2018 Ram 3500 Chassis Cab engine coolant

•Use only high purity water such as distilled or deionized
water when mixing the water/engine coolant (anti-
freeze) solution. The use of lower quality water will
reduce the amount of corrosion protection in the engine
cooling system.
NOTE:
• It is the owner’s responsibility to maintain the proper
level of protection against freezing according to the
temperatures occurring in the area where the vehicle is
operated.
• Some vehicles require special tools to add coolant prop-
erly. Failure to fill these systems properly could lead to
severe internal engine damage. If any coolant is needed
to be added to the system, please contact a local autho-
rized dealer.
• Mixing engine coolant (antifreeze) types is not recom-
mended and can result in cooling system damage. If
HOAT and OAT coolant are mixed in an emergency,
have a authorized dealer drain, flush, and refill with
OAT coolant (conforming to MS.90032) as soon as pos-
sible.Cooling System Pressure Cap
The cap must be fully tightened to prevent loss of engine
coolant (antifreeze), and to ensure that engine coolant
(antifreeze) will return to the radiator from the coolant
expansion bottle/recovery tank if so equipped.
The cap should be inspected and cleaned if there is any
accumulation of foreign material on the sealing surfaces.
WARNING!
• Do not open hot engine cooling system. Never add
engine coolant (antifreeze) when the engine is over-
heated. Do not loosen or remove the cap to cool an
overheated engine. Heat causes pressure to build up
in the cooling system. To prevent scalding or injury,
do not remove the pressure cap while the system is
hot or under pressure.
• Do not use a pressure cap other than the one speci-
fied for your vehicle. Personal injury or engine
damage may result.
384 SERVICING AND MAINTENANCE

Disposal Of Used Coolant
Used ethylene glycol-based coolant (antifreeze) is a regu-
lated substance requiring proper disposal. Check with your
local authorities to determine the disposal rules for your
community. To prevent ingestion by animals or children,
do not store ethylene glycol-based coolant in open contain-
ers or allow it to remain in puddles on the ground. If
ingested by a child or pet, seek emergency assistance
immediately. Clean up any ground spills immediately.
Checking Coolant Level — 6.4L Engine
The level of the coolant in the pressurized coolant bottle
should be between the “MIN” and “MAX” range on the
bottle when the engine is cold.
The radiator normally remains completely full, so there is
no need to remove the cap unless checking for coolant
freeze point or replacing engine coolant (antifreeze). Ad-
vise your service attendant of this. As long as the engine
operating temperature is satisfactory, the coolant bottle
need only be checked once a month. When additional
engine coolant (antifreeze) is needed to maintain the
proper level, it should be added to the coolant bottle. Do
not overfill.
Points To Remember
NOTE:When the vehicle is stopped after a few miles/
kilometers of operation, you may observe vapor coming
from the front of the engine compartment. This is normally
a result of moisture from rain, snow, or high humidity
accumulating on the radiator and being vaporized when
the thermostat opens, allowing hot engine coolant (anti-
freeze) to enter the radiator.
If an examination of your engine compartment shows no
evidence of radiator or hose leaks, the vehicle may be
safely driven. The vapor will soon dissipate.
• Do not overfill the coolant expansion bottle.
• Check the coolant freeze point in the radiator and in the
coolant expansion bottle. If engine coolant (antifreeze)
needs to be added, the contents of the coolant expansion
bottle must also be protected against freezing.
• If frequent engine coolant (antifreeze) additions are
required, the cooling system should be pressure tested
for leaks.
8
SERVICING AND MAINTENANCE 385

•Maintain engine coolant (antifreeze) concentration at a
minimum of 50% OAT coolant (conforming to
MS.90032) and distilled water for proper corrosion pro-
tection of your engine which contains aluminum com-
ponents.
• Make sure that the coolant expansion bottle overflow
hoses are not kinked or obstructed.
• Keep the front of the radiator clean. If your vehicle is
equipped with air conditioning, keep the front of the
condenser clean.
• Do not change the thermostat for Summer or Winter
operation. If replacement is ever necessary, install ONLY
the correct type thermostat. Other designs may result in
unsatisfactory engine coolant (antifreeze) performance,
poor gas mileage, and increased emissions.
Brake System
In order to assure brake system performance, all brake
system components should be inspected periodically. Refer
to the “Maintenance Plan” in this section for the proper
maintenance intervals.
WARNING!
Riding the brakes can lead to brake failure and possi-
bly a collision. Driving with your foot resting or riding
on the brake pedal can result in abnormally high brake
temperatures, excessive lining wear, and possible
brake damage. You would not have your full braking
capacity in an emergency.
Fluid Level Check — Brake Master Cylinder
The fluid level of the master cylinder should be checked
when performing under the hood service or immediately if
the brake system warning lamp indicates system failure.
The brake master cylinder has a translucent plastic reser-
voir. On the outboard side of the reservoir, there is a
“MAX” mark and a “MIN” mark. The fluid level must be
kept within these two marks. Do not add fluid above the
MAX mark because leakage may occur at the cap.
With disc brakes the fluid level can be expected to fall as
the brake linings wear. However, an unexpected drop in
fluid level may be caused by a leak and a system check
should be conducted.
386 SERVICING AND MAINTENANCE

