technical specifications Ram 3500 2018 Owner's Guide

WARNING!(Continued)
materials lit or products that can cause spark in or near
the vehicle when removing the fuel filler tube cap (gas
cap) or filling the tank. Do not use E-85 as a cleaning
agent and never use it near an open flame.
Fuel Requirements
If your vehicle is E-85 compatible, it will operate on
unleaded gasoline with any octane rating, or solely E-85
fuel, or any mixture of these fuels.
For best results, avoid fueling patterns alternating be-
tween E-85 and unleaded gasoline.
When switching fuel types:
•Add 5 gallons (19 liters) or more when refueling.
• Drive the vehicle immediately after refueling for at least
5 miles (8 km).
Observing these precautions will avoid possible hard start-
ing and/or driveability problems during warm up. NOTE:
•
Use seasonally adjusted E-85 fuel (ASTM D5798). With
non-seasonally adjusted E-85 fuel, hard starting and
rough idle following start up may be experienced even if
the above recommendations are followed, especially
when the ambient temperature is below 32°F (0°C).
• Some additives used in regular gasoline are not fully
compatible with E-85 and may form deposits in your
engine. To eliminate driveability issues that may be
caused by these deposits, a supplemental gasoline addi-
tive, such as Mopar Injector Cleanup or Techron may be
used.
Selection Of Engine Oil For Flexible Fuel Vehicles
(E-85) And Gasoline Vehicles
FFV vehicles operated on E-85 require specially formulated
engine oils. These special requirements are included in
Mopar engine oils, and in equivalent oils meeting FCA US
Material Standard MS-6395. It is recommended that engine
oils that are API Certified and meet the requirements of
Material Standard MS-6395 be used. MS-6395 contains
additional requirements, developed during extensive fleet
testing, to provide additional protection to FCA US LLC
engines.
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TECHNICAL SPECIFICATIONS 601

Starting
The characteristics of E-85 fuel make it unsuitable for use
when ambient temperatures fall below 0°F (-18°C). In the
range of 0°F (-18°C) to 32°F (0°C), an increase in the time it
takes for your engine to start may be experienced, and a
deterioration in driveability (sags and/or hesitations) until
the engine is fully warmed up. These issues may be
improved with the use of seasonally adjusted E-85 fuel.
NOTE:Use of the engine block heater (if equipped) may
improve engine start time when using E-85 fuel when the
ambient temperature is less than 32°F (0°C).
Cruising Range
Because E-85 fuel contains less energy per gallon/liter than
gasoline, an increase in fuel consumption will be experi-
enced. The miles per gallon (mpg)/kilometers per liter and
the driving range will decrease by approximately 30%,
compared to gasoline operation.
Replacement Parts
All fuel and engine components in your Flexible Fuel
Vehicle (FFV) are designed to be compatible with ethanol.
Ethanol compatible service components are required.
CAUTION!
Replacing fuel system components with non-ethanol
compatible components can damage your vehicle.
Maintenance
CAUTION!
Do not use ethanol mixture greater than 85% in your
vehicle. It will cause difficulty in cold starting and may
affect drivability.
602 TECHNICAL SPECIFICATIONS

FLUID CAPACITIES
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 requirements 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 Mate-
rial 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 re-
quirements of FCA Material Standard MS.90032.) 18.3 Quarts
17.3 Liters
9
TECHNICAL SPECIFICATIONS 603

U.S.Metric
5.7L Engine – 2500/3500 Models (We recommend you use Mopar
Antifreeze/Coolant 10 Year/150,000 Mile Formula that meets the re-
quirements 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 re-
quirements of FCA Material Standard MS.90032.) 16.6 Quarts
15.7 Liters
FLUIDS AND LUBRICANTS
Engine
Component Fluid, Lubricant, or Genuine Part
Engine Coolant We recommend you use Mopar Antifreeze/Coolant 10
Year/150,000 Mile Formula OAT (Organic Additive Tech-
nology).
Engine Oil – 3.6L Engine We recommend you use API Certified SAE 5W-20 Engine
Oil, meeting the requirements of FCA Material Standard
MS-6395 such as Mopar, Pennzoil, and Shell Helix. Refer to
your engine oil filler cap for correct SAE grade.
Mopar SAE 5W-30 engine oil approved to FCA Material
Standard MS-6395 may be used when SAE 5W-20 engine
oil meeting MS-6395 is not available.
604 TECHNICAL SPECIFICATIONS

ComponentFluid, Lubricant, or Genuine Part
Engine Oil – 5.7L Engine We recommend you use API Certified SAE 5W-20 Engine
Oil, meeting the requirements of FCA Material Standard
MS-6395 such as Mopar, Pennzoil, and Shell Helix. Refer to
your engine oil filler cap for correct SAE grade.
Engine Oil – 6.4L For best performance and maximum protection under all
types of operating conditions, the manufacturer only rec-
ommends full synthetic engine oils that meet the American
Petroleum Institute (API) categories of SN. The manufac-
turer 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.
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TECHNICAL SPECIFICATIONS 605

CAUTION!
•Mixing of engine coolant (antifreeze) other than
specified Organic Additive Technology (OAT) en-
gine coolant (antifreeze), may result in engine dam-
age and may decrease corrosion protection. Organic
Additive Technology (OAT) engine coolant is differ-
ent and should not be mixed with Hybrid Organic
Additive Technology (HOAT) engine coolant (anti-
freeze) or any “globally compatible” coolant (anti-
freeze). If a non-OAT engine 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 coolant (conforming
to MS.90032), by an authorized dealer as soon as
possible.
(Continued)
CAUTION! (Continued)
•Do not use water alone or alcohol-based engine
coolant (antifreeze) products. Do not use additional
rust inhibitors or antirust products, as they may not
be compatible 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 (anti-
freeze) is not recommended.
606 TECHNICAL SPECIFICATIONS

Chassis
ComponentFluid, Lubricant, or Genuine Part
Automatic Transmission – Eight-Speed Automatic Use only Mopar ZF 8&9 Speed ATF Automatic Transmis- sion Fluid, or equivalent. Failure to use the correct fluid
may affect the function or performance of your transmis-
sion.
Automatic Transmission – Six-Speed Automatic with Gaso-
line Engine (For Diesel Engine see Diesel Supplement) Use only ATF+4 Automatic Transmission Fluid. Failure to
use ATF+4 fluid may affect the function or performance of
your transmission. We recommend Mopar ATF+4 fluid.
Transfer Case We recommend you use Mopar BW44–44 Transfer Case
Fluid.
Front Axle – 1500 Four-Wheel Drive Models We recommend you use Mopar GL-5 Synthetic Axle Lubri-
cant SAE 75W-85.
Rear Axle – 1500 Models We recommend you use Mopar Synthetic Gear Lubricant
SAE 75W-140 (MS-8985). Limited-Slip Rear Axles require
the addition of 5 oz. (148 ml) Mopar Limited Slip Additive
(MS-10111).
9
TECHNICAL SPECIFICATIONS 607

ComponentFluid, Lubricant, or Genuine Part
Front and Rear Axle – 2500/3500 Models We recommend you use SAE 75W-85 HD Ram GL-5
Synthetic Axle Lubricant. Limited slip additive is not
required for Limited-Slip Rear Axles.
Brake Master Cylinder We recommend you use Mopar DOT 3. If DOT 3 brake
fluid is not available, then DOT 4 is acceptable.
Power Steering Reservoir – 2500/3500 Models We recommend you use Mopar Power Steering Fluid +4 or
Mopar ATF+4 Automatic Transmission Fluid.
608 TECHNICAL SPECIFICATIONS