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Ram 2500 · Model year 2018

2018 Ram 2500 specs, maintenance & manuals

Owner and shopper reference for the 2018 Ram 2500, built from Stellantis and Mopar data: the factory spec sheet, the maintenance schedule, fluid capacities and 18 manufacturer publications.

Horsepower
350–410 hp
Recalls
10
Schedule covers
150k miles
Publications
18
2500 towing capacity by yearTow ratings for every year we have charts for; the 2018 spec sheet's towing figures are in Specs & features below.See the towing chart

What changed for the 2018 Ram 2500

The 2018 2500 versus 2017: what's different, from the factory charts and spec sheets.

All the differences we found

Newly standard

  • Rearview auto-dimming with video display — SLT
  • Rearview auto-dimming with video display — Tradesman
  • Shocks: Front, performance tuned 2500 only — Laramie Longhorn, Limited
  • Shocks: Rear, performance tuned 2500 only — Laramie Longhorn, Limited

Newly available

  • Black premium projector headlamps / premium black LED tail lamps — Limited
  • Power / heated / puddle / turn / memory/ power fold — Big Horn/Lone Star
  • Power / heated / puddle / turn / power fold — SLT, Big Horn/Lone Star
  • Power folding / heated / puddle / turn / auto-dim — SLT, Big Horn/Lone Star
  • Chrome surround with chrome wave-perf inserts — Big Horn/Lone Star, Laramie Longhorn

No longer offered on some trims

  • Power folding / heated / puddle / turn / auto-dim / memory — SLT, Big Horn/Lone Star
  • Bumpers: Chrome — Power Wagon
  • Shocks: Front, heavy-duty — Laramie Longhorn, Limited
  • Shocks: Rear, heavy-duty — Laramie Longhorn, Limited

Listed for the first time on the equipment chart

  • Cargo-view camera — optional: SLT, Big Horn/Lone Star, Power Wagon, Laramie, Laramie Longhorn, Limited
  • ParkSense — optional: Tradesman, SLT, Big Horn/Lone Star, Power Wagon
  • Power-adjustable with memory; included with Leather and Luxury Group — standard: Laramie Longhorn, Limited — optional: Power Wagon, Laramie
  • Remote Keyless Enter 'n Go — standard: Limited — optional: Power Wagon, Laramie, Laramie Longhorn
  • Skid plates: Fuel tank 2500 only — standard: Power Wagon — optional: Tradesman
  • Uconnect 3.0 with 5-in. display AM/FM/SAT/Bluetooth — standard: SLT, Big Horn/Lone Star, Power Wagon — optional: Tradesman
  • 20 x 8-in. six-spoke aluminum painted satin carbon with silver inserts — optional: Limited
  • 20 x 8-in. six-spoke aluminum painted satin carbon with silver inserts — optional: Limited
  • 2500 — optional: Tradesman, SLT, Big Horn/Lone Star, Power Wagon, Laramie, Laramie Longhorn, Limited
  • 3500 SRW/DRW — optional: Tradesman, SLT, Big Horn/Lone Star, Laramie, Laramie Longhorn, Limited
  • Cluster: 3.5-in., DID — optional: Tradesman, SLT
  • Cluster: 7-in. DID — standard: Laramie Longhorn
  • Cluster: 7-in., DID — optional: Power Wagon
  • Grille: Black with R-A-M logo — standard: Power Wagon
  • Grille: Body-color with R-A-M logo — optional: Big Horn/Lone Star, Laramie
  • Grille: Chrome with R-A-M logo — standard: Laramie Longhorn, Limited
  • Grille: Platinum chrome with R-A-M logo — optional: Limited
  • Running boards: Body color — optional: Big Horn/Lone Star, Laramie, Limited
  • Sentry Key — engine immobilizer — standard: Tradesman, SLT, Big Horn/Lone Star, Power Wagon, Laramie, Laramie Longhorn, Limited
  • Side steps: Black, cab-length — optional: Tradesman, SLT, Big Horn/Lone Star, Power Wagon, Laramie
  • SiriusXM Guardian — included with 8.4-in. radios — optional: SLT, Big Horn/Lone Star, Power Wagon, Laramie, Laramie Longhorn, Limited

