These are specified with a dual SAE vis-
cosity grade which indicates the cold-to-hot tempera-
ture viscosity range.
API SERVICE GRADE CERTIFIED
The API Service Grade specifies the type of perfor-
mance the engine oil is intended to provide. The API
Service Grade specifications also apply to energy con-
serving engine oils.
Use an engine oil that is API Service Grade Certi-
fied or an oil that conforms to the API Service Grade
SH or SH/CD. MOPAR provides engine oils that con-
form to all of these service grades.
GEAR LUBRICANTS
A dual grade is also used to specify the viscosity of
multi-purpose gear lubricants.
The API grade designation identifies gear lubri-
cants in terms of recommended usage.
CHASSIS COMPONENT AND WHEEL BEARING
LUBRICANTS
The chassis and wheel bearing lubricants that are
recommended are identified by the NLGI Certifica-
tion Symbol. The symbol contains a coded designa-
tion. This identifies the usage and quality of the
lubricant.
The letter G within the symbol designates wheel
bearing lubricant. The letter L designates chassis lu-
bricant. When the letters are combined, the lubricant
can be used for dual applications. Use only lubricants
that display the NLGI Certification Symbol (Fig. 3).
LUBRICATION AND REPLACEMENT PARTS
RECOMMENDATION
Jeep vehicles are engineered to provide many years
of dependable operation. However, lubrication service
and maintenance are required for each vehicle. When
necessary, MOPARtbrand lubricants and genuine re-
placement parts are highly recommended. Each MO-
PAR brand lubricant and replacement part is
designed and to provide dependability and long ser-
vice life.
COMPONENTS REQUIRING NO LUBRICATION
There are many components that should not be lu-
bricated. The components that should not be lubri-
cated are:
²Air pumps.
²Generator bearings.
²Distributors.
²Drive belts.
²Drive belt idler pulleys.
²Rubber bushings.
²Starter motor bearings.
²Suspension strut bearings.
²Throttle control cables.
²Throttle linkage ball joints.
²Water pump bearings.
Fig. 2 The API Engine Oil Certification Mark
Fig. 3 NLGI Lubricant Container Certification/
Identification Symbol
0 - 2 LUBRICATION AND MAINTENANCEJ

JUMP STARTING, TOWING AND HOISTING
INDEX
page page
Four-Wheel-Drive Vehicle Towing............. 12
Ground Clearance and Ramp Angle............ 11
Hoisting Recommendations.................. 10
Jump Starting Procedure..................... 9Towing Recommendations................... 10
Towing When Keys Are Not Available.......... 13
Two-Wheel-Drive Vehicle TowingÐXJ.......... 11
JUMP STARTING PROCEDURE
WARNING: DO NOT ATTEMPT TO PUSH OR TOW A
VEHICLE TO START THE ENGINE. UNBURNED
FUEL COULD ENTER THE EXHAUST CATALYTIC
CONVERTER AND IGNITE AFTER THE ENGINE IS
STARTED. THIS COULD CAUSE THE CONVERTER
TO OVERHEAT AND RUPTURE.
WARNING: REVIEW ALL SAFETY PRECAUTIONS
AND WARNINGS IN GROUP 8A, BATTERY/START-
ING/CHARGING SYSTEMS DIAGNOSTICS.
DO NOT JUMP START A FROZEN BATTERY, PER-
SONAL INJURY CAN RESULT.
DO NOT JUMP START WHEN MAINTENANCE
FREE BATTERY INDICATOR DOT IS YELLOW OR
BRIGHT COLOR.
DO NOT JUMP START A VEHICLE WHEN THE
BATTERY FLUID IS BELOW THE TOP OF LEAD
PLATES.
DO NOT ALLOW JUMPER CABLE CLAMPS TO
TOUCH EACH OTHER WHEN CONNECTED TO A
BOOSTER SOURCE.
DO NOT USE OPEN FLAME NEAR BATTERY.
REMOVE METALLIC JEWELRY WORN ON HANDS
OR WRISTS TO AVOID INJURY BY ACCIDENTAL
ARCING OF BATTERY CURRENT.
