2021 DODGE DURANGO octane

318TECHNICAL SPECIFICATIONS
Inspect the wheel mounting surface prior to
mounting the tire and remove any corrosion or
loose particles.

Wheel Mounting Surface

Tighten the lug nuts/bolts in a star pattern until
each nut/bolt has been tightened twice. Ensure
that the socket is fully engaged on the lug nut/bolt
(do not insert it half way).
NOTE:If in doubt about the correct tightness, have them
checked with a torque wrench by an authorized
dealer or service station.
After 25 miles (40 km), check the lug nut/bolt
torque to be sure that all the lug nuts/bolts are
properly tightened.
Torque Patterns

FUEL REQUIREMENTS
While operating on gasoline with the required
octane number, hearing a light knocking sound
from the engine is not a cause for concern.
However, if the engine is heard making a heavy
knocking sound, see a dealer immediately. Use of
gasoline with a lower than recommended octane
number can cause engine failure and may void the
New Vehicle Limited Warranty.Poor quality gasoline can cause problems such as
hard starting, stalling, and hesitations. If you
experience these symptoms, try another brand of
gasoline before considering service for the vehicle.
3.6L ENGINE
Do not use E-85 flex fuel or ethanol blends greater
than 15% in this engine.
This engine is designed to meet all
emissions regulations and provide
optimum fuel economy and performance
when using high quality unleaded regular
gasoline having a posted octane number of 87 as
specified by the (R+M)/2 method. The use of
higher octane premium gasoline is not required, as
it will not provide any benefit over regular gasoline
in these engines.
5.7L ENGINE
Do not use E-85 flex fuel or ethanol blends greater
than 15% in this engine.
This engine is designed to meet all
emissions regulations and provide
satisfactory fuel economy and
performance when using high-quality
unleaded gasoline having an octane range of 87 to
89 as specified by the (R+M)/2 method. The use of
89 octane plus gasoline is recommended for
optimum performance and fuel economy.
WARNING!
To avoid the risk of forcing the vehicle off the
jack, do not tighten the lug nuts/bolts fully until
the vehicle has been lowered. Failure to follow
this warning may result in personal injury.

21_WD_OM_EN_USC_t.book Page 318

TECHNICAL SPECIFICATIONS319
REFORMULATED GASOLINE
Many areas of the country require the use of
cleaner burning gasoline referred to as
“reformulated gasoline”. Reformulated gasoline
contains oxygenates and are specifically blended
to reduce vehicle emissions and improve air
quality.
The use of reformulated gasoline is recommended.
Properly blended reformulated gasoline will
provide improved performance and durability of
engine and fuel system components.
MATERIALS ADDED TO FUEL
Besides using unleaded gasoline with the proper
octane rating, gasolines that contain detergents,
corrosion and stability additives are
recommended. Using gasolines that have these
additives will help improve fuel economy, reduce
emissions, and maintain vehicle performance.
Designated TOP TIER Detergent Gasoline
contains a higher level of detergents to
further aide in minimizing engine and
fuel system deposits. When available,
the usage of TOP TIER Detergent Gasoline is
recommended. Visit
www.toptiergas.com for a list
of TOP TIER Detergent Gasoline Retailers. Indiscriminate use of fuel system cleaning agents
should be avoided. Many of these materials
intended for gum and varnish removal may contain
active solvents or similar ingredients. These can
harm fuel system gasket and diaphragm materials.
GASOLINE/OXYGENATE BLENDS
Some fuel suppliers blend unleaded gasoline with
oxygenates such as ethanol.
Problems that result from using gasoline
containing more than 15% ethanol (E-15) or
gasoline containing methanol are not the
responsibility of the manufacturer and may void
the New Vehicle Limited Warranty.
DO NOT USE E-85 IN NON-FLEX FUEL
V
EHICLES
Non-Flex Fuel Vehicles (FFV) are compatible with
gasoline containing up to 15% ethanol (E-15). Use
of gasoline with higher ethanol content may void
the New Vehicle Limited Warranty.
If a Non-FFV vehicle is inadvertently fueled with
E-85 fuel, the engine will have some or all of these
symptoms:
Operate in a lean mode.
OBD II Malfunction Indicator Light on.
Poor engine performance.
Poor cold start and cold drivability.
Increased risk for fuel system component
corrosion.
CNG AND LP FUEL SYSTEM
M
ODIFICATIONS
Modifications that allow the engine to run on
Compressed Natural Gas (CNG) or Liquid Propane
(LP) may result in damage to the engine,
emissions, and fuel system components. Problems
that result from running CNG or LP are not the
responsibility of the manufacturer and may void
the New Vehicle Limited Warranty.
CAUTION!
DO NOT use E-85, gasoline containing methanol,
or gasoline containing more than 15% ethanol
(E-15). Use of these blends may result in starting
and drivability problems, damage critical fuel
system components, cause emissions to exceed
the applicable standard, and/or cause the
Malfunction Indicator Light to illuminate. Please
observe pump labels as they should clearly
communicate if a fuel contains greater than
15% ethanol (E-15).
9

