fuel Ram 1500 2018 Workshop Manual

position, there may be a problem with your
water separator wiring or sensor. See your
authorized dealer for service.
Upon proper draining of the water from both
fuel filters, the “Water In Fuel Indicator
Light” will remain illuminated for approxi-
mately 10 seconds. If the water was drained
while the engine was running, the “Water In
Fuel Indicator Light” may remain on for ap-
proximately three minutes.
NOTE:
Care should be taken in disposing of used
fluids from your vehicle. Used fluids, indis-
criminately discarded, can present a problem
to the environment. Contact an authorized
dealer, service station, or government agency
for advice on recycling programs and for
where used fluids and filters can be properly
disposed of in your area.
Drain the fuel/water separator filters when
the “Water In Fuel Indicator Light” is ON.
Within 10 minutes of vehicle shutdown, turn
the engine mounted filter drain valve (located
on the side of the filter assembly) counter-
clockwise 1/4 turn, and turn the under body
mounted filter drain valve (located on thebottom of the filter assembly) counterclock
wise 1 full turn. Then turn the ignition switch
to the ON position, and allow any accumu-
lated water to drain. Leave the drain valve
open until all water and contaminants have
been removed. When clean fuel is visible,
close the drain valves by turning them fully
clockwise, and turn the ignition switch to
OFF.
If more than a couple ounces/milliliters of
fuel have been drained, follow the directions
for “Priming If The Engine Has Run Out Of
Fuel.”
Engine Mounted Fuel Filter
Replacement
NOTE:
• Using a fuel filter that does not meet the
manufacturer's filtration and water separat-
ing requirements can severely impact fuel
system life and reliability.
• The engine mounted filter housing is equipped with a No-Filter-No-Run (NFNR)
feature. Engine will not run if:
1. No filter is installed. 2. Inferior/Non-approved filter is used.
Use of OEM filter is required to ensure
vehicle will run.
CAUTION!
• Diesel fuel will damage blacktop pavingsurfaces. Drain the filter into an appro-
priate container.
• Do not prefill the fuel filter when install-
ing a new fuel filter. There is a possibility
debris could be introduced into the fuel
filter during this action. It is best to
install the filter dry and allow the in-tank
lift pump to prime the fuel system.
1. Ensure engine is turned off.
2. Place drain pan under the fuel filter drain hose.
3. Open the water drain valve 1/4 turn coun- terclockwise and completely drain fuel
and water into the approved container.
4. Close the water drain valve.
5. Remove lid using a socket or strap wrench. Rotate counterclockwise for re-
moval. Remove used o-ring and discard it.
SERVICING AND MAINTENANCE
254

6. Remove the used filter cartridge from thehousing and dispose of according to your
local regulations.
7. Wipe clean the sealing surfaces of the lid and housing.
8. Install new o-ring back into ring groove on the filter housing and lubricate with clean
engine oil.
9. Remove new filter cartridge from plastic bag and install into housing.
NOTE:
Do not remove cartridge from bag until
you reach this step in order to keep car-
tridge clean.
10. Push down on the cartridge to ensure it is properly seated. Do not pre-fill the filter
housing with fuel.
11. Install lid onto housing and tighten to 22.5 ft lbs (30.5 N.m). Do not over-
tighten the lid.
12. Prime the engine using the procedure in “Priming If The Engine Has Run Out Of
Fuel.” Then start the engine and confirm
there are no leaks.Underbody Mounted Fuel Filter
Replacement
NOTE:
• Using a fuel filter that does not meet themanufacturer's filtration and water separat-
ing requirements can severely impact fuel
system life and reliability.
• The underbody mounted filter housing will cause the engine not to run if:
1. No filter is installed.
CAUTION!
• Diesel fuel will damage blacktop paving surfaces. Drain the filter into an appro-
priate container.
• Do not prefill the fuel filter when install-
ing a new fuel filter. There is a possibility
debris could be introduced into the fuel
filter during this action. It is best to
install the filter dry and allow the in-tank
lift pump to prime the fuel system.
1. Ensure engine is turned off. 2. Place drain pan under the fuel filter drain
hose.
3. Open the water drain valve 1 full turn counterclockwise and completely drain
fuel and water into the approved
container.
4. Close the water drain valve.
5. Remove lid using a socket or strap wrench. Rotate counterclockwise for re-
moval. Remove used o-ring and discard it.
6. Remove the used filter cartridge from the housing and dispose of according to your
local regulations.
7. Wipe clean the sealing surfaces of the lid and housing.
8. Install new o-ring back into ring groove on the filter housing and lubricate with clean
engine oil.
NOTE:
WIF sensor is re-usable. Service kit comes
with new o-ring for filter canister and WIF
sensor.
255

