Page 250 of 408

Section of this manual. More frequent rotation is permis-
sible if desired. The reasons for any rapid or unusual
wear should be corrected prior to rotation being per-
formed.
FUEL REQUIREMENTS
All engines are designed to meet all emis-
sions regulations and provide excellent
fuel economy and performance when us-
ing high quality unleaded “regular” gaso-
line having an octane rating of 87. The
routine use of premium gasoline is not
recommended. Under normal conditions
the use of premium fuel will not provide a benefit over
high quality regular gasolines and in some circumstances
may result in poorer performance. The 4.7 HO engine is designed to meet all
emissions regulations and provide satisfac-
tory fuel economy and performance when
using high quality unleaded gasoline hav-
ing an octane range of 87 to 91. The manu-
facturer recommends the use of 91 octane
for optimum performance.
Light spark knock at low engine speeds is not harmful to
your engine. However, continued heavy spark knock at
high speeds can cause damage and immediate service is
required.
Poor quality gasoline can cause problems such as hard
starting, stalling and hesitations. If you experience these
symptoms, try another brand of “regular” gasoline be-
fore considering service for the vehicle.
3.7L/4.7L Engines
4.7L HO En- gines
250 STARTING AND OPERATING
Page 252 of 408

MMT In Gasoline
MMT is a manganese-containing metallic additive that is
blended into some gasoline to increase octane. Gasolines
blended with MMT provide no performance advantage
beyond gasolines of the same octane number without
MMT. Gasolines blended with MMT reduce spark plug
life and reduce emission system performance. We recom-
mend that gasolines free of MMT be used in your vehicle.
The MMT content of gasoline may not be indicated on
the gasoline pump; therefore, you should ask your gaso-
line retailer whether or not his/her gasoline contains
MMT. It is even more important to look for gasolines without
MMT in Canada because MMT can be used at levels
higher than allowed in the United States. MMT is pro-
hibited in Federal and California reformulated gasolines.
Materials Added To Fuel
All gasolines sold in the United States are required to
contain effective detergent additives. Use of additional
detergents or other additives is not needed under normal
conditions and would result in unnecessary cost. There-
fore, you should not have to add anything to the fuel.
252 STARTING AND OPERATING
Page 255 of 408

Fuel System Cautions
CAUTION!
Follow these guidelines to maintain your vehicle’s
performance:
•The use of leaded gas is prohibited by Federal law.
Using leaded gasoline can impair engine performance,
damage the emission control system.
•An out-of-tune engine, or certain fuel or ignition
malfunctions, can cause the catalytic converter to
overheat. If you notice a pungent burning odor or
some light smoke, your engine may be out of tune or
malfunctioning and may require immediate service.
Contact your dealer for service assistance.
•When pulling a heavy load or driving a fully loaded
vehicle when the humidity is low and the temperature
is high, use a premium unleaded fuel to help prevent
spark knock. If spark knock persists, lighten the load,
or engine piston damage may result.
•The use of fuel additives which are now being sold as
octane enhancers is not recommended. Many of these
products contain high concentrations of methanol.
Fuel system damage or vehicle performance problems
resulting from the use of such fuels or additives is not
the responsibility of the manufacturer.
NOTE: Intentional tampering with emissions control
systems can result in civil penalties being assessed
against you.
STARTING AND OPERATING 255
5
Page 355 of 408
FLUIDS AND CAPACITIES
U.S. Metric
Fuel 3.7L/4.7L, 87 Octane 22 Gal. 83L
4.7L HO, 91 Octane, Recommended Not Required 22 Gal 83L
Engine Oil (with filter) 3.7L, SAE 5W-30, API Certified 5 Qt. 4.7L
4.7L, SAE 5W-30, API Certified 6 Qt. 5.7L
4.7L HO, SAE 5W-30, API Certified 6 Qt. 5.7L
Cooling System (includes 2.1 Qts./2L for coolant bottle 3.7L (Mopar Antifreeze/Coolant 5 Year/100,000 Mile Formula) 13.3 Qt. 12.5L
4.7L (Mopar Antifreeze/Coolant 5 Year/100,000 Mile Formula) 13.3 Qt. 12.5L
4.7L HO (Mopar Antifreeze/Coolant 5 Year/100,000 Mile Formula) 13.3 Qt. 12.5L
NOTE: All fluid capacities are approximate capacities.
MAINTAINING YOUR VEHICLE 355
7
Page 356 of 408
FLUIDS, LUBRICANTS AND GENUINE PARTS
Engine
Component Fluids, Lubricants and Genuine Parts
Engine Coolant Mopar Antifreeze/Coolant 5 Year/100,000 Mile Formula HOAT (Hybrid Or-
ganic Additive Technology) or equivalent.
Engine Oil Use SAE 5W-30, API Certified, meeting material standard MS-6395.
Engine Oil Filter Mopar Engine Oil Filter, P/N 5281090 or equivalent.
Spark Plugs Refer to the Vehicle Emission Control Information label in the engine com- partment.
Fuel Selection 3.7L/4.7L 87 Octane, (R+M)/2 Method
Fuel Selection 4.7L HO 91 Octane, (R+M)/2 Method (Recommend, Not Required.)
356 MAINTAINING YOUR VEHICLE
Page 395 of 408