No longer on the equipment chart

  • CargoView Camera
  • Door Locks: Keyless Enter ’n Go
  • Mirrors: Power-heated, puddle, turn
  • ParkSense front and rear park assist
  • ParkSense rear park assist
  • Radios: Uconnect 5.0 AM/FM/SAT/Bluetooth
  • Black, cab-length; restricted by vehicle color on select models
  • Chrome limited grille
  • Chrome surround with chrome wave-mesh inserts
  • Chrome, wheel-to-wheel; not available on Regular Cab or DRW
  • Cluster: 3.5-in. driver information display
  • Cluster: 7-in. driver information display
  • Cluster: 7-in. driver information display
  • Door Handles: Black
  • Door Handles: Body color
  • Door Handles: Chrome with body-color bezel
  • Fuel Tanks: Fuel tank 2500 only
  • Grille: Black with Ram lettering
  • Key Alike
  • Pedals: Power-adjustable with memory
  • Sentry Key theft deterrent system — engine immobilizer
  • Suspension: Bilstein monotube shocks

Compared automatically from the manufacturer's trim feature charts, specification sheets, towing guides and the EPA's fuel-economy data for 2017 and 2018. Equipment varies by trim and market; confirm details on a specific vehicle.

2018 Ram 2500 specs & features

Engines, gear ratios, suspension, brakes, dimensions and capacities as published in the manufacturer's 2018 specification sheet.