WHEN USING A HIGH OUTPUT BOOSTING DE-
VICE, DO NOT ALLOW BATTERY VOLTAGE TO EX-
CEED 16 VOLTS. REFER TO INSTRUCTIONS
PROVIDED WITH DEVICE BEING USED.
CAUTION: When using another vehicle as a
booster, do not allow vehicles to touch. Electrical
systems can be damaged on either vehicle.
TO JUMP START A DISABLED VEHICLE:
(1) Raise hood on disabled vehicle and visually in-
spect engine compartment for:
²Battery cable clamp condition, clean if necessary.
²Frozen battery.
²Yellow or bright color test indicator, if equipped.
²Low battery fluid level.
²Generator drive belt condition and tension.²Fuel fumes or leakage, correct if necessary.
CAUTION: If the cause of starting problem on dis-
abled vehicle is severe, damage to booster vehicle
charging system can result.
(2) When using another vehicle as a booster
source, turn off all accessories, place gear selector in
park or neutral, set park brake and operate engine at
1200 rpm.
(3) On disabled vehicle, place gear selector in park
or neutral and set park brake. Turn off all accesso-
ries.
(4) Connect jumper cables to booster battery. RED
clamp to positive terminal (+). BLACK clamp to neg-
ative terminal (-). DO NOT allow clamps at opposite
end of cables to touch, electrical arc will result. Re-
view all warnings in this procedure.
(5) On disabled vehicle, connect RED jumper cable
clamp to positive (+) terminal. Connect BLACK
jumper cable clamp to engine ground as close to the
ground cable attaching point as possible (Fig. 1).
Fig. 1 Jumper Cable ConnectionsÐTypical
JLUBRICATION AND MAINTENANCE 0 - 9

CAUTION: Do not crank starter motor on disabled
vehicle for more than 15 seconds, starter will over-
heat and could fail.
(6) Allow battery in disabled vehicle to charge to at
least 12.4 volts (75%charge) before attempting to
start engine. If engine does not start within 15 sec-
onds, stop cranking engine and allow starter to cool
(15 min.), before cranking again.
DISCONNECT CABLE CLAMPS AS FOLLOWS:
²Disconnect BLACK cable clamp from engine
ground on disabled vehicle.
²When using a Booster vehicle, disconnect BLACK
cable clamp from battery negative terminal. Discon-
nect RED cable clamp from battery positive terminal.
²Disconnect RED cable clamp from battery positive
terminal on disabled vehicle.
PORTABLE STARTING UNIT
There are many types of portable starting units
available for starting engines. Follow the manufac-
turer's instructions and observe the listed precau-
tions when involved in any engine starting
procedure.
HOISTING RECOMMENDATIONS
Refer to the Owner's Manual for emergency vehicle
lifting procedures.
FLOOR JACK
When properly positioned, a floor jack can be used
to lift a Jeep vehicle (Fig. 2 and 3). Support the ve-
hicle in the raised position with jack stands at the
front and rear ends of the frame rails.
CAUTION: Do not attempt to lift a Jeep vehicle with
a floor jack positioned under:
²An axle tube.
²A body side sill.
²A steering linkage component.
²A drive shaft.
²The engine or transmission oil pan.
²The fuel tank.
²A front suspension arm.
Use the correct sub-frame rail or frame rail
lifting locations only (Fig. 2 and 3).
HOIST
A vehicle can be lifted with:
²A single-post, frame-contact hoist.
²A twin-post, chassis hoist.
²A ramp-type, drive-on hoist.
When a frame-contact type hoist is used, ver-
ify that the lifting pads are positioned properly
(Fig. 2 and 3).WARNING: THE HOISTING AND JACK LIFTING
POINTS PROVIDED ARE FOR A COMPLETE VEHI-
CLE. WHEN A CHASSIS OR DRIVETRAIN COMPO-
NENT IS REMOVED FROM A VEHICLE, THE
CENTER OF GRAVITY IS ALTERED MAKING SOME
HOISTING CONDITIONS UNSTABLE. PROPERLY
SUPPORT OR SECURE VEHICLE TO HOISTING DE-
VICE WHEN THESE CONDITIONS EXIST.