Priming If The Engine Has Run
Out Of Fuel
WARNING!
Do not open the high pressure fuel system
with the engine running. Engine operation
causes high fuel pressure. High pressure
fuel spray can cause serious injury or
death.
1. Add a substantial amount of fuel to the tank, approximately 2 to 5 gal (8L to
19L).
2. Turn ignition switch to the start position to engage starter for one second, return ig-
nition switch to run position. This will
activate in tank fuel pump for approxi-
mately 15 seconds. Repeat this process
twice.
3. Start the engine using the “Normal Start- ing” procedure. Refer to “Starting Proce-
dures” in “Starting and Operating” for
further information.
CAUTION!
Do not engage the starter motor for more
than 15 seconds at a time. Allow two
minutes between the cranking intervals.
NOTE:
The engine may run rough until the air is
forced from all the fuel lines.
WARNING!
Do not use alcohol or gasoline as a fuel
blending agent. They can be unstable un-
der certain conditions and be hazardous or
explosive when mixed with diesel fuel.
CAUTION!
Due to lack of lubricants in alcohol or
gasoline, the use of these fuels can cause
damage to the fuel system. NOTE:
• A maximum blend of 5% biodiesel, meet-
ing ASTM specification D-975 may be used
with your Cummins diesel engine. (Chassis
Cab models not configured with B20 capa-
bility.)
• A maximum blend of 20% biodiesel, meet- ing ASTM specification D-7467 may be
used with your Cummins diesel engine.
(Pickup models and Chassis Cab models
configured with B20 capability.)
• Use of biodiesel mixture in excess of 20% can negatively impact the fuel filter's abil-
ity to separate water from the fuel, resulting
in high pressure fuel system corrosion or
damage.
• Ethanol blends are not recommended or approved for use with your Cummins diesel
engine.
• In addition, commercially available fuel ad- ditives are not necessary for the proper
operation of your Cummins diesel engine.
SERVICING AND MAINTENANCE
256

WARNING!
Overloading of your tires is dangerous.
Overloading can cause tire failure, affect
vehicle handling, and increase your stop-
ping distance. Use tires of the recom-
mended load capacity for your vehicle.
Never overload them.
Tires — General Information
Tire Pressure
Proper tire inflation pressure is essential to
the safe and satisfactory operation of your
vehicle. Four primary areas are affected by
improper tire pressure:
• Safety and Vehicle Stability
• Economy
• Tread Wear
• Ride ComfortSafety
WARNING!
• Improperly inflated tires are dangerous
and can cause collisions.
• Underinflation increases tire flexing and
can result in overheating and tire failure.
• Overinflation reduces a tire's ability to cushion shock. Objects on the road and
chuckholes can cause damage that re-
sult in tire failure.
• Overinflated or underinflated tires can
affect vehicle handling and can fail sud-
denly, resulting in loss of vehicle con-
trol.
• Unequal tire pressures can cause steer-
ing problems. You could lose control of
your vehicle.
• Unequal tire pressures from one side of
the vehicle to the other can cause the
vehicle to drift to the right or left.
• Always drive with each tire inflated to
the recommended cold tire inflation
pressure. Both under-inflation and over-inflation affect
the stability of the vehicle and can produce a
feeling of sluggish response or over respon-
siveness in the steering.
NOTE:
• Unequal tire pressures from side to side
may cause erratic and unpredictable steer-
ing response.
• Unequal tire pressure from side to side may cause the vehicle to drift left or right.
Fuel Economy
Underinflated tires will increase tire rolling
resistance resulting in higher fuel consump-
tion.
Tread Wear
Improper cold tire inflation pressures can
cause abnormal wear patterns and reduced
tread life, resulting in the need for earlier tire
replacement.
Ride Comfort And Vehicle Stability
Proper tire inflation contributes to a comfort-
able ride. Over-inflation produces a jarring
and uncomfortable ride.
SERVICING AND MAINTENANCE
264

