cooling Ram 4500 Chassis Cab 2020 Owner's Guide

372SERVICING AND MAINTENANCE
Exhaust System
Inspect the entire exhaust system for leaks and
damaged parts. Devices such as hangers,
clamps, and U-bolts should be tight and in good
condition. Damaged components, burned or
blown out mufflers, burned or rusted out
exhaust pipes should be replaced according to
the procedures and specifications outlined in
the appropriate service manual.
Air Cleaner Assembly
Inspect air cleaner housing for proper assembly
and fit. Make certain that the air cleaner is prop -
erly positioned and that the cover is tight. Check
all hoses leading to the air cleaner for tightness.
The air filter element must also be clean and
serviced according to the instructions outlined
in the Scheduled Maintenance section of this
manual.Tampering With Noise Control System
Prohibited
Federal law prohibits the following acts or the
causing thereof: (1) the removal or rendering
inoperative by any person, other than for
purposes of maintenance, repair, or replace -
ment, of any device or element of design incor -
porated into any new vehicle for the purpose of
noise control prior to its sale or delivery to the
ultimate purchaser or while it is in use, or (2) the
use of the vehicle after such device or element
of design has been removed or rendered inop -
erative by any person.
Among those acts presumed to constitute
tampering are the acts listed below.
AIR CLEANER
Removal of the air cleaner.
Removal of the air cleaner filter element from
the air cleaner housing.
Removal of the air ducting.
EXHAUST SYSTEM
Removal or rendering inoperative exhaust
system components including the muffler or
tailpipe. ENGINE COOLING SYSTEM

Removal or rendering inoperative the fan
clutch.
Removal of the fan shroud.
Noise Emission Warranty
The manufacturer warrants that this vehicle as
manufactured by the manufacturer, was
designed, built and equipped to conform at the
time it left the manufacturer's control with all
applicable U.S. EPA Noise Control Regulations.
This warranty covers this vehicle as designed,
built and equipped by the manufacturer, and is
not limited to any particular part, component or
system of the vehicle manufactured by the
manufacturer. Defects in design, assembly or in
any part, component or system of the vehicle as
manufactured by the manufacturer, which, at
the time it left the manufacturer's control,
caused noise emissions to exceed Federal stan -
dards, are covered by this warranty for the life of
the vehicle.

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TECHNICAL SPECIFICATIONS405
FLUID CAPACITIES — GAS ENGINE
FLUID CAPACITIES — DIESEL ENGINE
USMetric
Fuel (Approximate)
Standard Rear Tank 52 Gallons197 Liters
Optional Midship Tank 22 Gallons83 Liters
Engine Oil With Filter
6.4L Engine (We recommend you use SAE 0W-40, Synthetic API Certified) 7 Quarts6.6 Liters
Cooling System
6.4L Engine (We recommend you use Mopar Antifreeze/Coolant 10 Year/150,000 Mile
Formula). 16.6 Quarts
15.7 Liters
US Metric
Fuel (Approximate)
Standard Rear Tank 52 Gallons197 Liters
Optional Midship Tank 22 Gallons83 Liters
Diesel Exhaust Fluid Tank
(Approximate) 9 Gallons
34 Liters
Engine Oil With Filter
6.7L Turbo Diesel Engine 12 Quarts11.4 Liters8

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406TECHNICAL SPECIFICATIONS
Cooling System
6.7L Turbo Diesel Engine 3500 with
AS69RC (Mopar Engine Coolant/
Antifreeze 10 Year/150,000 Mile
Formula) 22.5 Quarts
21.3 Liters
6.7L Turbo Diesel Engine Chassis
Cab 3500/4500 with AS69RC
(Mopar Engine Coolant/Antifreeze
10 Year/150,000 Mile Formula) 22.3 Quarts
21.1 Liters
6.7L Turbo Diesel Engine Chassis
Cab 5500 with AS69RC (Mopar
Engine Coolant/Antifreeze 10 Year/
150,000 Mile Formula) 22.8 Quarts
21.6 Liters
USMetric

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408TECHNICAL SPECIFICATIONS
(Continued)
(Continued)
CAUTION!
Mixing of engine coolant (antifreeze) other
than specified Organic Additive Technology
(OAT) engine coolant (antifreeze), may
result in engine damage and may decrease
corrosion protection. Organic Additive Tech -
nology (OAT) engine coolant is different and
should not be mixed with Hybrid Organic
Additive Technology (HOAT) engine coolant
(antifreeze) or any “globally compatible”
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 autho -
rized dealer as soon as possible.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.
CAUTION! (Continued)
This vehicle has not been designed for use
with propylene glycol-based engine coolant
(antifreeze). Use of propylene glycol-based
engine coolant (antifreeze) is not recom -
mended.
CAUTION! (Continued)

