2020 Ram 3500 engine

SERVICING AND MAINTENANCE395
Inspection and service should also be performed anytime a malfunction is observed or suspected. Retain all receipts.
Flush and replace power steering
fluid. X
Flush and replace engine coolant.
*** X
1. Under no circumstances should oil change intervals exceed 15,000 miles (24,000 km) or 12 months or 500 Hours, whichever comes first.
2. Under no circumstances should the air cleaner filter element exceed 30,000 miles (48,000 km) or 24 months, whichever comes first.
3. Inspect the front and rear axle surfaces every 20,000 miles (32,000 km). If gear oil leakage is suspected, check the fluid level. If using your vehicle for police, taxi, fleet, off-road or
frequent trailer towing change the axle fluid every 20,000 miles (32,000 km).
Mileage or time passed
(whichever comes first):
7,500
15,000
22,500
30,000
37,500
45,000
52,500
60,000
67,500
75,000
82,500
90,000
97,500
105,000
112,500
120,000
127,500
135,000
142,500
150,000
Or Months:6
12
18
24
30
36
42
48
54
60
66
72
78
84
90
96
102
108
114
120
Or Kilometers:
12,000
24,000
36,000
48,000
60,000
72,000
84,000
96,000
108,000
120,000
132,000
144,000
156,000
168,000
180,000
192,000
204,000
216,000
228,000
240,000
WARNING!
You can be badly injured working on or around a motor vehicle. Do only service work for which you have the knowledge and the right equipment.
If you have any doubt about your ability to perform a service job, take your vehicle to a competent mechanic.
Failure to properly inspect and maintain your vehicle could result in a component malfunction and effect vehicle handling and performance. This
could cause an accident.
CAUTION!
***The manufacturer highly recommends that all cooling system service, maintenance, and repairs be performed by your local authorized dealer.
7

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396SERVICING AND MAINTENANCE
ENGINE COMPARTMENT
6.4L ENGINE
1 — Engine Coolant Pressure Cap 6 — Battery
2 — Engine Coolant Reservoir 7 — Washer Fluid Reservoir Cap
3 — Engine Oil Fill 8 — Power Distribution Center (Fuses)
4 — Engine Oil Dipstick 9 — Power Steering Fluid Reservoir Cap
5 — Brake Fluid Reservoir Cap 10 — Air Cleaner Filter

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SERVICING AND MAINTENANCE397
6.7L DIESEL ENGINE — SIX-SPEED 68RFE
1 — Battery 7 — Brake Fluid Reservoir Cap
2 — Engine Coolant Reservoir Cap 8 — Battery
3 — Engine Coolant Pressure Reservoir 9 — Power Distribution Center (Fuses)
4 — Automatic Transmission Dipstick 10 — Washer Fluid Reservoir Cap
5 — Engine Oil Fill 11 — Power Steering Fluid Reservoir Cap
6 — Engine Oil Dipstick 12 — Air Cleaner Filter
7

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398SERVICING AND MAINTENANCE
6.7L DIESEL ENGINE — SIX-SPEED AISIN (AS69RC HD)
1 — Battery 7 — Brake Fluid Reservoir Cap
2 — Engine Coolant Reservoir Cap 8 — Battery
3 — Engine Coolant Pressure Reservoir 9 — Power Distribution Center (Fuses)
4 — Engine Oil Fill 10 — Washer Fluid Reservoir Cap
5 — Engine Oil Dipstick 11 — Power Steering Fluid Reservoir Cap
6 — Automatic Transmission Dipstick 12 — Air Cleaner Filter

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SERVICING AND MAINTENANCE399
CHECKING OIL LEVEL — GAS ENGINE

To ensure proper lubrication of your vehicle's
engine, the engine oil must be maintained at the
correct level. Check the oil level at regular
intervals, such as every fuel stop. 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. Always maintain the oil level within
the SAFE zone on the dipstick. Adding one quart
of oil when the reading is at the bottom of the
SAFE zone will result in a reading at the top of
the safe zone on these engines.
CHECKING OIL LEVEL — DIESEL ENGINE

To ensure proper lubrication of your vehicle's
engine, the engine oil must be maintained at
the correct level. Check the oil level at regular
intervals. The best time to check the oil level is
before starting the engine after it has been parked overnight. When checking oil after
operating the engine, first ensure the engine is
at full operating temperature, then wait for
30 minutes after engine shutdown to check
the oil.