FLUID CAPACITIES — GAS ENGINE
U.S.Metric
Fuel (Approximate)
1500 Regular Cab Shortbed/Crew Quad Cab Models 26 Gallons98 Liters
1500 Regular Cab Longbed/Crew Quad Cab Models (Optional) 32 Gallons121 Liters
2500/3500 Shortbed Models 31 Gallons117 Liters
2500/3500 Longbed Models 32 Gallons121 Liters
Engine Oil With Filter
3.6L Engine (We recommend you use SAE 5W-20, API Certified) 6 Quarts5.6 Liters
5.7L Engines (We recommend you use SAE 5W-20, API Certified) 7 Quarts6.6 Liters
6.4L Engines (We recommend you use SAE 0W-40 engine oil meeting the require-
ments of FCA Material Standard MS-12633 for use in all operating temperatures.) 7 Quarts
6.6 Liters
Cooling System
3.6L Engine (We recommend you use Mopar Antifreeze/Coolant 10 Year/150,000 Mile
Formula that meets the requirements of FCA Material Standard MS.90032.) 13.7 Quarts
13 Liters
5.7L Engine – 1500 Models (We recommend you use Mopar Antifreeze/Coolant
10 Year/150,000 Mile Formula that meets the requirements of FCA Material Standard
MS.90032.) 18.3 Quarts
17.3 Liters
5.7L Engine – 2500/3500 Models (We recommend you use Mopar Antifreeze/Coolant
10 Year/150,000 Mile Formula that meets the requirements of FCA Material Standard
MS.90032.) 18.3 Quarts
17.3 Liters
6.4 Liter Engine – 2500/3500 Models (We recommend you use Mopar Antifreeze/
Coolant 10 Year/150,000 Mile Formula that meets the requirements of FCA Material
Standard MS.90032.) 16.6 Quarts
15.7 Liters
TECHNICAL SPECIFICATIONS
278

FLUID CAPACITIES — 1500 3.0L DIESEL
U.S.Metric
Fuel (Approximate)
3.0L Diesel Engine 26 Gallons98.5 Liters
Diesel Exhaust Fluid Tank 8 Gallons30.3 Liters
Engine Oil With Filter
3.0L Liter Diesel Engine
(SAE 5W-40 Synthetic, API CJ-4) 10.5 Quarts
10 Liters
Cooling System
3.0L Turbo Diesel Engine (Mopar Engine
Coolant/Antifreeze 10 Year/150,000 Mile For-
mula OAT (Organic Additive Technology)) 11.6 Quarts
11 Liters
FLUID CAPACITIES — 6.7L CUMMINS DIESEL ENGINE
U.S.Metric
Fuel (Approximate)
2500/3500 Standard Cab Longbed Models 28 Gallons106 Liters
2500/3500 Crew/Mega Cab Shortbed Models 31 Gallons129 Liters
2500/3500 Crew Cab Longbed Models 32 Gallons132 Liters
Standard Rear Tank – Chassis Cab Only 52 Gallons197 Liters
Optional Midship Tank – Chassis Cab Only 22 Gallons83 Liters
Diesel Exhaust Fluid Tank (Approximate) –
2500/3500 Models 5.5 Gallons
21 Liters
279

