2008 JEEP GRAND CHEROKEE fuel

WARNING!
You can be badly injured working on or around a
motor vehicle. Do only that service work for which
you have the knowledge and the proper equipment.
If you have any doubt about your ability to perform
a service job, take your vehicle to a competent
mechanic.
MAINTENANCE PROCEDURES
The pages that follow contain therequiredmaintenance
services determined by the engineers who designed your
vehicle.
Besides the maintenance items for which there are fixed
maintenance intervals, there are other items that should
operate satisfactorily without periodic maintenance.
However, if a malfunction of these items does occur, itcould adversely affect the engine or vehicle performance.
These items should be inspected if a malfunction is
observed or suspected.
Engine Oil
Checking Oil Level
To assure proper engine lubrication, the engine oil must
be maintained at the correct level. Check the oil level at
regular intervals, such as every fuel stop.
The best time to check the engine oil level is about 5
minutes after a fully warmed engine is shut off or before
starting the engine after it has sat overnight.
Checking the oil while the vehicle is on level ground will
improve the accuracy of the oil level readings. Maintain
the oil level in the ªSAFEº range. Adding one quart of oil
when the reading is at the bottom of the ªSAFEº range
will result in an oil level at the top of the ªSAFEº range
on these engines.
MAINTAINING YOUR VEHICLE 311
7

Fuel Filter
A plugged fuel filter can cause stalling, limit the speed at
which a vehicle can be driven or cause hard starting.
Should an excessive amount of dirt accumulate in the
fuel tank, filter replacement may be necessary. See your
local dealer for service.
Catalytic Converter
The catalytic converter requires the use of unleaded fuel
only. Leaded gasoline will destroy the effectiveness of the
catalyst as an emission control device.
Under normal operating conditions, the catalytic con-
verter will not require maintenance. However, it is im-
portant to keep the engine properly tuned to assure
proper catalyst operation and prevent possible catalyst
damage.
CAUTION!
Damage to the catalytic converter can result if your
vehicle is not kept in proper operating condition. In
the event of engine malfunction, particularly involv-
ing engine misfire or other apparent loss of perfor-
mance, have your vehicle serviced promptly. Contin-
ued operation of your vehicle with a severe
malfunction could cause the converter to overheat,
resulting in possible damage to the converter and the
vehicle.
NOTE:Intentional tampering with emissions control
systems can result in civil penalties being assessed
against you.
MAINTAINING YOUR VEHICLE 317
7

WARNING!
²Overfilling the brake fluid reservoir can result in
spilling brake fluid on hot engine parts and the
brake fluid catching fire.
²Use of a brake fluid that has a lower initial boiling
point than the recommended MOPAR DOT 3
product or a brake fluid that is unidentified as to
FMVSS specification may result in sudden brake
failure during hard prolonged braking. You could
have an accident.
Use only brake fluid that has been in a tightly closed
container to avoid contamination from foreign matter or
moisture.
CAUTION!
Do not allow a petroleum base fluid to contaminate
the brake fluid, Seal damage may result.
Fuel System Hoses
Electronic Fuel Injection high pressure fuel systems are
designed with hoses and quick connect fittings which
have unique material characteristics to provide adequate
sealing and resist attack by deteriorated gasoline.
You are urged to use only the manufacturer's specified
hoses with quick connect fittings, or their equivalent in
material and specification, in any fuel system servicing. It
is mandatory to replace any damaged hoses or quick
connect fittings that have been removed during service.
Care should be taken in installing quick connect fittings
to insure they are properly installed and fully connected.
See your authorized dealer for service.
332 MAINTAINING YOUR VEHICLE

Cav-
ityCartridge
FuseMini Fuse Description
11 40 Amp
GreenHVAC Blower
12 30 Amp
PinkRear Wiper, Ign R/O
13 40 Amp
GreenRear Window De-
froster (EBL)/Heated
Mirror
14 30 Amp
PinkRear HVAC (If
Equipped)
15 Ð Spare
16 50 Amp
RedASD
17 30 Amp
PinkABS Pump
18 40 Amp
GreenAccessory Delay, SeatsCav-
ityCartridge
FuseMini Fuse Description
19 40 Amp
GreenJB Power
20 Ð Spare
21 20 Amp
YellowFuel Pump
22 20 Amp
YellowTCM, A/C Clutch
23 25 Amp
NaturalPower Inverter
24 20 Amp
YellowRear Heated Seats
25 20 Amp
YellowFinal Drive Control
Module (FDCM)
26 15 Amp
BlueBrake Lamps
342 MAINTAINING YOUR VEHICLE