Engine Oil Dipstick

Checking the oil while the vehicle is on level
ground will improve the accuracy of the oil level
readings. Add oil only when the level on the
dipstick is below the “ADD” mark. The total
capacity from the ADD mark to the Full mark is
2 qts (1.9L). Never operate the engine with oil level below
the “ADD” mark or above the upper “SAFE”
mark.
ADDING WASHER FLUID
The fluid reservoir is located under the hood
and should be checked for fluid level at regular
intervals. Fill the reservoir with windshield
washer solvent only (not radiator antifreeze).
When refilling the washer fluid reservoir, take
some washer fluid and apply it 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.
CAUTION!
Overfilling or underfilling will cause oil
aeration or loss of oil pressure. This could
damage your engine.
1 — ADD Range
2 — Full Mark
3 — SAFE Range
CAUTION!
Overfilling or underfilling the crankcase will
cause oil aeration or loss of oil pressure. This
could damage your engine.
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400SERVICING AND MAINTENANCE
After the engine has warmed up, operate the
defroster for a few minutes to reduce the
possibility of smearing or freezing the fluid on
the cold windshield. Windshield washer solution
used with water as directed on the container,
aids cleaning action, reduces the freezing point
to avoid line clogging, and is not harmful to
paint or trim.
MAINTENANCE-FREE BATTERY
Your vehicle is equipped with a
maintenance-free battery. You will never have
to add water, nor is periodic maintenance
required.
PRESSURE WASHING
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.
WARNING!
Battery fluid is a corrosive acid solution and
can burn or even blind you. Do not allow
battery fluid to contact your eyes, skin, or
clothing. Do not lean over a battery when
attaching clamps. If acid splashes in eyes
or on skin, flush the area immediately with
large amounts of water. Refer to “Jump
Starting Procedure” in “In Case Of Emer -
gency” for further information.
Battery gas is flammable and explosive.
Keep flame or sparks away from the
battery. Do not use a booster battery or any
other booster source with an output greater
than 12 Volts. Do not allow cable clamps to
touch each other.
Battery posts, terminals, and related acces -
sories contain lead and lead compounds.
Wash hands after handling.
CAUTION!
It is essential when replacing the cables on
the battery that the positive cable is
attached to the positive post and the nega -
tive cable is attached to the negative post.
Battery posts are marked positive (+) and
negative (-) and are identified on the battery
case. Cable clamps should be tight on the
terminal posts and free of corrosion.
If a “fast charger” is used while the battery
is in the vehicle, disconnect both vehicle
battery cables before connecting the
charger to the battery. Do not use a “fast
charger” to provide starting voltage.
CAUTION!
Cleaning the engine compartment with a high
pressure washer is not recommended.
Precautions have been taken to safeguard all
parts and connections however, the
pressures generated by these machines is
such that complete protection against water
ingress cannot be guaranteed.

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SERVICING AND MAINTENANCE401
DEALER SERVICE
An authorized dealer has the qualified service
personnel, special tools, and equipment to
perform all service operations in an expert
manner. Service Manuals are available which
include detailed service information for your
vehicle. Refer to these Service Manuals before
attempting any procedure yourself.
NOTE:
Intentional tampering with emissions control
systems may void your warranty and could
result in civil penalties being assessed against
you.
ENGINE OIL
Change Engine Oil — Gas Engine
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 chapter for further
information.
NOTE:
Under no circumstances should oil change
intervals exceed 8,000 miles (13,000 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.
Change Engine Oil — Diesel Engine
Refer to the “Scheduled Servicing” for the
proper maintenance intervals.
Engine Oil Selection — Gas 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-12633. NOTE:
Hemi engine (6.4L) 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.
Engine Oil Selection — Diesel Engine
For best performance and maximum protection
under all types of operating conditions, the
manufacturer only recommends engine oils
that are API CK-4 certified and meet the
requirements of FCA US LLC. Use Mopar or an
equivalent oil meeting FCA Material Standard
MS-10902. Products meeting Cummins CES
20081 may also be used. The identification of
these engine oils are typically located on the
back of the oil container.WARNING!
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 competent mechanic.7

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402SERVICING AND MAINTENANCE
American Petroleum Institute (API) Engine
Oil Identification Symbol — Gas Engine
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.
American Petroleum Institute (API) Engine
Oil Identification Symbol — Diesel Engine
This symbol means that the oil has
been certified by the American
Petroleum Institute (API). The
manufacturer only recommends API
Certified engine oils.
Oils with a high ash content may produce
damaging deposits on cylinder head valves
and/or aftertreatment system damage. A maximum sulfated ash content of 1.00 mass %
is recommended for all oil used in the engine.
The same oil change interval is to be followed
for synthetic oil as for petroleum based oil. Also,
synthetic oil must meet the same performance
specifications as petroleum oil.
Engine Oil Viscosity — Gas Engine
Use Mopar SAE 0W-40 engine oil approved to
FCA Material Standard MS-12633 such as
Pennzoil Ultra equivalent is recommended for
all operating temperatures.
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.
Lubricants which do not have both the engine
oil certification mark and the correct SAE
viscosity grade number should not be used.
Engine Oil Viscosity — Diesel Engine

In ambient temperatures above 0°F (-18°C), we
recommend you use SAE 10W-30 engine oil such
as Mopar, Shell Rotella and Shell Rimula that
meets FCA Material Standard MS-10902 and the
API CK-4 engine oil category is required. Products
meeting Cummins CES 20081 may also be used.
The identification of these engine oils is typically
located on the back of the oil container.
In ambient temperatures below 0°F (-18°C), we
recommend you use SAE 5W-40
synthetic engine
oil such as Mopar, Shell Rotella and Shell Rimula
that meets FCA Material Standard MS-10902
and the API CK-4 engine oil category is required.

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.
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.
CAUTION!
Failure to use SAE 5W-40 synthetic engine oil
in ambient temperatures below 0°F (-18°C)
could result in severe engine damage.

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