21_WD_OM_EN_USC_t.book Page 319

320TECHNICAL SPECIFICATIONS
(Continued)
METHYLCYCLOPENTADIENYL
M
ANGANESE TRICARBONYL (MMT) IN
G
ASOLINE
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. Gasoline
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
NOTE:Intentional tampering with the emissions control
system can result in civil penalties being assessed
against you.
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 performance and damage the emis -
sions 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 autho -
rized dealer for service assistance.
The use of fuel additives, which are now being
sold as octane enhancers, is not recom -
mended. Most of these products contain high
concentrations of methanol. Fuel system
damage or vehicle performance problems
resulting from the use of such fuels or addi -
tives is not the responsibility of the manufac-
turer and may void or not be covered under
the New Vehicle Limited Warranty.
CAUTION!

21_WD_OM_EN_USC_t.book Page 320

322TECHNICAL SPECIFICATIONS
ENGINE FLUIDS AND LUBRICANTS
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) meeting the
requirements of the manufacturer Material Standard MS.90032.
Engine Oil – 3.6L Engine We recommend you use API Certified SAE 0W-20 Engine Oil, meeting the
requirements of the manufacturer Material Standard MS-6395 such as
Mopar®, Pennzoil, Shell Helix or equivalent. Refer to your engine oil filler cap
for correct SAE grade.
Engine Oil – 5.7L Engine We recommend you use API Certified SAE 5W-20 Engine Oil, meeting the
requirements of the manufacturer Material Standard MS-6395 such as
Mopar®, Pennzoil, Shell Helix or equivalent. Refer to your engine oil filler cap
for correct SAE grade.
Engine Oil Filter We recommend you use a Mopar® Engine Oil Filter. If a Mopar® Engine Oil
Filter is unavailable only use filters that meet or exceed SAE/USCAR-36 Filter
Performance Requirements.
Fuel Selection – 3.6L Engine 87 Octane (R+M)/2 Method , 0-15% Ethanol (Do not use E-85).
Fuel Selection – 5.7L Engine 89 Octane Recommended - 87 Octane Acceptable (R+M)/2 Method,
0-15% Ethanol (Do not use E-85).

