2020 CHRYSLER 300 oil

236SERVICING AND MAINTENANCE
ENGINE COMPARTMENT
3.6L ENGINE
1 — Power Distribution Center (Fuses) 5 — Air Cleaner Filter
2 — Engine Oil Fill 6 — Engine Oil Dipstick
3 — Brake Fluid Reservoir Access Cover 7 — Washer Fluid Reservoir Cap
4 — Engine Coolant Reservoir

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SERVICING AND MAINTENANCE237
5.7L ENGINE
1 — Power Distribution Center (Fuses) 5 — Air Cleaner Filter
2 — Engine Oil Fill 6 — Engine Oil Dipstick
3 — Brake Fluid Reservoir Access Cover 7 — Washer Fluid Reservoir Cap
4 — Engine Coolant Reservoir
7

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238SERVICING AND MAINTENANCE
CHECKING OIL LEVEL
To ensure proper engine lubrication, the engine
oil must be maintained at the correct level.
Check the oil level at regular intervals, such as
every month. The best time to check the engine
oil level is about five minutes after a fully
warmed up engine is shut off.
Checking the oil while the vehicle is on level
ground will improve the accuracy of the oil level
readings.
There are three possible dipstick types:
Crosshatched zone.
Crosshatched zone marked SAFE.
Crosshatched zone marked with MIN at the
low end of the range and MAX at the high end
of the range.
NOTE:
Always maintain the oil level within the cross -
hatch markings on the dipstick.

Adding 1 quart (1.0 liters) of oil when the reading
is at the low end of the dipstick range will raise
the oil level to the high end of the range marking.

ADDING WASHER FLUID
The windshield washer fluid reservoir is located
in the front of the engine compartment. Be sure
to check the fluid level at regular intervals. Fill
the reservoir with windshield washer solvent
(not radiator antifreeze) and operate the system
for a few seconds to flush out the residual
water.
When refilling the washer fluid reservoir, apply
some washer fluid to a cloth or towel and wipe
the wiper blades clean. This will help blade
performance.
To prevent freeze-up of your windshield washer
system in cold weather, select a solution or
mixture that meets or exceeds the temperature
range of your climate. This rating information
can be found on most washer fluid containers. The fluid reservoir will hold nearly 1 gallon
(4 liters) of washer fluid when the message
“Low Washer Fluid” appears in the instrument
cluster.
MAINTENANCE-FREE BATTERY
Your vehicle is equipped with a
maintenance-free battery. You will never have
to add water, nor is periodic maintenance
required.
NOTE:
The battery is stored under an access cover in
the trunk. Remote battery terminals are located
in the engine compartment for jump starting.
Refer to “Jump Starting Procedures” in “In Case
Of Emergency” for further information.
CAUTION!
Overfilling or underfilling the crankcase will
cause aeration or loss of oil pressure. This
could damage your engine.
WARNING!
Commercially available windshield washer
solvents are flammable. They could ignite and
burn you. Care must be exercised when filling
or working around the washer solution.

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240SERVICING AND MAINTENANCE
ENGINE OIL
Change Engine Oil

The oil change indicator system will remind you
that it is time to take your vehicle in for scheduled
maintenance. Refer to “Scheduled Servicing” in
this section for the proper maintenance intervals.