Fluid Capacities......................... 355
Fluid Level Checks Automatic Transmission ................. 328
Brake ............................... 326
Cooling System ....................... 320
Engine Oil ........................... 307
Power Steering ........................ 317
Transfer Case ......................... 331
Fluids, Lubricants and Genuine Parts .......... 356
Fog Lights .......................... 1 16,354
Four Wheel Drive ....................... 211
Operation ............................ 211
Four-Way Hazard Flasher .................. 282
Freeing A Stuck Vehicle ................... 229
Front Axle (Differential) ................... 332
Fuel ................................. 250
Adding ............................. 253
Filter ............................... 313
Gauge .............................. 152 Octane Rating
...................... 250,356
Requirements ...................... 250,355
Tank Capacity ........................ 355
Fueling ............................... 253
Fuses ................................ 337
Garage Door Opener (HomeLink ) ........... 132
Gas Cap (Fuel Filler Cap) ...............254,304
Gas Gauge (Fuel Gauge) ................... 152
Gasoline (Fuel) ......................... 250
Gasoline, Reformulated ................... 251
Gauges Coolant Temperature .................... 152
Fuel ................................ 152
Odometer ......................... 155,156
Speedometer ......................... 154
Tachometer .......................... 155
Gear Ranges ........................... 204
Glass Cleaning .......................... 336
INDEX 395
10
Page 399 of 408

Lubricant Selection.................. 328,357
Map/Reading Lights ..................... 125
Mirrors ................................ 79
Automatic Dimming ..................... 79
Electric Powered ....................... 81
Heated .............................. 82
Outside .............................. 80
Rearview ............................. 79
Trailer Towing ........................ 272
Modifications/Alterations, Vehicle ............. 6
Mopar Parts ......................... 306,385
Multi-Function Control Lever ............... 117
New Vehicle Break-In Period ................ 70
Occupant Classification System (OCS) .......... 44
Occupant Restraints ....................... 30
Octane Rating, Gasoline (Fuel) .............. 250
Oil, Engine ......................... 307,356 Capacity
............................ 355
Change Interval ....................... 309
Dipstick ............................. 307
Disposal ............................. 311
Filter ............................ 31 1,356
Filter Disposal ........................ 311
Identification Logo ..................... 310
Materials Added to ..................... 311
Recommendation ................... 310,355
Synthetic ............................ 311
Viscosity .......................... 310,355
Onboard Diagnostic System ..............304,305
Opener, Garage Door (HomeLink ) ........... 132
Outside Rearview Mirrors .................. 80
Overdrive .......................... 155,206
Overdrive OFF Switch .................... 206
Overhead Console .................... 125,126
Overhead Travel Information Center .......... 126
Overheating, Engine ................... 154,323
INDEX 399
10