General information3 specs
Vehicle Type
Regular Cab, Crew Cab and Mega Cab, 2WD, 4WD
Assembly Plant
Saltillo Truck Assembly Plant, Coahuila, Mexico
EPA Vehicle Class
Standard Pickup
Body/chassis2 specs
2WD4WD
LayoutLongitudinal, front engineLongitudinal, front engine, transfer case
ConstructionLadder-type frame, steel cab, double-wall steel pickup boxLadder-type frame, steel cab, double-wall steel pickup box
Engines44 specs
5.7-liter HEMI V-8
Type and Description90-degree V-type, liquid-cooled, with variable-valve timing (VVT)
Displacement345 cu. in. (5,654 cu. cm)
Bore x Stroke3.92 x 3.58 (99.5 x 90.9)
Valve SystemPushrod-operated overhead valves, 16 valves, hydraulic lifters with roller followers
Fuel InjectionSequential, multiport, electronic, returnless
ConstructionDeep-skirt cast-iron block with cross-bolted main bearing caps, aluminum alloy heads with hemispherical combustion chambers
Compression Ratio10.5:1
Power383 hp (286 kW) @ 5,600 rpm
Torque400 lb.-ft. (542 N•m) @ 4,000 rpm
Maximum Engine Speed5,800 rpm
Fuel RequirementUnleaded mid-grade, 89 octane (R+M)/2 — recommended; Unleaded regular, 87 octane (R+M)/2 — acceptable; Compressed Natural Gas — optional
Oil Capacity7.0 quarts (6.6 liters)
Coolant Capacity18.3 quarts (17.30 liters)
Emission ControlThree-way catalytic converters, heated oxygen sensors, internal engine features and knock sensors
6.4-liter HEMI V-8
Type and Description90-degree V-type, liquid-cooled, with variable-valve timing (VVT)
Displacement392 cu. in. (6,417 cu. cm)
Bore x Stroke4.09 x 3.72 (103.9 x 94.6)
Valve SystemPushrod-operated overhead valves, 16 valves, eight de-activating and eight hydraulic lifters, all with roller followers
Fuel InjectionSequential, multiport, electronic, returnless
ConstructionDeep-skirt cast-iron block with cross-bolted main bearing caps, 356 aluminum cylinder heads with hemispherical combustion chambers
Compression Ratio10.0:1
Power410 hp (306 kW) @ 5,600 rpm
Torque429 lb.-ft. (582 N•m) at 4,000 rpm
Maximum Engine Speed5,800 rpm limited
Fuel RequirementUnleaded regular, 87 octane (R+M)/2
Oil Capacity7.0 quarts (6.6 liters)
Coolant Capacity16.6 quarts (15.75 liters)
Emission ControlThree-way catalytic converters, heated oxygen sensors, cooled electronic exhaust-gas recirculation (EGR) and individual cylinder fuel control
6.7-liter Cummins turbo diesel I-6 (two versions)
Type and DescriptionInline, liquid-cooled, turbocharged, intercooled
Displacement408 cu. in. (6,690 cu. cm)
Bore x Stroke4.21 x 4.88 (107 x 124)
Valve SystemPushrod-operated overhead valves, 24 valves, solid lifters
Fuel InjectionElectronic high-pressure common rail
ConstructionCast-iron block and head
Compression Ratio16.2:1
Power350 hp (261 kW) @ 2,800 rpm (G56 manual transmission)
Torque (Manual)660 lb.-ft. (881 N•m) @ 1,400 rpm
Power370 hp (276 kW) @ 2,800 rpm (68RFE automatic transmission)
Torque (Automatic)800 lb.-ft. (1,084 N•m) @ 1,600 rpm
Maximum High-idle Engine Speed3,200 rpm
Fuel RequirementUltra-low sulfur diesel
Oil Capacity12.0 quarts (11.3 liters) with filter
Coolant Capacity23.8 quarts (22.50 liters)
Emission ControlsSelective Catalytic Reduction (SCR)
Transmission10 specs
G56 — manual six-speed overdrive66RFE — automatic six-speed68RFE — automatic six-speed
Availability6.7-liter diesel5.7-liter HEMI V-8 and 6.4-liter HEMI V-86.7-liter diesel
DescriptionSynchronized in all gearsThree planetary gear sets, one overrunning clutch, full electronic control, electronically controlled converter clutchThree planetary gear-sets, one overrunning clutch, full electronic control, electronically controlled converter clutch
1st5.943.233.23
2nd3.281.841.84
3rd1.981.411.41
4th1.311.001.0
5th1.00.820.82
6th0.740.630.63
Reverse5.424.444.44
Axle ratios3.423.73 and 4.103.42
Transfer casesBW 44-46, BW 44-47Transfer cases: BW 44-46, BW 44-475 specs
Availability
Optional on 6.7-liter diesel, 6.4-liter HEMI V-8 and 5.7-liter HEMI V-8
Type
Part-time – BW 44-47 manual shift and BW 44-46 electric shift
Operating Modes
2WD; 4WD High; Neutral; 4WD Low
Low-range Ratio
2.64
Center Differential
None
Axles2 specs
Front (4x4)
AAM 9.25-in. beam front axle with center disconnect (locking differentials on Power Wagon)
Rear
AAM 11.5-in. beam rear axle (locking differentials on Power Wagon)
Electrical system6 specs
Alternator: Rating
160-amp standard with 5.7-liter HEMI V-8
Alternator: Rating
180-amp included with 6.4-liter HEMI V-8 and 6.7-liter diesel, optional on 5.7-liter HEMI V-8
Alternator: Rating
Dual (220 and 160) optional on 6.4-liter HEMI V-8
Alternator: Rating
Dual 220-amp optional on 6.7-liter diesel
Battery: Description
Group 65, maintenance-free, 730 CCA on 5.7-liter HEMI V-8 and 6.4-liter HEMI V-8
Battery: Description
Dual Group 65, maintenance-free, 730 CCA on 6.7-liter diesel
Suspension2 specs
2WD4WD
FrontThree-link with track bar, coil springs, stabilizer bar, solid axleThree-link with track bar, coil springs, stabilizer bar, solid axle, disconnecting sway bar (Power Wagon only)
RearFive-link with track bar, coil springs, stabilizer bar, solid axleFive-link with track bar, coil springs, stabilizer bar, solid axle (optional air bags)
Brakes4 specs
Front: Size and Type
14.17 x 1.54. (359.9 x 39.1) disc with twin-piston pin-slider caliper and ABS
Rear: Size and Type
14.09 x 1.34 (357.9 x 34.0) disc with twin-piston pin-slider caliper and ABS
Power-assist type
Dual-rate, tandem diaphragm vacuum (gas)
Power-assist type
Hydro-boost (diesel)
Air bags3 specs
Regular Cab
6
Crew Cab
6
Mega Cab
6
Steering1 spec
Power-assist
Hydraulic assist
SteeringRegular Cab pickupSteering: Regular Cab pickup3 specs
2WD4WD
Box Length8-ft.8-ft.
Wheelbase (nominal)140.5 (3,568.7)140.0 (3,556.0)
Turning Diameter – ft. (m)(a)45.1 (13.7)41.6 (12.7)

