2004 JEEP GRAND CHEROKEE fuel pressure

CAUTION!
Overfilling or underfilling the crankcase will cause
aeration or loss of oil pressure. This could damage
your engine.
Change Engine Oil
Road conditions as well as your kind of driving affect the
interval at which your oil should be changed. Check the
following to determine if any apply to you:
²Day or night temperatures are below 32ÉF (0ÉC)
²Stop and go driving
²Extensive engine idling
²Driving in dusty conditions
²Short trips of less than 10 miles (16.2 km)
²More than 50% of your driving is at sustained high
speeds during hot weather, above 90ÉF (32ÉC)
²Trailer towing
²Taxi, Police, or delivery service (Commercial Service)
²Off road or desert operation
²If equipped for and operating with E-85 (ethanol) fuel
IfANYof these apply to you, then change your engine oil
every 3,000 miles (5 000 km) or 3 months, whichever
comes first, and follow the maintenance recommenda-
tions in ªMaintenance Schedule B.º
If none of these apply to you, then change your engine oil
every 6,000 miles (10 000 km) or 6 months, whichever
comes first.
NOTE:Under no circumstances should oil change in-
tervals exceed 6,000 miles (10 000 km) or 6 months
whichever comes first.
258 MAINTAINING YOUR VEHICLE

Coolant Temperature Gauge.............. 131
Engine Oil Pressure Gauge............... 130
Freeing Vehicle When Stuck............... 186
Hazard Warning Flasher................. 236
Jacking............................. 242
Jump Starting......................... 246
Tow Hooks.......................... 248
Emission Control System Maintenance......254,296
Engine
Air Cleaner.......................... 264
Block Heater......................... 178
Break-In Recommendations................ 51
Compartment......................251,252
Cooling............................. 269
Exhaust Gas Caution.................... 51
Fails to Start.......................... 177
Flooded, Starting...................... 177
Fuel Requirements..................221,291
Jump Starting......................... 246Malfunction Indicator................... 130
Oil ................................ 291
Oil Change Interval.................... 258
Oil Disposal.......................... 260
Oil Filter............................ 260
Oil Filter Disposal...................... 260
Oil Pressure Gauge..................... 130
Oil Selection.......................... 291
Overheating.......................... 237
Starting............................. 176
Temperature Gauge..................... 131
Engine Oil Viscosity Chart................. 259
Entry System, Illuminated.................. 15
Exhaust Gas Caution...................... 51
Exhaust System......................... 269
Extender, Seat Belt........................ 35
Exterior Finish Care...................... 282
332 INDEX

Gasoline.............................. 221
Gasoline, Reformulated................... 222
Gasoline/Oxygenate Blends................ 222
Gauges
Coolant Temperature.................... 131
Fuel................................ 133
Odometer........................... 132
Oil Pressure.......................... 130
Speedometer......................... 129
Tachometer.......................... 129
Voltmeter............................ 129
Gear Ranges........................... 181
General Information...................... 219
Glass Cleaning.......................... 284
Glove Compartment...................... 116
Hazard Warning Flasher................... 236
Head Restraints.......................... 64
Head Rests............................. 64Headlights............................. 77
High Beam........................... 129
On With Wipers........................ 77
Heated Mirrors.......................... 61
Heated Seats............................ 71
Heater, Engine Block..................... 178
Holder, Cup........................... 116
Homelink Transmitter.................... 106
Hood Release........................... 74
Hoses................................ 274
Identifying Your Engine................251,252
Ignition
Key ................................. 11
Illuminated Entry........................ 15
Infant Restraint.......................... 44
Inflation Pressure Tires.................... 212
Information Center, Vehicle................. 90
Inside Rearview Mirror.................... 59
334 INDEX