TOWING RECOMMENDATIONS
A vehicle equipped with SAE approved sling-type
towing equipment can be used to tow all Jeep vehi-
cles. When towing a 4WD vehicle using a wheel-lift
towing device, use a tow dolly under the opposite end
of the vehicle. A vehicle with flat-bed device can also
be used to transport a disabled vehicle (Fig. 4).
A wooden crossbeam may be required for proper
connection when using the sling-type, front-end tow-
ing method.
SAFETY PRECAUTIONS
²Secure loose and protruding parts.
²Always use a safety chain system that is indepen-
dent of the lifting and towing equipment.
²Do not allow towing equipment to contact the dis-
abled vehicle's fuel tank.
²Do not allow anyone under the disabled vehicle
while it is lifted by the towing device.
Fig. 2 Vehicle Lifting LocationsÐTypical
0 - 10 LUBRICATION AND MAINTENANCEJ

²Do not allow passengers to ride in a vehicle being
towed.
²Always observe state and local laws regarding tow-
ing regulations.²Do not tow a vehicle in a manner that could jeop-
ardize the safety of the operator, pedestrians or other
motorists.
²Do not attach tow chains, T-hooks, J-hooks, or a
tow sling to a bumper, steering linkage, drive shafts
or a non-reinforced frame hole.
GROUND CLEARANCE AND RAMP ANGLE
GROUND CLEARANCE
CAUTION: If vehicle is towed with wheels removed,
install lug nuts to retain brake drums.
A towed vehicle should be raised until lifted wheels
are a minimum 100 mm (4 in) from the ground. Be
sure there is adequate ground clearance at the oppo-
site end of the vehicle, especially when towing over
rough terrain or steep rises in the road. If necessary,
remove the wheels from the lifted end of the vehicle
and lower the vehicle closer to the ground, to in-
crease the ground clearance at the opposite end of
the vehicle. Install lug nuts on wheel attaching studs
to retain brake drums.
FLAT-BED TOWING RAMP ANGLE
If a vehicle with flat-bed towing equipment is used,
the approach ramp angle should not exceed 15 de-
grees.
TWO-WHEEL-DRIVE VEHICLE TOWINGÐXJ
Chrysler Corporation recommends that a vehicle be
towed with the rear end lifted, whenever possible.
TOWING-REAR END LIFTED (SLING-TYPE)
CAUTION: Do not use steering column lock to se-
cure steering wheel during towing operation.
2WD XJ vehicles can be towed with the front
wheels on the surface for extended distances at
speeds not exceeding 48 km/h (30 mph).
(1) Attach J-hooks around the axle shaft tube out-
board of the shock absorber.
(2) Place the sling crossbar under and forward of
the bumper.
(3) Attach safety chains around the frame rails.
(4) Turn the ignition switch to the OFF position to
unlock the steering wheel.
(5) Secure steering wheel in the straight ahead po-
sition with a clamp device designed for towing.
(6) Verify that steering components are in good
condition.
(7) Shift the transmission to NEUTRAL.
Fig. 3 Correct Vehicle Lifting LocationsÐTypical
Fig. 4 Tow Vehicles With Approved Equipment.
JLUBRICATION AND MAINTENANCE 0 - 11

TOWING-FRONT END LIFTED (SLING-TYPE)
CAUTION: Many vehicles are equipped with air
dams, spoilers, and/or ground effect panels. To
avoid component damage, a wheel-lift towing vehi-
cle or a flat-bed hauling vehicle is recommended.
If a 2WD XJ vehicle cannot be towed with the rear
wheels lifted, it can be towed with the front wheels
lifted.
(1) Attach a J-hook to the disabled vehicle at the
left side of the axle.
(2) Position the sling crossbar close to the J-hook
and below the front bumper.
(3) Secure a chain to the right side of vehicle by
placing it over the axle shaft tube and attaching it to
a structural member (Fig. 5).
(4) Attach the safety chains to the vehicle.
(5) Turn the ignition switch to the OFF position to
unlock the steering wheel.
2WD-AUTOMATIC TRANSMISSION
Provided the transmission is operable, tow only in
NEUTRALat speeds not to exceed 30 mph (50
km/h) and distances less than 15 miles (25km/h).
If the vehicle is to be towed more than 15 miles,
the propeller shaft should be disconnected or place
tow dollies under rear wheels.
