2018 DODGE DURANGO cooling

•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 an authorized
dealer.
Adding Coolant
Your vehicle has been built with an improved engine
coolant (OAT coolant conforming to MS.90032) that allows
extended maintenance intervals. This engine coolant (anti-
freeze) can be used up to ten years or 150,000 miles
(240,000 km) before replacement. To prevent reducing this
extended maintenance period, it is important that you use
the same engine coolant (OAT coolant conforming to
MS.90032) throughout the life of your vehicle.
Please review these recommendations for using Organic
Additive Technology (OAT) engine coolant (antifreeze)
that meets the requirements of FCA Material Standard
MS.90032. When adding engine coolant (antifreeze):
•We recommend using Mopar Antifreeze/Coolant 10
Year/150,000 Mile (240,000 km) Formula OAT (Organic
Additive Technology) that meets the requirements of
FCA Material Standard MS.90032. •
Mix a minimum solution of 50% OAT engine coolant
that meets the requirements of FCA Material Standard
MS.90032 and distilled water. Use higher concentrations
(not to exceed 70%) if temperatures below 34°F (37°C)
are anticipated. Please contact an authorized dealer for
assistance.
• 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
434 SERVICING AND MAINTENANCE

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.
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.
Coolant Level
The coolant bottle provides a quick visual method for
determining that the coolant level is adequate. With the
engine OFF and cold, the level of the engine coolant
(antifreeze) in the bottle should be between the ranges
indicated on the bottle.
The radiator normally remains completely full, so there is
no need to remove the radiator/coolant pressure cap
unless checking for engine coolant (antifreeze) freeze point
or replacing coolant. Advise your service attendant of this.
As long as the engine operating temperature is satisfactory,
the coolant bottle need only be checked once a month.
8
SERVICING AND MAINTENANCE 435

When additional engine coolant (antifreeze) is needed to
maintain the proper level, only OAT coolant that meets the
requirements of FCA Material Standard MS.90032 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. •
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.
436 SERVICING AND MAINTENANCE

U.S.Metric
Cooling System *
3.6L Engine (Mopar Antifreeze/
Engine Coolant 10 Year/150,000 Mile
Formula or equivalent) – Without
Trailer Tow Package 10.4 Quarts
9.9 Liters
3.6L Engine (Mopar Antifreeze/
Engine Coolant 10 Year/150,000 Mile
Formula or equivalent) – With Trailer
Tow Package 11 Quarts
10.4 Liters
5.7 Liter Engine (Mopar Antifreeze/
Engine Coolant 10 Year/150,000 Mile
Formula or equivalent) – Without
Trailer Tow Package 15.4 Quarts
14.6 Liters
5.7 Liter Engine (Mopar Antifreeze/
Engine Coolant 10 Year/150,000 Mile
Formula or equivalent) – With Trailer
Tow Package 16 Quarts
15.2 Liters
* Includes heater and coolant recovery bottle filled to MAX level.
478 TECHNICAL SPECIFICATIONS

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,
(Continued)
CAUTION! (Continued)
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.
480 TECHNICAL SPECIFICATIONS

Light.................................111
Luggage Carrier ........................ .133
Cargo Light ...............................111
Cargo Tie-Downs ...........................112
Car Washes ...............................465
Cellular Phone ............................547
Center High Mounted Stop Light ...............376
Chains, Tire ............................. .461
Changing A Flat Tire ........................441
Chart, Tire Sizing .......................... .442
Check Engine Light (Malfunction Indicator Light). . . .168
Checking Your Vehicle For Safety ...............252
Checks, Safety ............................ .252
Child Restraint ............................226
Child Restraints Booster Seats ............................230
Child Seat Installation .....................246
How To Stow An unused ALR Seat Belt ........242
Infant And Child Restraints .................228
Locating The LATCH Anchorages .............236
Lower Anchors And Tethers For Children .......232
Older Children And Child Restraints ...........229
Seating Positions ........................ .231
Child Safety Locks ..........................39
Clean Air Gasoline ........................ .474Cleaning
Wheels ............................... .460
Climate Control ............................85
Automatic ..............................86
Cold Weather Operation ..................... .267
Compact Disc (CD) Maintenance ................566
Compact Spare Tire ........................ .458
Contract, Service .......................... .570
Cooling Pressure Cap (Radiator Cap) ............435
Cooling System ............................432
Adding Coolant (Antifreeze) .................434
Coolant Level .......................... .435
Cooling Capacity ........................ .477
Disposal Of

