cooling RAM CHASSIS CAB 2012 User Guide

Refer to the “Maintenance Schedule” for the proper
maintenance intervals.
Selection Of Coolant
Use only the manufacturer’s recommended engine cool-
ant (antifreeze). Refer to “Fluids, Lubricants, and Genu-
ine Parts” in “Maintaining Your Vehicle” for further
information.
CAUTION!• Mixing of engine coolant (antifreeze) other than
specified HOAT engine coolant (antifreeze), may
result in engine damage and may decrease corro-
sion protection. If a non-HOAT engine coolant
(antifreeze) is introduced into the cooling system
in an emergency, it should be replaced with the
specified engine coolant (antifreeze) as soon as
possible.
(Continued) CAUTION! (Continued)• Do not use water alone or alcohol-based engine
coolant (antifreeze) products. Do not use addi-
tional rust inhibitors or antirust products, as they
may not be compatible with the engine coolant
(antifreeze) and may plug the radiator.
• This vehicle has not been designed for use with
Propylene Glycol based engine coolant (anti-
freeze). Use of Propylene Glycol based engine
coolant (antifreeze) is not recommended.
Adding Coolant
Your vehicle has been built with an improved engine
coolant (antifreeze) that allows extended maintenance
intervals. This engine coolant (antifreeze) can be used up
to five years or 104,000 miles (169 000 km) before replace-
ment. To prevent reducing this extended maintenance
period, it is important that you use the same engine
coolant (antifreeze) throughout the life of your vehicle.418 MAINTAINING YOUR VEHICLE

Please review these recommendations for using Hybrid
Organic Additive Technology (HOAT) engine coolant
(antifreeze). When adding engine coolant (antifreeze):
• The manufacturer recommends using MOPAR 
Antifreeze/Coolant 5 Year/100,000 Mile Formula
HOAT (Hybrid Organic Additive Technology) or
equivalent.
• Mix a minimum solution of 50% HOAT engine coolant
and distilled water. Use higher concentrations (not to
exceed 70%) if temperatures below  34°F (  37°C) are
anticipated.
• Use only high purity water such as distilled or deion-
ized water when mixing the water/engine coolant
(antifreeze) solution. The use of lower quality water
will reduce the amount of corrosion protection in the
engine cooling system. Please note that it is the owner’s responsibility to main-
tain the proper level of protection against freezing ac-
cording to the temperatures occurring in the area where
the vehicle is operated.
NOTE: Mixing engine coolant (antifreeze) types will
decrease the life of the engine coolant (antifreeze) and
will require more frequent coolant changes.
Cooling System Pressure Cap
The cap must be fully tightened to prevent loss of engine
coolant (antifreeze), and to ensure that the engine coolant
(antifreeze) will return to the radiator from the coolant
recovery bottle.
The cap should be inspected and cleaned if there is any
accumulation of foreign material on the sealing surfaces.
7 MAINTAINING YOUR VEHICLE 419

WARNING!• The warning words “DO NOT OPEN HOT” on
the cooling system pressure cap are a safety pre-
caution. Never add engine coolant (antifreeze)
when the engine is overheated. 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
specified for your vehicle. Personal injury or en-
gine damage may result. Disposal Of Used Coolant
Used ethylene glycol-based engine coolant (antifreeze) is
a regulated substance requiring proper disposal. Check
with your local authorities to determine the disposal
rules for your community. To prevent ingestion by ani-
mals or children do not store ethylene glycol-based
engine coolant (antifreeze) in open containers 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 – 5.7L Engine
With the engine OFF and cold, the level of the engine
coolant should be between the MIN and MAX range on
the dipstick.
To check the coolant level:
1. Open the coolant reservoir.420 MAINTAINING YOUR VEHICLE

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 (a
few 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 vapor-
ized when the thermostat opens, allowing hot coolant 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 recovery bottle.
• Check engine coolant (antifreeze) freeze point in the
radiator and in the coolant recovery bottle. If engine
coolant (antifreeze) needs to be added, contents of
coolant recovery bottle must also be protected against
freezing.
• If frequent engine coolant (antifreeze) additions are
required, or if the level in the coolant recovery bottle
does not drop when the engine cools, the cooling
system should be pressure tested for leaks.
• Maintain engine coolant (antifreeze) concentration at
50% HOAT engine coolant (antifreeze) (minimum)
and distilled water for proper corrosion protection of
your engine, which contains aluminum components.
• Make sure that the radiator and coolant recovery
bottle overflow hoses are not kinked or obstructed.422 MAINTAINING YOUR VEHICLE

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
5.7L Engine (SAE 5W-20, API Certified) 7 Quarts 6.6 Liters
Cooling System
5.7L Engine (MOPAR  Antifreeze/Coolant 5
Year/100,000 Mile Formula) or equivalent. 18.7 Quarts 17.7 Liters
7 MAINTAINING YOUR VEHICLE 449

Carbon Monoxide Warning ............... 78,339
Cargo Light ............................ 152
Cellular Phone ........................ 93,255
Center High Mounted Stop Light ............ 445
Center Lap Belts ......................... 48
Center Seat Storage Compartment ............ 176
Certification Label ....................... 342
Chart, Tire Sizing ........................ 310
Check Engine Light
(Malfunction Indicator Light) ............. 199,403
Checking Your Vehicle For Safety ............. 77
Checks, Safety ........................... 77
Child Restraint ........................ 64,65
Child Restraint Tether Anchors ............. 68,73
Child Seat .............................. 70
Cigar Lighter ........................... 169
Cleaning
Wheels ............................ 432
Climate Control ......................... 256 Clock ............................. 223,232
Cold Weather Operation ................... 274
Compact Disc (CD) Maintenance ............. 255
Compact Spare Tire ...................... 325
Compass .............................. 214
Compass Calibration ..................... 215
Compass Variance ....................... 215
Computer, Trip/Travel .................... 212
Connector
UCI .............................. 246
Universal Consumer Interface (UCI) ....... 246
Console, Overhead ....................... 163
Contract, Service ........................ 475
Coolant Pressure Cap (Radiator Cap) .......... 419
Cooling System ......................... 417
Adding Coolant (Antifreeze) ............. 418
Coolant Capacity ..................... 449
Coolant Level .................... 417,420
Disposal of Used Coolant ............... 420484 INDEX

Tow Hooks, Emergency ................... 393
Towing ............................ 344,395
24-Hour Towing Assistance ............. 107
Disabled Vehicle ..................... 395
Guide ............................. 348
Recreational ........................ 365
Weight ............................ 348
Towing Assistance ....................... 107
Traction .............................. 299
Trailer Towing .......................... 344
Cooling System Tips .................. 361
Hitches ............................ 347
Minimum Requirements ................ 351
Mirrors ............................ 92
Trailer and Tongue Weight .............. 349
Wiring ............................ 359
Trailer Towing Guide ..................... 348
Trailer Weight .......................... 348 Transfer Case ........................... 427
Electronically Shifted .................. 292
Fluid ............................. 451
Transmission
Automatic ....................... 278,427
Fluid ............................. 451
Maintenance ........................ 427
Shifting ........................... 276
Transmitter Battery Service
(Remote Keyless Entry) .................... 25
Transmitter Programming
(Remote Keyless Entry) .................... 21
Transmitter, Remote Keyless Entry (RKE) ........ 21
Tread Wear Indicators .................... 327
Trip Odometer .......................... 192
Turn Signals ...................... 153,189,443
10 INDEX 497