2018 Ram 2500 engine oil

ignition from OFF or ACC to RUN, and will
illuminate the "Wait To Start" telltale. The
engine will not immediately crank, this is
normal operation.
2. The “Wait To Start" telltale will remain on for a period of time that varies depending
on the engine temperature.
3. While the "Wait to Start" telltale is on, the instrument cluster will additionally dis-
play a gauge or bar whose initial length
represents the full "Wait to Start" time
period. Its length will decrease until it
disappears when the "Wait to Start" time
has elapsed.
CAUTION!
If the “Water in Fuel Indicator Light” re-
mains on, DO NOT START engine before
you drain the water from the fuel filters to
avoid engine damage. Refer to “Draining
Fuel/Water Separator Filter” in “Dealer
Service” under “Servicing And Mainte-
nance” for further information. 4. After the engine “Wait To Start” telltale
goes off, the engine will automatically
crank.
CAUTION!
Do not crank engine for more than 15 sec-
onds at a time or starter motor damage
may result. Turn the ignition switch to the
OFF position and wait at least two minutes
for the starter to cool before repeating start
procedure.
5. After engine start-up, check to see that there is oil pressure.
6. Allow the engine to idle about three min- utes until the manifold heaters have com-
pleted the post-heat cycle.
7. Release the parking brake and drive.
NOTE:
• Engine idle speed will automatically in- crease to 1,000 RPM and engage the Vari-
able Geometry Turbocharger at low coolant
temperatures to improve engine warm-up. • The engine may not automatically crank
after the engine "Wait To Start" telltale goes
off if a door or the hood is ajar.
• If the engine stalls, or if the ignition switch is left ON for more than two minutes after
the “Wait To Start Light” goes out, reset the
grid heaters by turning the ignition switch
to the OFF position for at least five seconds
and then back ON. Repeat steps 1 through
7 of “Keyless Enter-N-Go Starting Proce-
dure – Engine Manifold Air Temperature
Below 66° F (19° C).”
Extreme Cold Weather
The Cummins diesel engine is equipped with
several features designed to assist cold
weather starting and operation:
• The engine block heater is a resistance
heater installed in the water jacket of the
engine just above and behind the oil filter.
It requires a 110–115 Volt AC electrical
outlet with a grounded, three-wire exten-
sion cord.STARTING AND OPERATING
148

NOTE:
The engine block heater cord is a factory
installed option. If your vehicle is not
equipped, heater cords are available from
your authorized Mopar dealer.
• A 12 Volt heater built into the fuel filterhousings aid in preventing fuel gelling. It is
controlled by a built-in thermostat.
• A heated intake air system both improves engine starting and reduces the amount of
white smoke generated by a warming
engine.NORMAL OPERATION — 3.0L DIESEL
ENGINE
Observe the following when the diesel engine
is operating.
• All message center lights are off.
• Malfunction Indicator Light (MIL) is off.
• Engine Oil Pressure telltale is not illumi-nated.
• Voltmeter operation:
The voltmeter may show a gauge fluctuation
at various engine temperatures. This is
caused by the glow plug heating system. The
number of cycles and the length of the cy-
cling operation is controlled by the engine
control module. Glow plug heater operation
can run for several minutes, once the heater
operation is complete the voltmeter needle
will stabilize.
Cold Weather Precautions
Operation in ambient temperature below
32°F (0°C) may require special consider-
ations. The following charts suggest these
options:
Winter Front Usage
A winter front or cold weather cover is to be
used in ambient temperatures below 32°F
(0°C), especially during extended idle condi-
Winter Front Cover
149

tions. This cover is equipped with four flaps
for managing total grille opening in varying
ambient temperatures. If a winter front or
cold weather cover is to be used the flaps
should be in the full open position to allow air
flow to the charge air cooler and automatic
transmission oil cooler. When ambient tem-
peratures drop below 0°F (-17°C) the four
flaps need to be closed. A suitable cold
weather cover is available from your Mopar
dealer.Stopping The Engine
After full load operation, idle the engine for a
few minutes before shutting it down. This
idle period will allow the lubricating oil and
coolant to carry excess heat away from the
turbocharger.NOTE:
Refer to the following chart for proper engine
shutdown.
Driving Condition
LoadTurbocharger Temperature Idle Time (min.) Before Engine Shut-
down
Stop and Go EmptyCoolNone
Stop and Go Medium 0.5
Highway Speeds MediumWarm1.0
City Traffic Maximum GCWR 1.5
Highway Speeds Maximum GCWR 2.0
Uphill Grade Maximum GCWR Hot2.5
NOTE:
Under certain conditions the engine fan will
run after the engine is turned off. These
conditions are under high load and high tem-
perature conditions.
STARTING AND OPERATING
150