NOTE:
Under no circumstances should oil change
intervals exceed 10,000 miles (16,000 km),
12 months or 350 hours of engine run time,
whichever comes first. The 350 hours of engine
run or idle time is generally only a concern for
fleet customers.
Engine Oil Selection — 3.6L And 5.7L
Engine
For best performance and maximum protection
under all types of operating conditions, the
manufacturer only recommends engine oils
that are API Certified and meet the
requirements of FCA Material Standard
MS-6395.
NOTE:
Hemi engines (5.7L) at times can tick right after
startup and then quiet down after approxi -
mately 30 seconds. This is normal and will not harm the engine. This characteristic can be
caused by short drive cycles. For example, if the
vehicle is started then shut off after driving a
short distance. Upon restarting, you may experi
-
ence a ticking sound. Other causes could be if
the vehicle is unused for an extended period of
time, incorrect oil, extended oil changes or
extended idling. If the engine continues to tick
or if the Malfunction Indicator Light (MIL) comes
on, see the nearest authorized dealer
American Petroleum Institute (API) Engine
Oil Identification Symbol
This symbol means that the oil has
been certified by the American
Petroleum Institute (API). The
manufacturer only recommends
API Certified engine oils.
This symbol certifies 0W-20, 5W-20, 0W-30,
5W-30 and 10W-30 engine oils.
Engine Oil Viscosity (SAE Grade) — 3.6L
Engine
Mopar SAE 5W-20 engine oil approved to FCA
Material Standard MS-6395 such as Pennzoil,
Shell Helix Ultra or equivalent is recommended
for all operating temperatures. This engine oil
improves low temperature starting and vehicle
fuel economy.
The engine oil filler cap also shows the
recommended engine oil viscosity for your
engine. For information on engine oil filler cap
location, refer to the “Engine Compartment”
illustration in this section.
NOTE:
Mopar SAE 5W-30 engine oil approved to FCA
Material Standard MS-6395 such as Pennzoil,
Shell Helix Ultra or equivalent may be used
when SAE 5W-20 engine oil meeting MS-6395
is not available.
Lubricants which do not have both the engine
oil certification mark and the correct SAE
viscosity grade number should not be used.
CAUTION!
Do not use chemical flushes in your engine oil
as the chemicals can damage your engine.
Such damage is not covered by the New
Vehicle Limited Warranty.

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SERVICING AND MAINTENANCE241
Engine Oil Viscosity (SAE Grade) — 5.7L
Engine
Mopar SAE 5W-20 engine oil approved to FCA
Material Standard MS-6395 such as Pennzoil,
Shell Helix Ultra or equivalent is recommended
for all operating temperatures. This engine oil
improves low temperature starting and vehicle
fuel economy.
The engine oil filler cap also shows the
recommended engine oil viscosity for your
engine. For information on engine oil filler cap
location, refer to the “Engine Compartment”
illustration in this section.
NOTE:
Vehicles equipped with a 5.7L engine must use
SAE 5W-20 oil. Failure to do so may result in
improper operation of the Fuel Saver Tech -
nology. Refer to “Fuel Saver Technology – If
Equipped” in “Starting And Operating” for
further information.
Lubricants which do not have both the engine
oil certification mark and the correct SAE
viscosity grade number should not be used.
Synthetic Engine Oils
You may use synthetic engine oils provided the
recommended oil quality requirements are met,
and the recommended maintenance intervals
for oil and filter changes are followed.
Synthetic engine oils which do not have both the
engine oil certification mark and the correct SAE
viscosity grade number should not be used.
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
This manufacturer's engines have a full-flow
type disposable oil filter. Use a filter of this type
for replacement. The quality of replacement
filters varies considerably. Only high quality
filters should be used to ensure most efficient
service. Mopar engine oil filters are high quality
oil filters and are recommended.
ENGINE AIR CLEANER FILTER
Refer to the “Maintenance Plan” in this section
for the proper maintenance intervals.
NOTE:
Be sure to follow the “Severe Duty Conditions”
maintenance interval if applicable.
7

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242SERVICING AND MAINTENANCE
Engine Air Cleaner Filter Selection
The quality of replacement engine air cleaner
filters varies considerably. Only high quality
filters should be used to ensure most efficient
service. Mopar engine air cleaner filters are a
high quality filter and are recommended.
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.
Refrigerant Recovery And Recycling
R-134a — If Equipped
R-134a Air Conditioning Refrigerant is a
hydrofluorocarbon (HFC) that is an
ozone-friendly substance. The manufacturer
recommends that air conditioning service be
performed by an authorized dealer or other
service facilities using recovery and recycling
equipment.
NOTE:
Use only manufacturer approved A/C system
PAG compressor oil and refrigerants.
Refrigerant Recovery And Recycling
R-1234yf — If Equipped
R-1234yf Air Conditioning Refrigerant is a
hydrofluoroolefin (HFO) that is endorsed by the
Environmental Protection Agency and is an
ozone-friendly substance with a low
global-warming potential. The manufacturer
recommends that air conditioning service be
performed by an authorized dealer using
recovery and recycling equipment.
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 unap -
proved refrigerants are flammable and can
explode, injuring you. Other unapproved
refrigerants or lubricants 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.
CAUTION!
Do not use chemical flushes in your air
conditioning system as the chemicals can
damage your air conditioning components.
Such damage is not covered by the New
Vehicle Limited Warranty.