FLUID CAPACITIES
U.S.Metric
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 Certi-
fied) 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 Liters
432 TECHNICAL SPECIFICATIONS

FLUIDS AND LUBRICANTS
Engine
ComponentFluid, Lubricant, or Genuine Part
Engine Coolant We recommend you use Mopar Antifreeze/Coolant 10–
Year/150,000 Mile Formula OAT (Organic Additive Tech-
nology).
Engine Oil – 6.4L Engine For best performance and maximum protection under all
types of operating conditions, the manufacturer only rec-
ommends full synthetic engine oils that meet the Ameri-
can Petroleum Institute (API) categories of SN. The
manufacturer recommends the use of Pennzoil Ultra
0W-40 or equivalent Mopar engine oil meeting the re-
quirements 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%
Ethanol.
9
TECHNICAL SPECIFICATIONS 433

CAUTION!
•Mixing of engine coolant (antifreeze) other than
specified Organic Additive Technology (OAT) en-
gine coolant (antifreeze), may result in engine dam-
age and may decrease corrosion protection. Organic
Additive Technology (OAT) engine coolant is differ-
ent and should not be mixed with Hybrid Organic
Additive Technology (HOAT) engine coolant (anti-
freeze) or any “globally compatible” coolant (anti-
freeze). 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 authorized dealer as soon as pos-
sible.
• 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 (anti-
freeze) is not recommended.
434 TECHNICAL SPECIFICATIONS

Adding Engine Coolant (Antifreeze).............383
Adding Fuel ............................. .287
Additives, Fuel ........................ .288, 428
Adjust Down .............................. .45, 46
Forward ............................ .44, 46
Rearward ........................... .44, 46
Up ................................ .45, 46
Adjustable Pedals ...........................57
Air Bag Air Bag Operation ....................... .196
Air Bag Warning Light .....................193
Enhanced Accident Response .............203, 353
Event Data Recorder (EDR) .................353
If A Deployment Occurs ....................201
Knee Impact Bolsters ..................... .197
Maintaining Your Air Bag System .............203
Transporting Pets ....................... .230
Air Bag Light ...................... .147, 193, 232
Air Bag Maintenance ....................... .203
Air Cleaner, Engine (Engine Air Cleaner Filter) ......366
Air Conditioner Maintenance ..................369
Air Conditioning ............................80
Air Conditioning Filter ....................94, 370
Air Conditioning, Operating Tips ................93Air Conditioning Refrigerant
...............369, 370
Air Conditioning System ...................92, 369
Air Filter ............................... .366
Air Pressure, Tires ......................... .403
Alarm, Panic ...............................22
Alarm (Security Alarm) ....................33, 148
Alarm System (Security Alarm) .................33
Alterations/Modifications, Vehicle ................7
Antifreeze (Engine Coolant) ...................382
Capacities ............................. .432
Disposal .............................. .385
Anti-Lock Brake System (ABS) .................160
Anti-Lock Warning Light .....................153
Ashtray ................................ .123
Assist,

Hill Start .......................... .162
Audio Systems (Radio) ...................... .439
Auto Down Power Windows ...................96
Automatic Door Locks ........................39
Automatic Headlights ........................70
Automatic High Beams .......................69
Automatic Temperature Control (ATC) ............92
Automatic Transmission Adding Fluid .......................... .389
Fluid And Filter Changes ...................390
Fluid Level Check .....................387, 388
510 INDEX

Fluid Type......................... .387, 435
Shifting .............................. .247
Special Additives ........................ .388
Axle Fluid ........................ .390, 391, 435
Axle Lubrication ....................... .390, 391
Back-Up ................................ .284
Back-Up Camera .......................... .284
Battery .............................. .149, 363
Charging System Light ....................149
Keyless Key Fob Replacement ................22
Belts, Seat ............................... .232
Body Builders Guide ..........................7
Body Mechanism Lubrication ..................376
B-Pillar Location .......................... .398
Brake Assist System ........................ .162
Brake Control System, Electronic ................161
Brake Fluid .......................... .386, 435
Brake System ......................... .386, 424
Fluid Check ........................... .386
Master Cylinder ........................ .386
Parking .............................. .243
Warning Light .......................... .147
Brake/Transmission Interlock ..................246
Bulb Replacement ......................... .323Bulbs, Light
.......................... .234, 323
Cab Top Clearance Lights .....................328
Camera ................................ .284
Camera, Rear ............................ .284
Capacities, Antifreeze (Engine Coolant) ...........432
Capacities, Fluid .......................... .432
Caps, Filler Oil (Engine) ........................ .362, 366
Power Steering ......................... .267
Radiator (Coolant Pressure) .................384
Carbon Monoxide Warning ................231, 431
Cargo Light ...............................
73
Car Washes .............................. .418
Cellular Phone ........................... .483
Center High Mounted Stop Light ...............326
Center Seat Storage Compartment ...............109
Changing A Flat Tire ....................... .337
Chart, Tire Sizing .......................... .394
Check Engine Light (Malfunction Indicator Light). . . .157
Checking Your Vehicle For Safety ...............231
Checks, Safety ............................ .231
Child Restraint ........................... .204
Child Restraints Booster Seats ........................... .209
12
INDEX 511