21_WD_OM_EN_USC_t.book Page 322

331
Fuel
............................................................... 318Additives................................................... 319Clean Air.................................................... 319Economy Mode.......................................... 107Ethanol...................................................... 319Gasoline.................................................... 318Materials Added........................................ 319Methanol................................................... 319Octane Rating........................................... 318Requirements................................. 318, 321Specifications............................................ 322Tank Capacity............................................ 321Fueling........................................................... 140Fuses............................................................. 286
G
Garage Door Opener (HomeLink).................... 45Gasoline, (Fuel)............................................. 318Gasoline, Clean Air........................................ 319Gasoline, Reformulated................................. 319Gear Ranges.................................................. 108Getting to Know Your Instrument Cluster........ 82Glass Cleaning............................................... 316Gross Axle Weight Rating............................... 143Gross Vehicle Weight Rating.......................... 142GVWR............................................................ 141
H
Hazard Warning Flashers.............................. 243Head Restraints............................................... 39Headlights Automatic.................................................... 50Cleaning................................................... 314High Beam/Low Beam Select Switch.......... 49Lights On Reminder..................................... 51On With Wipers............................................ 50Passing........................................................ 50Heated Mirrors................................................. 44Heated Seats................................................... 37Heated Steering Wheel.................................... 27Heater, Engine Block.................................... 104Hill Start Assist.............................................. 193HitchesTrailer Towing........................................... 145HomeLink (Garage Door Opener)..................... 45Hood Prop........................................................ 74Hood Release.................................................. 74
I
Ignition............................................................. 17Key Fob Battery Low Or Dead...................... 17Key Fob Not Detected................................. 17Keyless Ignition........................................... 17Keyless Push Button................................... 17Push Button Ignition.................................... 17Switch.......................................................... 17
Immobilizer (Sentry Key)..................................16Indicator lightBlue.............................................................98Green...........................................................97White...........................................................98Yellow..........................................................97Inside Rearview Mirror.................... 42, 43, 243Instrument Cluster....................................82, 83Display.................................................. 83, 86Menu Items.................................................87Instrument Cluster DisplayAudio...........................................................88Driver Assist.................................................88Fuel Economy..............................................88Messages....................................................88Screen Setup...............................................89Speedometer...............................................87Stop Start....................................................88Trailer Tow...................................................88Trip..............................................................88Vehicle Info..................................................87Instrument Panel Lens Cleaning................... 315Integrated Trailer Brake Control.................... 149Interior And Instrument Lights.........................52Interior Appearance Care.............................. 315Interior Lights...................................................52Intermittent Wipers (Delay Wipers)..................53InverterPower...........................................................70iPod/USB/MP3 Control....................................67
11

21_WD_OM_EN_USC_t.book Page 331

333
Warning Instrument Cluster Descriptions
.... 93Load Shed Battery Saver Mode....................... 89Load Shed Battery Saver On............................ 89Load Shed Electrical Load Reduction.............. 89Load Shed Intelligent Battery Sensor.............. 89Loading Vehicle............................................. 141Tires.......................................................... 300Locks Child Protection........................................... 26Manual........................................................ 22Power Door.................................................. 23Lubrication, Body........................................... 276Lug Nuts/Bolts.............................................. 317Luggage Carrier............................................... 77
M
Maintenance................................................... 74Maintenance Free Battery............................. 270Maintenance Schedule.................................. 264Malfunction Indicator Light
(Check Engine)....................................... 94, 100ManualService...................................................... 327Memory Feature (Memory Seats).................... 28Memory Seat................................................... 28Memory Seats And Radio................................ 28Methanol....................................................... 319Mirrors............................................................. 42Electric Remote........................................... 44Exterior Folding........................................... 44
Heated......................................................... 44Outside........................................................ 43Rearview......................................42, 43, 243Vanity.......................................................... 43Modifications/AlterationsVehicle......................................................... 10Monitor, Tire Pressure System...................... 201Mopar Parts.................................................. 326Multi-Function Control Lever............................ 48
N
New Vehicle Break-In Period......................... 104
O
Occupant Restraints..................................... 204Octane Rating, Gasoline (Fuel)..................... 318Oil Change Indicator........................................ 85Reset........................................................... 85Oil Filter, Change.......................................... 272Oil Filter, Selection........................................ 272Oil Pressure Light............................................. 93Oil, Engine..................................................... 271Capacity.................................................... 321Checking................................................... 270Dipstick.................................................... 270Disposal................................................... 272Filter......................................................... 272Filter Disposal........................................... 272Identification Logo.................................... 272Materials Added To.................................. 272
Pressure Warning Light................................93Recommendation............................ 271, 321Synthetic................................................... 272Viscosity.................................................... 321Onboard Diagnostic System.............................99Operating Precautions.....................................99Operator ManualOwner's Manual........................................ 327Outside Rearview Mirrors.................................43Overheating, Engine...................................... 258
P
Paint Care..................................................... 313Parking Brake............................................... 105ParkSense System, Rear............................... 130Passive Entry....................................................23Pets............................................................... 239Pinch Protection...............................................74Placard, Tire And Loading Information.......... 300PowerBrakes...................................................... 317Distribution Center (Fuses)....................... 287Door Locks...................................................23Inverter........................................................70Liftgate........................................................75Mirrors.........................................................44Outlet (Auxiliary Electrical Outlet).................68Seats...........................................................35Steering........................................... 117, 323Sunroof........................................................73
11

21_WD_OM_EN_USC_t.book Page 333