Page 625 of 675
CAUTION!Do not contaminate the bulb glass by touching it
with your fingers or by allowing it to contact other
oily surfaces. Shortened bulb life will result.
• Outside Bulbs: Cargo Lamps
• Inside Bulb: Center High-Mounted Stop Lamp
5. Reverse the procedure for installation of bulbs and
housing.CHMSL Bulb And Socket
7MAINTAINING YOUR VEHICLE 623
Page 626 of 675
Cab Top Clearance Lamps — If Equipped
1. Remove the two screws from the top of the lamp. 2. Rotate the bulb socket ¼ turn and pull it from the lamp
assembly.
Removing Rear Screw From Clearance Lamp Removing Bulb Socket From Clearance Lamp624 MAINTAINING YOUR VEHICLE
Page 627 of 675
3. Pull the bulb straight from it’s socket and replace.
Removing The Bulb From The Bulb Socket
7MAINTAINING YOUR VEHICLE 625
Page 628 of 675
FLUID CAPACITIES
U.S. Metric
Fuel (Approximate)
Standard Rear Tank 52 Gallons 197 Liters
Optional Midship Tank 22 Gallons 83 Liters
Engine Oil With Filter
6.4L Engine (We recommend you use SAE 0W-40, Synthetic API
Certified) 7 Quarts 6.6 Liters
Cooling System
6.4L Engine (We recommend you use MOPAR Antifreeze/Coolant
10 Year/150,000 Mile Formula). 16.6 Quarts 15.7 Liters626 MAINTAINING YOUR VEHICLE
Page 629 of 675
FLUIDS, LUBRICANTS, AND GENUINE PARTS
Engine
Component Fluid, 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 – 6.4L Engine For best performance and maximum protection under all
types of operating conditions, the manufacturer only recom-
mends full synthetic engine oils that meet the American Petro-
leum Institute (API) categories of SN. The manufacturer rec-
ommends the use of Pennzoil Ultra 0W-40 or equivalent
MOPAR engine oil meeting the requirements of FCA Material
Standard MS-12633 for use in all operating temperatures.
Engine Oil Filter – 6.4L Engine We recommend you use MOPAR Engine Oil Filters.
Spark Plugs – 6.4L Engine We recommend you use MOPAR Spark Plugs.
Fuel Selection – 6.4L Engine 89 Octane Recommended - 87 Octane Acceptable, 0-15% Etha-
nol. 7MAINTAINING YOUR VEHICLE 627
Page 630 of 675

CAUTION!• Mixing of engine coolant (antifreeze) other than
specified Organic Additive Technology (OAT) en-
gine coolant (antifreeze), may result in engine
damage and may decrease corrosion protection.
Organic Additive Technology (OAT) engine cool-
ant is different and should not be mixed with
Hybrid Organic Additive Technology (HOAT) en-
gine coolant (antifreeze) or any “globally compat-
ible” coolant (antifreeze). If a non-OAT engine
coolant (antifreeze) is introduced into the cooling
system in an emergency, the cooling system will
need to be drained, flushed, and refilled with fresh
OAT coolant (conforming to MS.90032), by an au-
thorized dealer as soon as possible. (Continued) CAUTION! (Continued)• Do not use water alone or alcohol-based engine
coolant (antifreeze) products. Do not use additional
rust inhibitors or antirust products, as they may not
be compatible with the radiator engine coolant and
may plug the radiator.
• This vehicle has not been designed for use with
propylene glycol-based engine coolant (antifreeze).
Use of propylene glycol-based engine coolant (an-
tifreeze) is not recommended.628 MAINTAINING YOUR VEHICLE
Page 631 of 675

Chassis
Component Fluid, Lubricant, or Genuine Part
Automatic Transmission (6.4L Engine with 66RFE Trans-
mission) (For Diesel Engine See Diesel Supplement) Use only ATF+4 Automatic Transmission Fluid. Failure
to use ATF+4 fluid may affect the function or perfor-
mance of your transmission. We recommend MOPAR
ATF+4 fluid.
Automatic Transmission (6.4L Engine with AS66RC
Transmission) Use only MOPAR ASRC Automatic Transmission Fluid
or equivalent. Failure to use the proper fluid may affect
the function or performance of your transmission.
Transfer Case We recommend you use MOPAR BW44-44 Transfer
Case Fluid.
Front and Rear Axle Fluid (4500/5500) We recommend you use GL-5 SAE 75W-90 Synthetic
(MS-9763).
Brake Master Cylinder We recommend you use MOPAR DOT 3 and SAE J1703.
If DOT 3 brake fluid is not available, then DOT 4 is
acceptable.
Power Steering Reservoir We recommend you use MOPAR Power Steering Fluid
+4, MOPAR ATF+4 Automatic Transmission Fluid. 7MAINTAINING YOUR VEHICLE 629
Page 632 of 675