(a) Turning diameter is measured at the outside of the tires at curb height; it and steering wheel turns, lock-to-lock, may differ with optional tires and wheels.

SteeringCrew Cab pickupSteering: Crew Cab pickup3 specs
2WD2WD4WD4WD
Box Length6-ft. 4-in.8-ft.6-ft. 4in.8-ft.
Wheelbase (nominal)149.4 (3,794.8)169.4 (4,302.8)148.9 (3,782.1)168.9 (4,290.1)
Turning Diameter – ft. (m)(a)47.5 (14.5)53.2 (16.2)43.9 (13.4)49.2 (15.0)

(a) Turning diameter is measured at the outside of the tires at curb height; it and steering wheel turns, lock-to-lock, may differ with optional tires and wheels.

SteeringMega Cab pickupSteering: Mega Cab pickup3 specs
2WD4WD
Box Length6-ft. 4-in.6-ft. 4-in.
Wheelbase (nominal)160.5 (4,076.7)160.0 (4,064.0)
Turning Diameter – ft. (m)(a)50.67 (15.4)46.86 (14.3)

(a) Turning diameter is measured at the outside of the tires at curb height; it and steering wheel turns, lock-to-lock, may differ with optional tires and wheels.

Cargo box7 specs
6-ft. 4-in.8-ft.
Nominal Box Size(Regular, Crew or Mega)(Regular, Crew)
SAE volume, cu. ft. (cu. m)57.5 (1.6)74.7 (2.1)
Length at Floor, Tailgate Closed76.3 (1,938.5)98.3 (2,496.5)
Cargo Width66.4 (1,686.9)66.4 (1,686.9)
Distance Between Wheelhouses51 (1,295.4)51 (1,295.4)
Depth20.1 (511.1)20.2 (513.0)
Tailgate Opening Width60.4 (1,535.3)60.4 (1,535.3)

Dimensions are in inches (millimeters) unless noted.