2WD-MANUAL TRANSMISSION
To reduce the possible damage of transmission com-
ponents, the propeller shaft must be removed or
place tow dollies under the rear wheels before tow-
ing. Refer to Propeller Shafts, Group 16 for proper
removal procedure.
FOUR-WHEEL-DRIVE VEHICLE TOWING
Chrysler Corporation recommends that a vehicle be
transported on a flat-bed device. A Wheel-lift or
Sling-type device can be used provided all the wheels
are lifted off the ground using tow dollies.
TOWING-REAR END LIFTED (SLING-TYPE)
4WD XJ VEHICLES
(1) Raise the front of the vehicle off the ground
and install tow dollies under front wheels.
(2) Attach J-hooks around the rear axle shaft tube
outboard of the shock absorber.
(3) Place the sling crossbar under and forward of
the bumper.
(4) Attach safety chains around the frame rails.
(5) Turn the ignition switch to the OFF position to
unlock the steering wheel.
(6) Secure steering wheel in the straight ahead po-
sition with a clamp device designed for towing.
(7) Shift the transfer case to NEUTRAL.
4WD YJ VEHICLES
Use Wheel-Lift equipment and Tow Dollies
when towing from the rear end of the vehicle.
TOWING-FRONT END LIFTED (SLING-TYPE)
4WD XJ VEHICLES
(1) Raise the rear of the vehicle off the ground and
install tow dollies under rear wheels.
(2) Attach a J-hook to the disabled vehicle at the
left side of front the axle.
(3) Position the sling crossbar close to the J-hook
and below the front bumper (Fig. 6).
(4) Secure a chain to the right side of vehicle by
placing it over the axle shaft tube and attaching it to
a structural member
(4) Attach the safety chains to the vehicle.
(5) Turn the ignition switch to the OFF position to
unlock the steering wheel.
(6) Shift transfer case to NEUTRAL.
Fig. 5 Sling-Type, Front-End Towing (XJ Rear View)
Fig. 6 Sling-Type, Front-End Towing (XJ Front View)
0 - 12 LUBRICATION AND MAINTENANCEJ

4WD YJ VEHICLES
(1) Raise the rear of the vehicle off the ground and
install tow dollies under rear wheels.
CAUTION: Use tow chains with T-hooks for con-
necting to the disabled vehicle's frame rails. Never
use J-hooks.
(2) Attach the T-hooks to the slots in the front end
of each frame rail (Fig. 7).
(3) Position each safety chain over the top of each
front spring and inboard of each front spring shackle.
(4) Double wrap each chain.
(5) Position the sling crossbar under the front
bumper.
(6) Turn the ignition switch to the OFF position to
unlock the steering wheel.
(7) Shift the transfer case to NEUTRAL.
TOWING WHEN KEYS ARE NOT AVAILABLE
When the vehicle is locked and keys are not avail-
able, use a flat bed hauler. A Wheel-lift or Sling-type
device can be used provided all the wheels are lifted
off the ground using tow dollies (Fig. 8).
EMERGENCY TOW HOOKS
WARNING: REMAIN AT A SAFE DISTANCE FROM A
VEHICLE THAT IS BEING TOWED VIA ITS TOW
HOOKS. THE TOW STRAPS/CHAINS COULD BREAK
AND CAUSE SERIOUS INJURY.
Some Jeep vehicles are equipped with front and
rear emergency tow hooks (Fig. 9). The tow hooks
should be used forEMERGENCYpurposes only.CAUTION: DO NOT use emergency tow hooks for
tow truck hook-up or highway towing.
FLAT TOWING (4 TIRES/WHEELS ON
SURFACE)
Tow a vehicle in this manner only when all four
wheels will freely rotate. Prepare the vehicle accord-
ing to the following procedures.
2WD VEHICLES
(1) Mark the drive shaft and the axle drive pinion
gear shaft yoke for installation alignment reference.
(2) Remove the drive shaft. Install a protective cov-
ering over the drive shaft U-joints to retain them as-
sembled and protected.
