Page 52 of 300

WARNING!
An incorrectly anchored tether strap could lead to
seat failure and injury to the child. In a collision, the
seat could come loose and allow the child to crash
into the inside of the vehicle or other passengers, or
even be thrown from the vehicle. Use only the
anchor positions directly behind the child restraint
to secure a child restraint top tether strap. See your
dealer for help if necessary.
Children Too Large for Booster Seats
Children who are large enough to wear the shoulder belt
comfortably, and whose legs are long enough to bend
over the front of the seat when their back is against the
seat back should use the lap/shoulder belt in a rear seat.
²Make sure that the child is upright in the seat.
²The lap portion should be low on the hips and as snug
as possible.
²Check belt fit periodically. A child's squirming or
slouching can move the belt out of position.If the shoulder belt contacts the face or neck, move the
child closer to the center of the vehicle. If this doesn't
help, move the child to the center rear seating position
and use the lap belt. Never allow a child to put the
shoulder belt under an arm or behind their back.
ENGINE BREAK-IN RECOMMENDATIONS
A long break-in period is not required for the engine in
your new vehicle. Drive moderately during the first 300
miles (500 km). After the initial 60 miles (100 km), speeds
up to 50 or 55 mph (80 or 90 km/h) are desirable. While
cruising, brief full-throttle acceleration, within the limits
of local traffic laws, contributes to a good break-in.
Avoid wide open throttle acceleration in low gear.
The engine oil installed in the engine at the factory is a
high-quality, energy-conserving type lubricant. Oil
changes should be consistent with anticipated climate
conditions under which vehicle operations will occur.
The recommended viscosity and quality grades are
shown in Section 7.
NON-DETERGENT OR STRAIGHT MINERAL OILS
MUST NEVER BE USED.
52 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE
Page 228 of 300

Dusty Conditions
Driving through dust-laden air increases the problems of
keeping abrasive materials out of the engine. Under these
conditions, special attention should be given to the
engine air cleaner and the crankcase inlet air cleaner. The
crankcase ventilation system should also be checked
periodically. Make sure that these units are always clean.
This will tend to reduce to a minimum the amount of
abrasive material that may enter the engine.
Engine Oil Selection
For best performance and maximum protection under all
types of operating conditions, the manufacture only
recommends engine oils that are API certified and meet
the requirements of DaimlerChrysler Material Standard
MS-6395. Use Mopar or an equivalent oil meeting the
specification MS-6395.
American Petroleum Institute (API) Oil
Identification Symbol
There is a symbol to aid you in selecting the proper
engine oil.This symbol means that the oil has
been certified by the American
Petroleum Institute (API). The
manufacture only recommends
API Certified engine oils that
meet the requirements of
DaimlerChrysler Material Stan-
dard MS-6395. Use Mopar or an
equivalent oil meeting the specifi-
cation MS-6395.
Engine Oil Viscosity Chart
The proper SAE viscosity grade of engine oil should be
selected based on the following recommendation and be
within the operating temperature shown in the recom-
mended SAE viscosity chart.
²SAE 5W-30 is the oil recommended in trucks equipped
with a 3.7L/4.7L engine, for optimum fuel economy.
²Synthetic engine oils may be used provided that the oil
quality requirements described above are met and the
recommended maintenance intervals for oil and filter
changes are followed.
228 MAINTAINING YOUR VEHICLE
Page 229 of 300

²Lubricants which do not have both the engine oil
certification mark or current service symbol and the
correct viscosity grade number should not be used.
Synthetic Engine Oils
There are a number of engine oils being promoted as
either synthetic or semi-synthetic. If you chose to use
such a product, useonlythose oils that meet the Ameri-
can Petroleum Institute (API) and SAE viscosity stan-
dard. Follow the service schedule that describes your
driving type.
Materials Added to Engine Oil
The manufacture strongly recommends against the addi-
tion of any additives (other than leak detection dyes) to
the engine oil. Engine oil is an engineered product and
it's performance may be impaired by supplemental ad-
ditives.
Disposing of Used Engine Oil And Oil Filters
Care should be taken in disposing of used engine oil and
oil filters from your vehicle. Used oil and oil filters,
indiscriminately discarded, can present a problem to the
environment. Contact your dealer, service station, or
governmental agency for advice on how and where used
oil and oil filters can be safely discarded in your area.
Engine Oil Filter
The engine oil filter should be replaced at every engine
oil change.
Engine Oil Filter Selection
The manufacturer's engines have a full-flow type oil
filter. Use a filter of this type for replacement. The quality
of replacement filters varies considerably. Only high
3.7L/4.7L Engines
MAINTAINING YOUR VEHICLE 229
7
Page 296 of 300

Viscosity.........................228,258
Onboard Diagnostic System............223,224
Opener, Garage Door..................... 81
Outside Rearview Mirrors................. 59
Overdrive............................ 148
Overhead Console.....................76,77
Overhead Travel Information Center......... 77
Overheating, Engine..................104,239
Owner's Manual....................... 284
Panic Alarm........................... 19
Parking Brake......................... 163
Parking On Hill........................ 163
Passenger Airbag On/Off Switch............ 34
Passing Light........................... 70
Pickup Box........................... 194
Placard, Tire and Loading Information....... 172
Positive Crankcase Valve................. 242
Power
Brakes............................. 243
Distribution Center.................... 252
Door Locks.......................... 14
Mirrors............................. 60Outlet.............................. 86
Steering.........................166,234
Windows............................ 22
Power Steering Fluid.................... 260
Pregnant Women and Seat Belts............. 30
Pressure Gauge, Oil..................... 100
Programmable Electronic Features.........82,85
Programming Transmitters............19,82,85
Quad Cab............................. 65
Radial Ply Tires........................ 178
Radiator Cap.......................... 240
Radio.......................106,114,119,124
Radio Operation.................. 114,119,132
Rear Axle............................. 248
Rear Window Defroster.................. 140
Rearview Mirrors........................ 58
Reclining Front Seats..................... 62
Recommended Fluids, Lubricants and Genuine
Parts............................... 259
Recreational Towing..................... 202
Shifting into Transfer Case Neutral (N)..... 202
296 INDEX