FLUID CAPACITIES
U.S. Metric
Fuel (Approximate)21 Gallons 79 Liters
Engine Oil with Filter
6.1 Liter Engine (SAE 0W-40, API Certified) 7 Qts 6.6 Liters
Cooling System *
6.1 Liter Engine (MopartEngine Coolant/Antifreeze 5 Year/100,000 Mile Formula) 14.8 Qts 14 Liters
* Includes heater and coolant recovery bottle filled to MAX level.
352 MAINTAINING YOUR VEHICLE

FLUIDS, LUBRICANTS, AND GENUINE PARTS
Engine
Component Fluid, Lubricant, or Genuine Part
Engine Coolant MopartAntifreeze/Coolant 5 Year/100,000 Mile Formula HOAT (Hybrid Or-
ganic Additive Technology)
Engine Oil (6.1L Engine) For best performance and maximum protection under all types of operating
conditions, the manufacturer only recommends full synthetic engine oils that
meet the American Petroleum Institute (API) categories of SM or SM/CF, and
meet the requirements of DaimlerChrysler Material Standard MS-10725. The
manufacturer recommends the use of a full synthetic engine oil, such as Mo-
bil 1 SAE 0W-40 or equivalent. For additional information, refer to the ªEn-
gine Oil Selectionº and ªEngine Oil Viscosity (SAE Grade)º in the ªMainte-
nance Proceduresº section of this manual.
Oil Filter (6.1L Engine) MopartOil Filter (P/N 05281090) or equivalent.
Spark Plugs PLZTR5AÐ13 (Gap 0.050º)
Fuel Selection (6.1L Engine) Premium Unleaded 91 Octane Only or higher.
MAINTAINING YOUR VEHICLE 353
7

NOTE:Most vehicles are operated under the conditions
listed for Schedule ªB.º
NOTE:IfANYof these apply to you, change your
engine oil every 3,000 miles (5 000 km) or 3 months,
whichever comes first, and follow the maintenance rec-
ommendations in ªMaintenance Schedule B.º
NOTE:IfANYof these apply to you then flush and
replace your engine coolant every 102,000 miles (170 000
km) or 60 months, whichever comes first, and follow
ªSchedule Bº of the ªMaintenance Schedulesº section of
this manual.
Second is ScheduleªAº. It is for vehicles that are not
operated under any of the conditions listed under Sched-
ule ªB.º
Use the schedule that best describes your driving condi-
tions. Where time and mileage are listed, follow the
interval that occurs first.CAUTION!
Failure to perform the required maintenance items
may result in damage to the vehicle.
At Each Stop for Fuel
²Check the engine oil level about 5 minutes after a fully
warmed engine is shut off. Checking the oil level while
the vehicle is on level ground will improve the accu-
racy of the oil level reading. Add oil only when the
level is at or below the ADD or MIN mark.
²Check the windshield washer solvent, add as required.
MAINTENANCE SCHEDULES 357
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ABS (Anti-Lock Brake System)............175,254
Adding Engine Coolant (Antifreeze).......... 326
Adding Fuel........................... 282
Adding Washer Fluid..................... 168
Additives, Fuel......................... 280
Adjustable Pedals....................... 130
Air Conditioner Maintenance............... 319
Air Conditioning, Operating Tips............ 236
Air Conditioning Refrigerant............... 320
Air Pressure, Tires....................... 269
Airbag................................ 45
Airbag Deployment....................... 51
Airbag Light.......................53,67,175
Airbag Maintenance....................... 53
Alarm, Panic............................ 22
Alarm (Security Alarm).................18,176
Alarm System (Security Alarm)............... 18
Alignment and Balance................... 274
Alterations/Modifications, Vehicle............. 8Antenna, Satellite Radio................... 222
Antifreeze (Engine Coolant)..............325,352
Disposal............................ 327
Anti-Lock Brake System (ABS)............134,254
Anti-Lock Warning Light.................. 175
Anti-Theft System.....................18,176
Appearance Care........................ 333
Audio Systems (Radio).................... 212
Auto Down Power Windows................ 29
Automatic Dimming Mirror................. 74
Automatic Door Locks..................... 27
Automatic Headlights.................... 120
Automatic Temperature Control (ATC)......... 229
Automatic Transmission................247,333
Fluid Level Check...................... 333
Autostick............................. 250
Auxiliary Electrical Outlet (Power Outlet)...... 158
Auxiliary Power Outlet................... 158
386 INDEX