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505
B-Pillar Location
....................................379Brake Assist System...............................121Brake Control System.............................121Brake Fluid...................................367, 409Brake System............................... 367, 397Fluid Check.......................................367Master Cylinder.................................367Parking............................................204Warning Light....................................109Brake/Transmission Interlock...................206Bulb Replacement.................................300Bulbs, Light.................................. 182, 300
C
Cab Top Clearance Lights........................305Camera...............................................258Camera, AUX................................ 261, 267Camera, Rear............................... 258, 261Capacities, Antifreeze (Engine Coolant).......405Capacities, Fluid....................................405Caps, Filler Oil (Engine)............................... 343, 348Power Steering..................................229Radiator (Coolant Pressure)..................365Car Washes..........................................394Carbon Monoxide Warning............... 180, 401Cargo Light.............................................47Cellular Phone......................................483Center High Mounted Stop Light................304Center Seat Storage Compartment..............73
Changing A Flat Tire............................... 314Charge Air Cooler................................... 366Chart, Tire Sizing................................... 376Check Engine Light (Malfunction Indicator Light)119Checking Your Vehicle For Safety.............. 180Checks, Safety...................................... 180Child Restraint...................................... 160Child RestraintsBooster Seats................................... 164Child Seat Installation................. 172, 174How To Stow An unused ALR Seat Belt.... 171Infant And Child Restraints................... 162Locating The LATCH Anchorages............ 169Lower Anchors And Tethers For Children.. 165Older Children And Child Restraints........ 163Seating Positions............................... 165Clean Air Gasoline................................. 399CleaningWheels............................................ 389Climate Control....................................... 51Automatic.......................................... 55Manual.............................................. 52Cold Weather Operation.......................... 187Compact Spare Tire............................... 387Contract, Service................................... 501Cooling Pressure Cap (Radiator Cap).......... 365Cooling System..................................... 363Adding Coolant (Antifreeze).................. 364Coolant Level............................ 363, 366
Cooling Capacity................................ 405Disposal Of Used Coolant.................... 365Drain, Flush, And Refill........................ 364Inspection........................................ 366Points To Remember.......................... 366Pressure Cap.................................... 365Radiator Cap.................................... 365Selection Of Coolant(Antifreeze)................... 364, 407, 410Corrosion Protection.............................. 393Cruise Control (Speed Control)......... 230, 232Cruise Light......................................... 117Cupholders............................................ 77Customer Assistance............................. 500Cybersecurity....................................... 414
D
Daytime Running Lights............................ 45Dealer Service...................................... 347Defroster, Rear Window............................ 52Defroster, Windshield....................... 52, 181Delay (Intermittent) Wipers........................ 50Diagnostic System, Onboard.................... 118Diesel Exhaust Brake............................. 203Diesel Fuel.......................................... 402Diesel Fuel Requirements....................... 402Bulk Storage Of................................. 269Diesel Fuel System, Re-Priming................ 358Differential, Limited Slip......................... 228
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511
Snow Chains (Tire Chains)
.......................390Snow Plow...........................................286Snow Tires...........................................387Spare Tires...................................387, 388Spark Plugs..........................................407Speed Control Accel/Decel......................................231Cancel.............................................231Resume...........................................231Speed Control (Cruise Control)..........230, 232Starting............................... 183, 184, 187Automatic Transmission............... 183, 187Button...............................................17Cold Weather....................................187Engine Block Heater...........................190Engine Fails To Start...........................186Starting And Operating............................184Starting Procedures........................184, 187Starting Procedures (Diesel Engines)..........187Starting Procedures (Gas Engines).............183SteeringPower..............................................229Tilt Column.........................................38Wheel, Heated.....................................38Wheel, Tilt..........................................38Steering Wheel Audio Controls..................481Steering Wheel Mounted Sound
System Controls....................................481Storage.................................................72Storage Compartment, Center Seat..............73
Storage, Vehicle.............................. 63, 393Storing Your Vehicle............................... 393Sunglasses Storage................................. 81Sway Control, Trailer.............................. 127Synthetic Engine Oil............................... 349
T
Telescoping Steering Column..................... 38Temperature Control, Automatic (ATC).......... 62TiltDown................................................ 31Up.................................................... 31Tilt Steering Column................................. 38Tip Start...................................... 183, 188Tire And Loading Information Placard......... 379Tire Markings....................................... 375Tire Safety Information........................... 374Tires........................... 182, 382, 387, 392Aging (Life Of Tires)............................ 385Air Pressure...................................... 382Chains............................................. 390Changing......................................... 314Compact Spare................................. 387Dual............................... 317, 391, 398General Information................... 382, 387High Speed....................................... 383Inflation Pressure............................... 383Jacking............................................ 314Life Of Tires...................................... 385Load Capacity................................... 379
Pressure Monitoring System(TPMS)................................ 113, 132Quality Grading................................. 392Radial............................................. 384Replacement.................................... 385Rotation.......................................... 391Safety..................................... 374, 382Sizes.............................................. 376Snow Tires....................................... 387Spare Tires.............................. 387, 388Spinning.......................................... 384Trailer Towing................................... 280Tread Wear Indicators......................... 385Wheel Nut Torque.............................. 397To Open Hood........................................ 66Tongue Weight/Trailer Weight.................. 279Torque Converter Clutch......................... 212Towing........................................ 274, 326Disabled Vehicle................................ 326Guide.............................................. 279Recreational..................................... 288Weight............................................ 279Towing Behind A Motorhome................... 288Traction.............................................. 292Traction Control.................................... 124Traction Control Switch........................... 124Trailer Sway Control (TSC)....................... 127Trailer Towing....................................... 274Cooling System Tips........................... 285Hitches........................................... 278
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