2019 DODGE DURANGO engine overheat

•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.
(Continued)
WARNING! (Continued)
•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.
8
SERVICING AND MAINTENANCE 443

MMT In Gasoline
Methylcyclopentadienyl Manganese Tricarbonyl (MMT) is
a manganese-containing metallic additive that is blended
into some gasoline to increase octane. Gasoline blended
with MMT provides no performance advantage beyond
gasoline of the same octane number without MMT. Gaso-
line blended with MMT reduces spark plug life and
reduces emissions system performance in some vehicles.
The manufacturer recommends that gasoline without
MMT be used in your vehicle. The MMT content of
gasoline may not be indicated on the gasoline pump;
therefore, you should ask your gasoline retailer whether
the gasoline contains MMT. MMT is prohibited in Federal
and California reformulated gasoline.
Fuel System Cautions
CAUTION!
Follow these guidelines to maintain your vehicle’s
performance:
•The use of leaded gasoline is prohibited by Federal
law. Using leaded gasoline can impair engine perfor-
mance and damage the emissions control system.
• An out-of-tune engine or certain fuel or ignition
malfunctions can cause the catalytic converter to
overheat. If you notice a pungent burning odor or
some light smoke, your engine may be out of tune or
malfunctioning and may require immediate service.
Contact an authorized dealer for service assistance.
• The use of fuel additives, which are now being sold
as octane enhancers, is not recommended. Most of
these products contain high concentrations of metha-
nol. Fuel system damage or vehicle performance
problems resulting from the use of such fuels or
additives is not the responsibility of the manufac-
turer and may void or not be covered under the New
Vehicle Limited Warranty.
484 TECHNICAL SPECIFICATIONS

Oil ...............................426, 486
Oil Filler Cap ....................... .422, 427
Oil Filter .............................. .428
Oil Selection .....................426, 486, 487
Oil Synthetic ........................... .427
Overheating ........................... .404
Starting ........................... .263, 264
Engine Oil Viscosity .....................426, 427
Engine Oil Viscosity Chart .................426, 427
Enhanced Accident Response Feature .........225, 412
Ethanol ................................. .482
Exhaust Gas Cautions ................... .254, 485
Exhaust System ....................... .254, 438
Exterior Lights .......................74, 257, 378
Filters Air Cleaner ............................ .428
Air Conditioning .....................103, 429
Engine Oil ............................ .428
Engine Oil Disposal .......................427
Flashers ................................ .372
Hazard Warning ........................ .372
Turn Signals ..................169, 257, 381, 382
Flash-To-Pass ..............................76
Flooded Engine Starting ..................... .268Fluid Capacities
........................... .486
Fluid Leaks .............................. .257
Fluid Level Checks Brake ................................ .445
Fluids And Lubricants ................... .487, 489
Fog Lights .............................. .381
Fog Lights, Service ........................ .381
Fold-Flat Seats .............................41
Folding Rear Seats ..........................45
Forward Collision Warning ....................191
Four-Way Hazard Flasher .....................372
Freeing A Stuck Vehicle ..................... .408
Front Axle (Differential) ..................... .447
Fuel ................................... .481
Additives ............................. .482
Clean Air............................. .482
Economy

Mode ......................... .274
Ethanol .............................. .482
Gasoline .............................. .481
Materials Added ........................ .482
Methanol ............................. .482
Octane Rating .......................... .481
Requirements ....................... .481, 486
Specifications .......................... .487
Tank Capacity .......................... .486
584 INDEX

Methanol............................... .482
Mirrors ..................................70
Electric Remote ...........................72
Exterior Folding ..........................71
Heated .................................73
Outside ................................71
Rearview ........................... .70, 372
Vanity .................................73
Modifications/Alterations Vehicle .................................6
Monitor, Tire Pressure System ..................194
Mopar Parts ............................. .577
Multi-Function Control Lever ...................74
New Vehicle Break-In Period ..................269
Occupant Restraints ........................ .200
Octane Rating, Gasoline (Fuel) .................481
Oil Change Indicator ....................... .149
Reset ................................ .149
Oil, Engine .............................. .426
Capacity .............................. .486
Change Interval ........................ .426
Dipstick .............................. .424
Disposal .............................. .427Filter
................................ .428
Filter Disposal .......................... .427
Identification Logo .......................426
Materials Added To .......................427
Pressure Warning Light ................... .162
Recommendation .....................426, 486
Synthetic ............................. .427
Viscosity ....................... .426, 427, 486
Oil Filter, Change ......................... .428
Oil Filter, Selection ......................... .428
Oil Pressure Light ......................... .162
Onboard Diagnostic System ...................170
Opener, Garage Door (Homelink) ...............115
Operating Precautions .......................170
Operator Manual Owner’s Manual ....................... 5
,577
Outside Rearview Mirrors .....................71
Overheating, Engine ....................... .404
Paint Care ............................... .472
Parking Brake ............................ .270
ParkSense System, Rear .................. .314, 323
Passive Entry ..............................35
Pets ................................... .253
Pinch Protection .......................... .109
588 INDEX