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blended with MMT provides no performance advantage
beyond gasoline of the same octane number without
MMT. Gasoline blended with MMT reduces spark plug
life and reduces emissions system performance in some
vehicles. The manufacturer recommends that gasoline
without MMT be used in your vehicle. The MMT content
of gasoline may not be indicated on the gasoline pump,
therefore, you should ask your gasoline retailer whether
the gasoline contains MMT. MMT is prohibited in Federal
and California reformulated gasoline.
Materials Added To Fuel
All gasoline sold in the United States is required to
contain effective detergent additives. Use of additional
detergents or other additives is not needed under normal
conditions and they would result in additional cost.
Therefore, you should not have to add anything to the
fuel.
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 perfor-
mance and damage the emissions 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 ser-
vice. Contact your authorized dealer for service
assistance.
(Continued)
524 STARTING AND OPERATING
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WARNING!
Do not connect the cable to the negative post (-) of the
discharged battery. The resulting electrical spark
could cause the battery to explode and could result in
personal injury.
5. Start the engine in the vehicle that has the booster battery, let the engine idle a few minutes, and then
start the engine in the vehicle with the discharged
battery.
Once the engine is started, remove the jumper cables in
the reverse sequence:
6. Disconnect the negative (-)jumper cable from the
engine ground of the vehicle with the discharged
battery.
7. Disconnect the negative end (-)of the jumper cable
from the negative (-)post of the booster battery. 8. Disconnect the opposite end of the positive
(+)jumper
cable from the positive (+)post of the booster battery.
9. Disconnect the positive (+)end of the jumper cable
from the positive (+)post of the discharged vehicle.
If frequent jump-starting is required to start your vehicle
you should have the battery and charging system in-
spected at your authorized dealer.
CAUTION!
Accessories plugged into the vehicle power outlets
draw power from the vehicle’s battery, even when not
in use (i.e., cellular phones, etc.). Eventually, if
plugged in long enough without engine operation,
the vehicle’s battery will discharge sufficiently to
degrade battery life and/or prevent the engine from
starting.6
WHAT TO DO IN EMERGENCIES 615
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Under normal operating conditions, the catalytic converter
will not require maintenance. However, it is important to
keep the engine properly tuned to assure proper catalyst
operation and prevent possible catalyst damage.
NOTE:Intentional tampering with emissions control
systems can result in civil penalties being assessed
against you.
In unusual situations involving grossly malfunctioning
engine operation, a scorching odor may suggest severe
and abnormal catalyst overheating. If this occurs, stop
the vehicle, turn off the engine and allow it to cool.
Service, including a tune-up to manufacturer’s specifica-
tions, should be obtained immediately.
To minimize the possibility of catalytic converter dam-
age:
• Do not shut off the engine or interrupt the ignition,
when the transmission is in gear and the vehicle is in
motion. •
Do not try to start the engine by pushing or towing the
vehicle.
• Do not idle the engine with any spark plug wires
disconnected or removed, such as when diagnostic
testing, or for prolonged periods during very rough
idle or malfunctioning operating conditions.
Cooling System
WARNING!
You or others can be badly burned by hot engine
coolant (antifreeze) or steam from your radiator. If
you see or hear steam coming from under the hood,
do not open the hood until the radiator has had time
to cool. Never try to open a cooling system pressure
cap when the radiator is hot.
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MAINTAINING YOUR VEHICLE 647
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FLUIDS, LUBRICANTS AND GENUINE PARTS
Engine
ComponentFluid, Lubricant, or Genuine Part
Engine Coolant We recommend you use MOPAR® Antifreeze/Coolant
10 Year/150,000 Mile Formula OAT (Organic Additive
Technology).
Engine Oil We recommend you use API Certified SAE 5W-20
Engine Oil, meeting the requirements of Chrysler Ma-
terial Standard MS-6395.
Engine Oil – 5.7L Engine For 2500/3500 trucks operating
under a gross combined weight rating greaterthan
14,000 lbs/(6,350 kg.) We recommend you use API Certified SAE 5W-30
Engine Oil, meeting the requirements of Chrysler Ma-
terial Standard MS-6395.
Engine Oil Filter We recommend you use MOPAR® brand Engine Oil
Filters.
Spark Plugs – 3.6L Engine We recommend you use MOPAR® Spark Plugs (Gap
0.043 in [1.1 mm])
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MAINTAINING YOUR VEHICLE 691
Page 694 of 734
ComponentFluid, Lubricant, or Genuine Part
Spark Plugs – 4.7L Engine We recommend you use MOPAR® Spark Plugs. Up-
per Bank — (Gap 0.040 in [1 mm])
We recommend you use MOPAR® Spark Plugs.
Lower Bank — (Gap 0.051 in [1.30 mm])
Spark Plugs – 5.7L Engine We recommend you use MOPAR® Spark Plugs (Gap
0.043 in [1.1 mm])
Fuel Selection – 3.6L and 4.7L Engines 87 Octane
Fuel Selection – 5.7L Engine 87 Octane Acceptable - 89 Octane Recommended
Chassis
ComponentFluid, Lubricant, or Genuine Part
Automatic Transmission — Eight-Speed Automatic We recommend you use MOPAR® ZF 8&9 Speed ATF™ Automatic Transmission Fluid.
Automatic Transmission — Six-Speed Automatic with
Gasoline Engine (For Diesel Engine see Diesel Supple-
ment) We recommend you use MOPAR® ATF+4® Automatic
Transmission Fluid.
692 MAINTAINING YOUR VEHICLE
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Mileage or time passed
(whichever comes first)
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
110,000
120,000
130,000
140,000
150,000
Or Years: 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
32,000
48,000
64,000
80,000
96,000
112,000
128,000
144,000
160,000
176,000
192,000
208,000
224,000
240,000
Inspect the brake linings, parking
brake function. XXX X X X X
Inspect transfer case fluid. X X X
Additional Maintenance
Replace engine air filter. XX X X X
Replace spark plugs
(3.6L engine).** X
Replace the top row (intake side)
of spark plugs (4.7L Engine).** XX X X X
Replace the side row (exhaust
side) of spark plugs
(4.7L Engine).** X
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Mileage or time passed
(whichever comes first)
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
110,000
120,000
130,000
140,000
150,000
Or Years: 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
32,000
48,000
64,000
80,000
96,000
112,000
128,000
144,000
160,000
176,000
192,000
208,000
224,000
240,000
Replace spark plugs
(5.7L engine).** XX X X X
Replace the ignition cables
(4.7L Engine). X
Flush and replace the engine
coolant at 10 years or 150,000
miles (240,000 km) whichever
comes first. XX
Change automatic transmission
fluid and filter(s), if using your
vehicle for police, taxi, fleet, or
frequent trailer towing. X
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Mileage or time passed
(whichever comes first)
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
110,000
120,000
130,000
140,000
150,000
Or Years: 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
32,000
48,000
64,000
80,000
96,000
112,000
128,000
144,000
160,000
176,000
192,000
208,000
224,000
240,000
Change automatic transmission
fluid and filter. X
Inspect the transfer case fluid,
change for any of the following:
police, taxi, fleet, or frequent
trailer towing. X
Change the transfer case fluid. X
Inspect and replace PCV valve if
necessary. X
** The spark plug change interval is mileage based only,
yearly intervals do not apply.
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