NORMAL OPERATION — 6.7L DIESEL
ENGINE
Observe the following when the engine is
operating.
• All message center lights are off.
• Malfunction Indicator Light (MIL) is off.
• Engine oil pressure is above 10 psi(69 kPa) at idle.
• Voltmeter operation:
The voltmeter may show a gauge fluctuation
at various engine temperatures. This cycling
operation is caused by the post-heat cycle of
the intake manifold heater system. The num-
ber of cycles and the length of the cycling
operation is controlled by the engine control
module. Post-heat operation can run for sev-
eral minutes, and then the electrical system
and voltmeter needle will stabilize.
The cycling action will cause temporary dim-
ming of the headlamps, interior lamps, and
also a noticeable reduction in blower motor
speed.
Cold Weather Precautions
Operation in ambient temperature below
32°F (0°C) may require special consider-
ations. The following charts suggest these
options:
Winter Front Cover Usage
A winter front or cold weather cover is to be
used in ambient temperatures below 32°F
(0°C), especially during extended idle condi-
tions. This cover is equipped with four flaps
for managing total grille opening in varying
ambient temperatures. If a winter front or
cold weather cover is to be used the flaps
should be left in the full open position to
allow air flow to the charge air cooler and
automatic transmission oil cooler. When am-
bient temperatures drop below 0°F (-17°C)
the four flaps need to be closed. A suitable
cold weather cover is available from your
Mopar dealer.
Engine Idling
Avoid prolonged idling, long periods of idling
may be harmful to your engine because com-
bustion chamber temperatures can drop so low that the fuel may not burn completely.
Incomplete combustion allows carbon and
varnish to form on piston rings, engine valves,
and injector nozzles. Also, the unburned fuel
can enter the crankcase, diluting the oil and
causing rapid wear to the engine.
If the engine is allowed to idle or the truck is
driven on low engine speed drive cycles for
more than 2 hours, the system will automati-
cally enter an emissions operating mode that
will increase the engine idle speed to
900 RPM (1050 RPM for Chassis Cab).
While in this mode, which is designed to help
maintain the diesel particulate filter, the en-
gine idle speed will return to normal when the
brake pedal is applied. A small change in
engine tone or a slight change in engine
performance while accelerating may also be
noticeable at speeds below 20 mph
(32 kmh). This operating mode may last for
up to an hour of idle time, or around 20 min-
utes of driving time.
Your truck may have been ordered with an
optional voltage monitoring idle up feature. If
a load is placed on the electrical system while
the truck is in park, this feature will attempt
151

to maintain normal system voltage by auto-
matically increasing engine idle speed. You
may notice several consecutive increases in
idle speed, up to a maximum of 1450 RPM,
as the system will attempt to utilize the
smallest increase in idle speed necessary to
maintain normal system voltage. The idle
speed will return to normal when either the
electrical load is removed, or when the brake
pedal is applied.
NOTE:
For instrument cluster display messages re-
lated to the vehicle's exhaust system, refer to
“Instrument Cluster Display” in “Getting To
Know Your Instrument Panel” for further in-
formation.
Idle-Up Feature — Automatic Transmission
Only
The driver-controlled high idle speed feature
will help increase cylinder temperatures and
provide additional cab heat, however, exces-
sive idling may still cause the exhaust after-
treatment system to not properly regenerate.
Extended periods of idle time should be
avoided.The Idle-Up feature uses the speed control
switches to increase engine idle speed and
quickly warm the vehicle's interior.
1. With the transmission in PARK, the park-
ing brake applied, and the engine run-
ning, push the speed control switch to the
ON position, then push the SET switch.
2. The engine RPM will go up to 1100 RPM. To increase the RPM, push and hold the
ACCEL/RESUME switch and the idle
speed will increase to approximately
1500 RPM. To decrease the RPM, push
and hold the DECEL switch and the idle
speed will decrease to approximately
1100 RPM.
3. To cancel the Idle–Up feature, either push the CANCEL switch, push the ON/OFF
switch, or press the brake pedal.Stopping The Engine
Idle the engine a few minutes before routine
shutdown. After full load operation, idle the
engine three to five minutes before shutting it
down. This idle period will allow the lubricat- ing oil and coolant to carry excess heat away
from the combustion chamber, bearings, in-
ternal components, and turbocharger. This is
especially important for turbocharged,
charge air-cooled engines.
NOTE:
• During engine shut down on vehicles
equipped with manual transmissions, it is
normal for the diesel engine to resonate
heavily for a moment during engine shut
off. When the engine is connected to a
manual transmission, this resonance
causes load gear rattle from the transmis-
sion. This is commonly referred to as “shut
down rattle.” The manufacturer recom-
mends performing engine shut down with
the clutch pedal pushed to the floor (clutch
disengaged). When engine shut down is
performed in this manner the rattle is re-
duced (not eliminated).
• Refer to the following chart for proper en- gine shutdown.
STARTING AND OPERATING
152