ComponentFluid, Lubricant, or Genuine Part
Engine Oil – 6.4L For best performance and maximum protection under all types of operat-
ing conditions, the manufacturer only recommends full synthetic engine
oils that meet the American Petroleum Institute (API) categories of SN.
The manufacturer recommends the use of Pennzoil Ultra 0W-40 or
equivalent Mopar engine oil meeting the requirements of FCA Material
Standard MS-12633 for use in all operating temperatures.
Engine Oil Filter We recommend you use Mopar brand Engine Oil Filters.
Spark Plugs We recommend you use Mopar Spark Plugs.
Fuel Selection – 3.6L Engine 87 Octane, 0-15% Ethanol.
Fuel Selection – 3.6L Flex Fuel (E-85) Engine – If Equipped 87 Octane, Up To 85% Ethanol.
Fuel Selection – 5.7L/6.4L Engines 89 Octane Recommended - 87 Octane Acceptable, 0-15% Ethanol.
CAUTION!
• Mixing of engine coolant (antifreeze)
other than specified Organic Additive
Technology (OAT) engine coolant (anti-
freeze), may result in engine damage
and may decrease corrosion protection.
Organic Additive Technology (OAT) en-
gine coolant is different and should not
be mixed with Hybrid Organic Additive
Technology (HOAT) engine coolant (anti-
freeze) or any “globally compatible”
coolant (antifreeze). If a non-OAT engine
CAUTION!
coolant (antifreeze) is introduced into
the cooling system in an emergency, the
cooling system will need to be drained,
flushed, and refilled with fresh OAT cool-
ant (conforming to MS.90032), by an
authorized dealer as soon as possible.
• Do not use water alone or alcohol-based
engine coolant (antifreeze) products. Do
not use additional rust inhibitors or an-
tirust products, as they may not be com-
CAUTION!
patible with the radiator engine coolant
and may plug the radiator.
• This vehicle has not been designed for
use with propylene glycol-based engine
coolant (antifreeze). Use of propylene
glycol-based engine coolant (antifreeze)
is not recommended.
281

FLUIDS AND LUBRICANTS — 3.0L DIESEL ENGINE
Engine
ComponentFluid, Lubricant, or Genuine Part
Engine Coolant We recommend you use Mopar Antifreeze/Coolant 10 Year/150,000 Mile Formula OAT (Organic Additive Technology).
Engine Oil We recommend you use 5W-40
syntheticengine oil such as Mopar or Shell Rotella that meets FCA Material Standard
MS-10902 and the API CJ-4 engine oil category is required.
Engine Oil Filter We recommend you use Mopar Engine Oil Filters.
Fuel Filters We recommend you use Mopar Fuel Filter. Must meet 3 micron rating.
Using a fuel filter that does not meet the
manufacturers filtration and water separating requirements can severely impact fuel system life and reliability.
Fuel Selection Use good quality diesel fuel from a reputable supplier in your vehicle. Federal law requires that you must fuel this vehicle
with Ultra Low Sulfur Highway Diesel fuel (15 ppm Sulfur maximum) and prohibits the use of Low Sulfur Highway Diesel
fuel (500 ppm Sulfur maximum) to avoid damage to the emissions control system.
For most year-round service, No. 2 diesel fuel meeting ASTM specification D-975 Grade S15 will provide good
performance. We recommend you use a blend of up to 5% biodiesel, meeting ASTM specification D-975 with your diesel
engine.This vehicle is compatible with biodiesel blends greater than 5% but no greater than 20% biodiesel meeting ASTM
specification D-7467 provided the shortened maintenance intervals are followed as directed.
Diesel Exhaust Fluid Mopar Diesel Exhaust Fluid (API Certified) (DEF) or equivalent that has been API Certified to the ISO 22241 standard.
Use of fluids not API Certified to ISO 22241 may result in system damage.
NOTE:
If climatized or diesel Number 1 ULSD fuel is
not available, and you are operating below
(20°F/-6°C), in sustained arctic conditions,
Mopar Premium Diesel Fuel Treatment (or
equivalent) is recommended to avoid gelling.CAUTION!
• Mixing of engine coolant (antifreeze)
other than specified Organic Additive
Technology (OAT) engine coolant (anti-
freeze), may result in engine damage
CAUTION!
and may decrease corrosion protection.
Organic Additive Technology (OAT) en-
gine coolant is different and should not
be mixed with Hybrid Organic Additive
Technology (HOAT) engine coolant (anti-
283