Fig. 7 Sling-Type, Front-End Towing (YJ Vehicles)
Fig. 8 Sling-Type, Front-End Towing With Rear
Wheels On A Tow Dolly
Fig. 9 Emergency Front Tow HooksÐXJ & YJ
Vehicles
JLUBRICATION AND MAINTENANCE 0 - 13

ENGINE MAINTENANCE
INDEX
page page
Accessory Drive Belt....................... 21
Air Cleaner Element....................... 18
Air-Conditioner Compressor.................. 21
Battery................................. 20
Crankcase Ventilation System................ 19
Emission Control System................... 20
Engine Break-In.......................... 15
Engine Cooling System..................... 18
Engine Oil.............................. 15Engine Oil Change and Filter Replacement...... 16
Engine Oil Filter.......................... 17
Engine Supports.......................... 21
Exhaust System.......................... 21
Fuel Filter............................... 19
Fuel Usage StatementÐGas Engines.......... 19
Ignition Cables, Distributor Cap and Rotor....... 20
Rubber and Plastic Component Inspection....... 20
Spark Plugs............................. 20
ENGINE BREAK-IN
CAUTION: Wide open throttle operation in low
gears, before engine break-in period is complete,
can damage engine.
After first starting a new engine, allow it to idle for
15 seconds before shifting into a drive gear. Also:
²Drive the vehicle at varying speeds less than 88
km/h (55 mph) for the first 480 km (300 miles).
²Avoid fast acceleration and sudden stops.
²Do not drive at full-throttle for extended periods of
time.
²Do not drive at constant speeds.
²Do not idle the engine excessively.
A special break-in engine oil is not required. The
original engine oil installed is a high quality, energy
conserving lubricant. Special break-in oils are not
recommended. These oils could interfere with the
normal piston ring seating process.
New engines tend to consume more fuel and oil un-
til after the break-in period has ended.
ENGINE OIL
WARNING: NEW OR USED ENGINE OIL CAN BE IR-
RITATING TO THE SKIN. AVOID PROLONGED OR
REPEATED SKIN CONTACT WITH ENGINE OIL.
CONTAMINANTS IN USED ENGINE OIL, CAUSED BY
INTERNAL COMBUSTION, CAN BE HAZARDOUS TO
YOUR HEALTH. THOROUGHLY WASH EXPOSED
SKIN WITH SOAP AND WATER.
DO NOT WASH SKIN WITH GASOLINE, DIESEL
FUEL, THINNER, OR SOLVENTS, HEALTH PROB-
LEMS CAN RESULT.
DO NOT POLLUTE, DISPOSE OF USED ENGINE
OIL PROPERLY. CONTACT YOUR DEALER OR GOV-
ERNMENT AGENCY FOR LOCATION OF COLLEC-
TION CENTER IN YOUR AREA.
ENGINE OIL SPECIFICATION
CAUTION: Do not use non-detergent or straight
mineral oil when adding or changing crankcase lu-
bricant. Engine failure can result.
API SERVICE GRADE CERTIFIED
Use an engine oil that is API Service Grade Certi-
fied or an oil that conforms to the API Service Grade
SH or SH/CD. MOPAR provides engine oils that con-
form to all of these service grades.
SAE VISCOSITY
An SAE viscosity grade is used to specify the vis-
cosity grade of engine oil. SAE 30 specifies a single
viscosity engine oil. Engine oils also have multiple
viscosities. These are specified with a dual SAE vis-
cosity grade which indicates the cold-to-hot tempera-
ture viscosity range. Select an engine oil that is best
suited to your particular temperature range and vari-
ation (Fig.1).
ENERGY CONSERVING OIL
An Energy Conserving type oil is recommeded for
gasoline engines. They are designated as either EN-
ERGY CONSERVING or ENERGY CONSERVING
II.
Fig. 1 Temperature/Engine Oil Viscosity
JLUBRICATION AND MAINTENANCE 0 - 15

CONTAINER IDENTIFICATION
Standard engine oil identification notations have
been adopted to aid in the proper selection of engine
oil. The identifying notations are located on the label
of engine oil plastic bottles and the top of engine oil
cans (Fig. 2).