Driving ConditionLoadTurbocharger Temperature Idle Time (min.) Before Engine Shut-
down
Stop and Go EmptyCoolLess than One
Stop and Go Medium -One
Highway Speeds MediumWarmTwo
City Traffic Maximum GCWR -Three
Highway Speeds Maximum GCWR -Four
Uphill Grade Maximum GCWR HotFive
ENGINE BREAK-IN
RECOMMENDATIONS — GASOLINE
ENGINE
A long break-in period is not required for the
engine and drivetrain (transmission and axle)
in your vehicle.
Drive moderately during the first 300 miles
(500 km). After the initial 60 miles
(100 km), speeds up to 50 or 55 mph (80 or
90 km/h) are desirable.
While cruising, brief full-throttle acceleration
within the limits of local traffic laws contrib-
utes to a good break-in. Wide-open throttle
acceleration in low gear can be detrimental
and should be avoided. The engine oil installed in the engine at the
factory is a high-quality energy conserving
type lubricant. Oil changes should be consis-
tent with anticipated climate conditions un-
der which vehicle operations will occur. For
the recommended viscosity and quality
grades, refer to “Fluids And Lubricants” in
“Technical Specifications”.
CAUTION!
Never use Non-Detergent Oil or Straight
Mineral Oil in the engine or damage may
result.
NOTE:
A new engine may consume some oil during
its first few thousand miles (kilometers) of
operation. This should be considered a nor-
mal part of the break-in and not interpreted
as a problem. Please check your oil level with
the engine oil indicator often during the
break in period. Add oil as required.
153

ENGINE BREAK-IN
RECOMMENDATIONS — 3.0L DIESEL
The diesel engine does not require a break-in
period due to its construction. Normal opera-
tion is allowed, providing the following rec-
ommendations are followed:
• Warm up the engine before placing it underload.
• Do not operate the engine at idle for pro- longed periods.
• Use the appropriate transmission gear to prevent engine lugging.
• Observe vehicle oil pressure and tempera- ture indicators.
• Check the coolant and oil levels frequently.
• Vary throttle position at highway speeds when carrying or towing significant weight.
NOTE:
Light duty operation such as light trailer
towing or no load operation will extend the
time before the engine is at full efficiency.
Reduced fuel economy and power may be
seen at this time. The engine oil installed in the engine at the
factory is a high-quality energy conserving
type lubricant. Oil changes should be consis-
tent with anticipated climate conditions un-
der which vehicle operations will occur. The
recommended viscosity and quality grades
are shown under “Fluids And Lubricants” in
"Technical Specifications” in this manual.
NON-DETERGENT OR STRAIGHT MINERAL
OILS MUST NEVER BE USED.
ENGINE BREAK-IN
RECOMMENDATIONS — 6.7L DIESEL
The Cummins turbocharged diesel engine
does not require a break-in period due to its
construction. Normal operation is allowed,
providing the following recommendations are
followed:
• Warm up the engine before placing it under
load.
• Do not operate the engine at idle for pro- longed periods.
• Use the appropriate transmission gear to prevent engine lugging. • Observe vehicle oil pressure and tempera-
ture indicators.
• Check the coolant and oil levels frequently.
• Vary throttle position at highway speeds when carrying or towing significant weight.
NOTE:
Light duty operation such as light trailer
towing or no load operation will extend the
time before the engine is at full efficiency.
Reduced fuel economy and power may be
seen at this time.
For additional vehicle break-in requirements,
refer to “Trailer Towing” in “Starting And
Operating” of the Owner’s Manual.
Because of the construction of the Cummins
turbocharged diesel engine, engine run-in is
enhanced by loaded operating conditions
which allow the engine parts to achieve final
finish and fit during the first 6,000 miles
(10 000 km).STARTING AND OPERATING
154

CavityCartridge Fuse Micro Fuse Description
F52 –5 Amp Tan Battery Sensor
F53 –20 Amp Yellow Trailer Tow – Left Turn/Stop Lights
F54 –20 Amp Yellow Adjustable Pedals
F56 –15 Amp Blue Additional Diesel Content – If Equipped
F57 –20 Amp Yellow Transmission
F58 –20 Amp Yellow Spare Fuse
F59 –10 Amp Red SCR Relay – If Equipped
F60 –15 Amp Blue Underhood Lamp
F61 –10 Amp Red (1500 LD Die-
sel & Cummins Diesel) PM Sensor – If Equipped
F62 –10 Amp Red Air Conditioning Clutch
F63 –20 Amp Yellow Ignition Coils (Gas), Urea Heater (Cummins Diesel)
F64 –25 Amp Clear Fuel Injectors / Powertrain
F65 –– Spare Fuse
F66 –10 Amp Red Sunroof / Passenger Window Switches / Rain Sensor
F67 –10 Amp Red CD / DVD / Bluetooth Hands-free Module – If Equipped
F69 –15 Amp Blue Mod SCR 12V (Cummins Diesel) – If Equipped
F70 –30 Amp Green Fuel Pump Motor
F71 –25 Amp Clear Amplifier
F72 –10 Amp Red PCM – If Equipped
F73 –20 Amp Yellow Fuel Transfer Pump (HD Only) – If Equipped
F74 –20 Amp Yellow (Gas Engine
& 1500 LD Diesel) Brake Vacuum Pump Gas/Diesel – If Equipped
IN CASE OF EMERGENCY
206