2020 DODGE DURANGO coolant temperature

SERVICING AND MAINTENANCE323
(Continued)
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 (antifreeze) 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 properly. 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 recommended 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
possible.
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 equipped).
The cap should be inspected and cleaned if
there is any accumulation of foreign material on
the sealing surfaces.
Disposal Of Used Coolant
Used ethylene glycol-based 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 animals or
children, do not store ethylene glycol-based
coolant 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.
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.
WARNING!
Do not open hot engine cooling system.
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 engine damage may result.
WARNING! (Continued)
7

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324SERVICING AND MAINTENANCE
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.
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.
Coolant Level
The coolant expansion bottle provides a quick
visual method for determining that the coolant
level is adequate. With the engine off and cold,
the level of the coolant (antifreeze) in the bottle
should be between the “MAX” and “MIN” lines
marked on the bottle.
As long as the engine operating temperature is
satisfactory, the coolant bottle need only be
checked once a month.
When additional coolant (antifreeze) is needed
to maintain the proper level, it should be added
to the coolant bottle. Do not overfill. See an authorized dealer for service.
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 compart
-
ment. This is normally a result of moisture from
rain, snow, or high humidity accumulating on
the radiator and being vaporized when the ther -
mostat 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) addi-
tions are required, the cooling system should
be pressure tested for leaks.
Maintain engine coolant (antifreeze) concen -
tration at a minimum of 50% OAT coolant
(conforming to MS.90032) and distilled
water for proper corrosion protection of your
engine which contains aluminum compo -
nents.
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 ther -
mostat. Other designs may result in unsatis -
factory engine coolant (antifreeze)
performance, poor gas mileage, and
increased emissions.

20_WD_OM_EN_USC_t.book Page 324

TECHNICAL SPECIFICATIONS359
FLUIDS AND LUBRICANTS — SRT
ENGINE
Component Fluid, Lubricant or Genuine Part

Engine Coolant
We recommend you use 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.
Engine Oil For best performance and maximum protection under all types of
operating conditions, the manufacturer only recommends full synthetic
engine oils that meet the American Petroleum Institute (API) categories of
SN.
The manufacturer recommends the use of Pennzoil Ultra Platinum
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 We recommend you use Mopar Engine Oil Filters.
Spark Plugs We recommend you use Mopar Spark Plugs.
Fuel Selection Premium Unleaded 91 Octane Only or Higher (R+M)/2 Method, 0-15%
Ethanol (Do not use E-85).
8

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448
INDEX
A
About Your Brakes......................................... 350Adaptive Cruise Control (ACC)
(Cruise Control).............................................. 208Adding Engine Coolant (Antifreeze)............... 322Adding Fuel.................................................... 238Additives, Fuel............................................... 352Adjust
Down.................................................... 38, 39Forward................................................ 38, 39Rearward.............................................. 38, 39Up......................................................... 38, 39Air BagAir Bag Operation...................................... 156Air Bag Warning Light................................ 153Driver Knee Air Bag................................... 157Enhanced Accident Response......... 161, 293Event Data Recorder (EDR)....................... 293If Deployment Occurs................................ 160Knee Impact Bolsters................................ 156Maintaining Your Air Bag System.............. 161Maintenance............................................. 161Redundant Air Bag Warning Light.............154Side Air Bags............................................. 157Transporting Pets...................................... 180Air Bag Light............................... 110, 153, 181
Air Cleaner, Engine (Engine Air Cleaner
Filter)............................................................ 311Air Conditioner Maintenance........................ 313Air Conditioner Refrigerant........................... 313Air Conditioner System................................. 313Air Conditioning................................................ 68Rear............................................................. 66Air Conditioning Filter.................... 70, 311, 314Air Conditioning System................................... 69Air Conditioning, Operating Tips....................... 69Air Filter........................................................ 311Air PressureTires......................................................... 336AlarmArm The System................................... 23, 24Disarm The System..................................... 24Rearm The System...................................... 24Security Alarm.......................................... 113Alarm SystemSecurity Alarm............................................. 23All Wheel Drive (AWD)................................... 199Alterations/ModificationsVehicle......................................................... 11Android Auto................................................. 442Antifreeze (Engine Coolant)........ 322, 355, 356Disposal................................................... 323
Anti-Lock Brake System (ABS)....................... 122Anti-Lock Warning Light................................ 116Apple CarPlay................................................ 442Arming SystemSecurity Alarm.............................................23Assist, Hill Start............................................. 128Audio Settings............................................... 402Audio Systems (Radio).................................. 361Auto Down Power Windows..............................71Automatic Headlights.......................................52Automatic High Beams.....................................51Automatic Temperature Control (ATC)..............69Automatic Transmission....................... 184, 193Adding Fluid..................................... 326, 360Fluid And Filter Change............................. 326Fluid Change............................................. 326Fluid Level Check...................................... 326Fluid Type............................... 326, 358, 360Special Additives...................................... 326Automatic Transmission Limp Home Mode... 197Aux Mode...................................................... 405Auxiliary Driving Systems.............................. 131Auxiliary Electrical Outlet (Power Outlet)..........87Auxiliary Power Outlet......................................87Axle Fluid....................................................... 358Axle Lubrication............................................ 360

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