FLUIDS AND LUBRICANTS — 6.7L DIESEL ENGINES
Engine
ComponentFluid, Lubricant, or Genuine Part
Engine Coolant We recommend you use Mopar Antifreeze/Coolant 10 Year/150,000 Mile Formula OAT (Organic Additive Technology).
Engine Oil In ambient temperatures above 0°F (-18°C), we recommend you use 15W-40 engine oil such as Mopar, Shell Rotella
and Shell Rimula that meets FCA Material Standard MS-10902 and the API CJ-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 5W-40
syntheticengine oil such as Mopar, Shell
Rotella and Shell Rimula that meets FCA Material Standard MS-10902 and the API CJ-4 engine oil category is required.
Engine Oil Filter We recommend you use Mopar Engine Oil Filters.
Fuel Filters We recommend you use Mopar Fuel Filter. Must meet 3 micron rating.
Using a fuel filter that does not meet the
manufacturers filtration and water separating requirements can severely impact fuel system life and reliability.
Crankcase Ventilation Filter We recommend you use Mopar CCV Filter.
Fuel Selection Use good quality diesel fuel from a reputable supplier in your vehicle. Federal law requires that you must fuel this
vehicle with Ultra Low Sulfur Highway Diesel fuel (15 ppm Sulfur maximum) and prohibits the use of Low Sulfur
Highway Diesel fuel (500 ppm Sulfur maximum) to avoid damage to the emissions control system.
For most year-round service, No. 2 diesel fuel meeting ASTM specification D-975 Grade S15 will provide good
performance.
If climatized or diesel Number 1 ULSD fuel is not available, and you are operating below (20°F/-6°C), in sustained arctic
conditions, Mopar Premium Diesel Fuel Treatment (or equivalent) is recommended to avoid gelling.
This vehicle is fully compatible with biodiesel blends up to 5% biodiesel meeting ASTM specification D-975.
Pickup models,
and Chassis Cab models configured with optional B20 capability, are additionally compatible with 20% biodiesel
meeting ASTM specification D-7467.
285

MOPAR ACCESSORIES
Authentic Accessories By Mopar
• In choosing Authentic Accessories you gainfar more than expressive style, premium
protection, or extreme entertainment, you
also benefit from enhancing your vehicle
with accessories that have been thoroughly
tested and factory-approved. • The following highlights just some of the
many Authentic Ram Accessories by Mopar
featuring a fit, finish, and functionality spe-
cifically for your Ram.
• For the full line of Authentic Ram Accesso- ries by Mopar, visit your local dealership or
online at mopar.com for U.S. residents and
mopar.ca for Canadian residents. NOTE:
All parts are subject to availability.
CHROME:
• Body Side Molding
• Tubular Side Steps• Fuel Filler Door
• Cast Aluminum Wheels • Front Air Deflector• Grille
EXTERIOR:
• Bedliners • Running Boards• Bed Mat & Bed Rug
• Fiberglass Tonneau Cover • Bed Extender• Tool Box
• Roll-up Tonneau Cover • Bed Step• Sport Performance Hood
• Folding Tonneau Cover • Hitch Receiver• Hitches
• Molded Splash Guards
INTERIOR:
• Premium Carpet Mats • Door Sill Guards• Slush Mats
• Leather Seats • In-Floor Storage Locks
287