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SERVICING AND MAINTENANCE243
NOTE:
Use only manufacturer approved A/C system
PAG compressor oil, and refrigerants.
A/C Air Filter
The filter is located in the fresh air inlet under
the hood, behind a removable panel in the cowl
on the passenger side of the vehicle, next to the
windshield wipers. When installing a new filter,
ensure its proper orientation.

1. Remove the access door in the cowl screen
by pressing the retaining clips.

Access Door

2. Unsnap both ends and lift the filter access cover.
Filter Access Cover

3. Remove the used filter.
4. Install the new filter with arrows pointing in the direction of airflow, which is toward the
rear of the vehicle (text and arrows on the
filter will indicate this).

A/C Air Filter
5. Close the filter access cover.
Refer to “Scheduled Servicing” in this section
for the proper maintenance intervals.ACCESSORY DRIVE BELT INSPECTION
WARNING!
Do not attempt to inspect an accessory
drive belt with vehicle running.
When working near the radiator cooling fan,
disconnect the fan motor lead. The fan is
temperature controlled and can start at any
time regardless of ignition mode. You could
be injured by the moving fan blades.
You can be badly injured working on or
around a motor vehicle. Only do service
work for which you have the knowledge and
the proper equipment. If you have any
doubt about your ability to perform a
service job, take your vehicle to a compe
-
tent mechanic.7

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244SERVICING AND MAINTENANCE
When inspecting accessory drive belts, small
cracks that run across ribbed surface of belt
from rib to rib, are considered normal. These
are not a reason to replace belt. However,
cracks running along a rib (not across) are not
normal. Any belt with cracks running along a rib
must be replaced. Also have the belt replaced if
it has excessive wear, frayed cords or severe
glazing.

Accessory Belt (Serpentine Belt)

Conditions that would require replacement:
Rib chunking (one or more ribs has sepa -
rated from belt body)
Rib or belt wear
Longitudinal belt cracking (cracks between
two ribs)
Belt slips
“Groove jumping" (belt does not maintain
correct position on pulley)
Belt broken (note: identify and correct
problem before new belt is installed)
Noise (objectionable squeal, squeak, or
rumble is heard or felt while drive belt is in
operation)
Some conditions can be caused by a faulty
component such as a belt pulley. Belt pulleys
should be carefully inspected for damage and
proper alignment.
Belt replacement on some models requires the
use of special tools, we recommend having your
vehicle serviced at an authorized dealer.
BODY LUBRICATION
Locks and all body pivot points, including such
items as seat tracks, door hinge pivot points
and rollers, liftgate, tailgate, decklid, sliding
doors and hood hinges, should be lubricated
periodically with a lithium based grease, such
as Mopar Spray White Lube to ensure quiet,
easy operation and to protect against rust and wear. Prior to the application of any lubricant,
the parts concerned should be wiped clean to
remove dust and grit; after lubricating, excess
oil and grease should be removed. Particular
attention should also be given to hood latching
components to ensure proper function. When
performing other underhood services, the hood
latch, release mechanism and safety catch
should be cleaned and lubricated.
The external lock cylinders should be lubricated
twice a year, preferably in the Autumn and
Spring. Apply a small amount of a high quality
lubricant, such as Mopar Lock Cylinder
Lubricant directly into the lock cylinder.
WINDSHIELD WIPER BLADES
Clean the rubber edges of the wiper blades and
the windshield periodically with a sponge or soft
cloth and a mild nonabrasive cleaner. This will
remove accumulations of salt or road film.
Operation of the wipers on dry glass for long
periods may cause deterioration of the wiper
blades. Always use washer fluid when using the
wipers to remove salt or dirt from a dry
windshield.

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