oil additives DODGE CHARGER 2021 Owners Manual

254SERVICING AND MAINTENANCE
Materials Added To Engine Oil
The manufacturer strongly recommends against
the addition of any additives (other than leak
detection dyes) to the engine oil. Engine oil is an
engineered product and its performance may be
impaired by supplemental additives.
Disposing Of Used Engine Oil And Oil
Filters

Care should be taken in disposing of used engine oil
and oil filters from your vehicle. Used oil and oil
filters, indiscriminately discarded, can present a
problem to the environment. Contact an authorized
dealer, service station or governmental agency for
advice on how and where used oil and oil filters can
be safely discarded in your area.

ENGINE OIL FILTER
The engine oil filter should be replaced with a new
filter at every engine oil change.
Engine Oil Filter Selection
A full-flow type disposable oil filter should be used
for replacement. The quality of replacement filters
varies considerably. Only high quality Mopar®
certified filters should be used.
ENGINE AIR CLEANER FILTER
For the proper maintenance intervals Úpage 245.
NOTE:Be sure to follow the “Severe Duty Conditions”
maintenance interval if applicable.
Engine Air Cleaner Filter Selection
The quality of replacement filters varies
considerably. Only high quality Mopar® certified
filters should be used.
AIR CONDITIONER MAINTENANCE
For best possible performance, your air conditioner
should be checked and serviced by an authorized
dealer at the start of each warm season. This
service should include cleaning of the condenser
fins and a performance test. Drive belt tension
should also be checked at this time.
WARNING!
The air induction system (air cleaner, hoses,
etc.) can provide a measure of protection in
the case of engine backfire. Do not remove the
air induction system (air cleaner, hoses, etc.)
unless such removal is necessary for repair or
maintenance. Make sure that no one is near the
engine compartment before starting the vehicle
with the air induction system (air cleaner, hoses,
etc.) removed. Failure to do so can result in
serious personal injury.WARNING!

Use only refrigerants and compressor lubri -
cants approved by the manufacturer for your air
conditioning system. Some unapproved refrig -
erants are flammable and can explode, injuring
you. Other unapproved refrigerants or lubri -
cants can cause the system to fail, requiring
costly repairs. Refer to Warranty Information
Book, for further warranty information.

The air conditioning system contains refrig -
erant under high pressure. To avoid risk of
personal injury or damage to the system,
adding refrigerant or any repair requiring lines
to be disconnected should be done by an
experienced technician.

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SERVICING AND MAINTENANCE263
AUTOMATIC TRANSMISSION
Special Additives

The manufacturer strongly recommends against
using any special additives in the transmission.
Automatic Transmission Fluid (ATF) is an engineered
product and its performance may be impaired by
supplemental additives. Therefore, do not add any
fluid additives to the transmission. Avoid using
transmission sealers as they may adversely
affect seals.

Fluid Level Check

The fluid level is preset at the factory and does
not require adjustment under normal operating
conditions. Routine fluid level checks are not
required; therefore the transmission has no dipstick.
An authorized dealer can check your transmission
fluid level using special service tools. If you notice
fluid leakage or transmission malfunction, visit
an authorized dealer immediately to have the
transmission fluid level checked. Operating the
vehicle with an improper fluid level can cause
severe transmission damage.

Fluid And Filter Changes — Eight-Speed
Transmission
Under normal operating conditions, the fluid
installed at the factory will provide satisfactory
lubrication for the life of the vehicle.
Routine fluid and filter changes are not required.
However, change the fluid and filter if the fluid
becomes contaminated (with water, etc.), or if the
transmission is disassembled for any reason.
Selection Of Lubricant
It is important to use the proper transmission fluid
to ensure optimum transmission performance
and life. Use only the manufacturer's specified
transmission fluid Úpage 300. It is important to
maintain the transmission fluid at the correct level
using the recommended fluid.
NOTE:
No chemical flushes should be used in any trans -
mission; only the approved lubricant should be used.

REAR AXLE
For normal service, periodic fluid level checks are
not required. When the vehicle is serviced for other
reasons the exterior surfaces of the axle assembly
should be inspected. If gear oil leakage is
suspected inspect the fluid level Ú page 300.

Overfilling the brake fluid reservoir can result in
spilling brake fluid on hot engine parts, causing
the brake fluid to catch fire. Brake fluid can also
damage painted and vinyl surfaces, care should
be taken to avoid its contact with these surfaces.
Do not allow petroleum based fluid to contaminate
the brake fluid. Brake seal components could be
damaged, causing partial or complete brake
failure. This could result in a collision.

CAUTION!
Do not use chemical flushes in your
transmission as the chemicals can damage your
transmission components. Such damage is not
covered by the New Vehicle Limited Warranty.
WARNING!
CAUTION!

If a transmission fluid leak occurs, visit an
authorized dealer immediately. Severe transmission
damage may occur. An authorized dealer has the
proper tools to adjust the fluid level accurately.

CAUTION!
Using a transmission fluid other than the
manufacturer’s recommended fluid may cause
deterioration in transmission shift quality and/or
torque converter shudder Úpage 300.
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F
Filters Air Cleaner
................................................. 254Air Conditioning.................................. 54, 255Engine Oil........................................ 254, 300Engine Oil Disposal................................... 254Flashers......................................................... 223Hazard Warning......................................... 223Turn Signals................................ 44, 80, 222Flash-To-Pass.................................................. 43Flooded Engine Starting.................................. 85Floor Console................................................... 55Fluid Capacities............................................. 299Fluid Leaks.................................................... 222Fluid Level ChecksBrake........................................................ 262Cooling System.......................................... 260Engine Oil.................................................. 251Fluid, Brake................................................... 301Fog Lights........................................................ 44Fold-Flat Seats................................................. 29Folding Rear Seats.......................................... 30Forward Collision Warning............................. 188Four-Way Hazard Flasher............................... 223Freeing A Stuck Vehicle................................. 242Fuel............................................................... 297Additives................................................... 298Clean Air.................................................... 297
Ethanol..................................................... 298Gasoline................................................... 297Materials Added....................................... 298Methanol.................................................. 298Octane Rating.................................. 297, 300Requirements.................................. 297, 299Specifications........................................... 300Tank Capacity........................................... 299Fuses............................................................ 264
G
Garage Door Opener (HomeLink)..................... 38Gasoline, Clean Air........................................ 297Gasoline, Reformulated................................ 297Gear Ranges.................................................... 90Glass Cleaning.............................................. 295Gross Axle Weight Rating..................... 114, 116Gross Vehicle Weight Rating................ 114, 115GVWR............................................................ 114
H
HazardDriving Through Flowing, Rising, Or Shallow Standing Water
.................................... 122Hazard Warning Flashers.............................. 223Head Restraints........................................ 34, 35Head Rests............................................... 34, 35
HeadlightsAutomatic....................................................43Cleaning.................................................... 293High Beam/Low Beam Select Switch..........43Lights On Reminder.....................................44On With Wipers............................................43Passing........................................................43Switch..........................................................41Time Delay...................................................44Washers.................................................... 251Heated Mirrors.................................................38Heater, Engine Block........................................86High Beam/Low Beam Select (Dimmer)
Switch..............................................................43Hill Start Assist.............................................. 184HitchesTrailer Towing........................................... 117Holder, Coin.....................................................55HomeLink (Garage Door Opener).....................38Hood Prop........................................................62Hood Release...................................................62
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