ENGINE OIL ADDITIVES
In some instances, such as infrequent operation,
short trip driving, and during break-in after a major
overhaul, addition of special materials containing an-
ti-rust and anti-scuff additives are beneficial. A suit-
able product for this purpose is MOPAR Engine Oil
Supplement.
OIL LEVEL INDICATOR (DIPSTICK)
The engine oil level indicator (Dipstick) is located
at the right rear of both 2.5L engines and 4.0L en-
gines (Fig. 3).
CRANKCASE OIL LEVEL INSPECTION
CAUTION: Do not overfill crankcase with engine oil,
oil foaming and oil pressure loss can result.
Inspect engine oil level approximately every 800 ki-
lometers (500 miles). Unless the engine has exhibited
loss of oil pressure, run the engine for about five
minutes before checking oil level. Checking engine oil
level on a cold engine is not accurate.
To ensure proper lubrication of an engine, the en-
gine oil must be maintained at an acceptable level.
The acceptable levels are indicated between the ADD
and SAFE marks on the engine oil dipstick (Fig. 4
and 5).
(1) Position vehicle on level surface.
(2) With engine OFF, allow approximately ten min-
utes for oil to settle to bottom of crankcase, remove
engine oil dipstick.
(3) Wipe dipstick clean.
(4) Install dipstick and verify it is seated in the
tube.
(5) Remove dipstick, with handle held above the
tip, take oil level reading (Figs.4 and 5).
(6) Add oil only if level is below the ADD mark on
dipstick.
ENGINE OIL CHANGE AND FILTER REPLACEMENT
ENGINE OIL CHANGE
Change engine oil at mileage and time intervals
described in Maintenance Schedules.
TO CHANGE ENGINE OIL
Run engine until achieving normal operating tem-
perature.
(1) Position the vehicle on a level surface and turn
engine off.
(2) Hoist and support vehicle on safety stands. Re-
fer to Hoisting and Jacking Recommendations in this
group.
Fig. 2 API Certification Mark
Fig. 3 Engine Oil Dipstick LocationÐTypical
Fig. 4 Engine Oil DipstickÐ2.5L Engine
0 - 16 LUBRICATION AND MAINTENANCEJ

(3) Remove oil fill cap.
(4) Place a suitable drain pan under crankcase
drain.
(5) Remove drain plug from crankcase and allow
oil to drain into pan. Inspect drain plug threads for
stretching or other damage. Replace drain plug and
gasket if damaged.
(6) Install drain plug in crankcase.
(7) Lower vehicle and fill crankcase with specified
type and amount of engine oil described in this sec-
tion.
(8) Install oil fill cap.
(9) Start engine and inspect for leaks.
(10) Stop engine and inspect oil level.
ENGINE OIL FILTER
FILTER SPECIFICATION
CAUTION: Do not use oil filter with metric threads.
The proper oil filter has SAE type 3/4 X 16 threads.
An oil filter with metric threads can result in oil
leaks and engine failure.
All Jeep engines are equipped with a high quality
full-flow, throw-away type oil filter. Chrysler Corpo-
ration recommends a Mopar or equivalent oil filter be
used.
OIL FILTER REMOVAL
(1) Position a drain pan under the oil filter.
(2) Using a suitable oil filter wrench loosen filter.
(3) Rotate the oil filter counterclockwise to remove
it from the cylinder block oil filter boss (Fig. 6 and 7).
(4) When filter separates from adapter nipple, tip
gasket end upward to minimize oil spill. Remove fil-
ter from vehicle.
(5) With a wiping cloth, clean the gasket sealing
surface (Fig. 8) of oil and grime.
OIL FILTER INSTALLATION
(1) Lightly lubricate oil filter gasket with engine
oil or chassis grease.
(2) Thread filter onto adapter nipple. When gasket
makes contact with sealing surface, (Fig. 8) hand
tighten filter one full turn, do not over tighten.
(3) Add oil, verify crankcase oil level and start en-
gine. Inspect for oil leaks.
Fig. 5 Engine Oil Dipstick Ð 4.0L EngineFig. 6 Oil FilterÐ2.5L Engine
Fig. 7 Oil Filter Ð 4.0L Engine
Fig. 8 Oil Filter Sealing SurfaceÐTypical
JLUBRICATION AND MAINTENANCE 0 - 17