Used Coolant ..................435
Drain, Flush, And Refill ....................433
Inspection ..........................432, 435
Points To Remember ..................... .436
Pressure Cap ............................435
Radiator Cap .......................... .435
Selection Of Coolant (Antifreeze) .......433, 477, 479
Corrosion Protection ........................464
Cruise Control (Speed Control) ..............289, 293
Cruise Light .......................... .165, 166
Cupholders .......................... .125, 126
Customer Assistance ........................568
576 INDEX

Cybersecurity............................ .486
Daytime Running Lights ......................73
Dealer Service ............................ .417
Defroster, Windshield ........................254
Diagnostic System, Onboard ...................167
Disable Vehicle Towing ..................... .401
Disposal Antifreeze (Engine Coolant) .................435
Disturb ................................. .562
Door Ajar ............................ .157, 159
Door Ajar Light ........................157, 159
Door Locks ............................ .31, 39
Child-Protection Door Lock — Rear Doors .......39
Door Opener, Garage ........................114
Doors ....................................31
Drag And Drop Menu .......................485
Driver ’s Seat Back Tilt .....................40, 41
Driving ................................. .361
DVD Player (Video Entertainment System) .........530
Economy (Fuel) Mode .......................272
Electrical Outlet, Auxiliary (Power Outlet) .........128
Electric Brake Control System ..................173
Anti-Lock Brake System ....................172 Electronic Roll Mitigation
...............176, 180
Electric Remote Mirrors .......................70
Electronically Shifted Transfer Case ..............281
Electronic Speed Control (Cruise Control) .........290
Electronic Stability Control (ESC) ...............177
Electronic Throttle Control Warning Light .........158
Emergency, In Case Of Freeing Vehicle When Stuck .................400
Hazard Warning Flasher ...................366
Jacking ............................383, 441
Jump Starting .......................... .394
Emission Control System Maintenance ............168
Engine ................................. .414
Air Cleaner ............................ .420
Block Heater ............................267
Br

eak-In Recommendations .................268
Compartment ........................414, 415
Compartment Identification ..............414, 415
Cooling ...............................432
Exhaust Gas Caution ...................253, 476
Fails To Start ............................266
Flooded, Starting ........................ .266
Fuel Requirements ....................473, 477
Jump Starting .......................... .394
Oil ...............................418, 477
12
INDEX 577

Synthetic Engine Oil........................419
System, Remote Starting ......................25
Telescoping Steering Column ................65, 66
Temperature Control, Automatic (ATC) ............98
Tie Down Hooks, Cargo ......................112
Tilt Steering Column ..................... .65, 66
Tire And Loading Information Placard ............446
Tire Markings ............................ .441
Tires......................... .255, 450, 457, 463
Aging (Life Of Tires) ..................... .454
Air Pressure ............................450
Chains ............................... .461
Changing .......................383, 393, 441
Compact Spare ..........................458
Flat Changing .......................... .393
General Information ...................450, 457
High Speed ............................ .452
Inflation Pressure ........................451
Jacking ............................... .441
Life Of Tires ............................454
Load Capacity .......................446, 447
Pressure Monitoring System (TPMS) ........161, 192
Quality Grading ........................ .463
Radial ............................... .452Replacement
........................ .393, 455
Rotation ...............................462
Safety ............................ .441, 450
Sizes .................................442
Snow Tires ............................ .457
Spare Tires ..................... .384, 457, 459
Spinning ...............................453
Trailer Towing .......................... .351
Tread Wear Indicators .....................453
Wheel Mounting ........................ .393
Wheel Nut Torque ........................471
Tire Safety Information .......................441
T ongue

Weight/Trailer Weight .................349
To Open Hood ............................108
Towing ............................. .343, 401
Disabled Vehicle ........................ .401
Guide .................................347
Recreational ............................355
Weight ............................... .347
Towing Behind A Motorhome ..................355
Traction Control .......................... .176
Trailer Sway Control (TSC) ....................180
Trailer Towing ............................ .343
Cooling System Tips ..................... .354
Hitches ............................... .346
586 INDEX