Dimensions44 specs
4x24x4
Regular Cab 140.5-in. WB, 8-ft. box SRW
Wheelbase140.5 (3,568.7)140.5 (3,568.7)
Track Width – Front68.6 (1,742.4)68.3 (1,734.8)
Track Width – Rear68.2 (1,732.3)68.2 (1,732.3)
Overall Length231.0 (5,867.4)231.0 (5,867.4)
Overall Width @ SgRP Front78.9 (2,004.1)78.9 (2,004.1)
Overall Height73.3 (1,861.8)75.7 (1,922.8)
Suspension or Axle to Ground – Front7.6 (193.0)7.5 (190.5)
Suspension or Axle to Ground – Rear7.4 (188.0)7.4 (188.0)
Approach Angle (degrees)13.223.0
Ramp Breakover Angle (degrees)16.516.9
Departure Angle (degrees)18.121.6
Crew Cab 149.5-in. WB, 6-ft. 4-in. box SRW
Wheelbase149.5 (3,797.3)149.5 (3,797.3)
Track Width – Front68.6 (1,742.4)68.3 (1,734.8)
Track Width – Rear68.2 (1,732.3)68.2 (1,732.3)
Overall Length237.4 (6,029.9)237.4 (6,029.9)
Overall Width @ SgRP Front79.1 (2,009.1)79.1 (2,009.1)
Overall Height73.7 (1,871.9)77.7 (1,973.6)
Suspension or Axle to Ground – Front7.1 (180.3)7.4 (188.0)
Suspension or Axle to Ground – Rear7.3 (185.4)7.1 (180.3)
Approach Angle (degrees)13.421.8
Ramp Breakover Angle (degrees)15.118.2
Departure Angle (degrees)18.822.3
Crew Cab 169.5-in. WB, 8-ft. box SRW
Wheelbase169.4 (4,302.7)168.9 (4,290.1)
Track Width – Front68.6 (1,742.4)68.3 (1,734.8)
Track Width – Rear68.2 (1,732.3)68.2 (1,732.3)
Overall Length259.4 (6,588.8)259.4 (6,588.8)
Overall Width @ SgRP Front79.1 (2,009.1)79.1 (2,009.1)
Overall Height73.5 (1,866.9)77.6 (1,971)
Suspension or Axle to Ground – Front7.1 (180.3)7.3 (185.4)
Suspension or Axle to Ground – Rear7.3 (185.4)7.2 (182.9)
Approach Angle (degrees)13.421.7
Ramp Breakover Angle (degrees)14.116.5
Departure Angle (degrees)18.021.4
Mega Cab 160.5-in. WB, 6-ft. 4-in. box SRW
Wheelbase160.5 (4,076.7)160.0 (4,064)
Track Width – Front68.6 (1,742.4)68.3 (1,734.8)
Track Width – Rear68.2 (1,732.3)68.2 (1,732.3)
Overall Length248.4 (6,309.4)248.4 (6,309.4)
Overall Width @ SgRP Front79.1 (2,009.1)79.1 (2,009.1)
Overall Height74.1 (1,882.1)78.3 (1,988.8)
Suspension or Axle to Ground – Front7.8 (198.1)8.1 (205.7)
Suspension or Axle to Ground – Rear7.8 (198.1)7.7 (195.6)
Approach Angle (degrees)14.023.9
Ramp Breakover Angle (degrees)15.818.3
Departure Angle (degrees)19.123.0
Accommodations13 specs
Regular CabCrew CabMega Cab
Seating Capacity, F/R3/0 or 2/03/3 or 2/33/3 or 2/3
Front: Headroom39.9 (1,013.5)41.0 (1,040.5)41.0 (1,040.5)
Front: Legroom41 (1,041.4)41 (1,041.4)41 (1,041.4)
Front: Shoulder Room66 (1,676.4)66 (1,676.4)66 (1,676.4)
Front: Hip Room62.9 (1,598.7)63.2 (1,605.3)63.2 (1,605.3)
Front: Seat Travel9.0 (230.0)9.0 (230.0)9.0 (230.0)
Front: Recliner Range (degrees)85 (38 RWD, 47 FWD)56 (38 RWD, 18 FWD)56 (38 RWD, 18 FWD)
Rear: Headroom—39.9 (1,013.5)40.3 (1,023.6)
Rear: Legroom—40.3 (1,023.6)43.3 (1,099.5)
Rear: Shoulder Room—65.7 (1,668.8)65.7 (1,668.8)
Rear: Hip Room—63.2 (1,605.3)63.2 (1,605.3)
Interior Volume: Front – cu. ft. (cu. m)62.5 (1.8)64.2 (1.8)64.2 (1.8)
Interior Volume: Rear – cu. ft. (cu. m)—61.1 (1.7)66.3 (1.9)

— not listed or not applicable

Source: 2018 Ram 2500 HD Specifications (Stellantis media site).

No EPA fuel-economy rating. Heavy-duty pickups, chassis cabs and full-size vans above 8,500 lb gross vehicle weight are exempt from EPA labeling, so there is no official MPG figure for the 2500.

2018 Ram 2500 wheels & tires

The spec sheet doesn't list tire sizes for this model year; here is what the owner's manual says.

Cold tire pressure
Not a single number: the owner's manual refers to the tire and loading placard, which lists the pressures for your exact tire size and load.
Spare
The manual covers a compact spare, a non-matching full-size spare or a tire service kit in place of a spare, depending on equipment; neither spare type has a pressure sensor.
Lug nut torque
130 ft-lb (176 N·m) (Cone type), M14 x 1.50 thread, 22 mm socket
Pressure monitor
A tire pressure monitoring system warns when a tire is low.

Sizes and pressures vary by trim, wheel package and load: check the placard on your vehicle and the tire sidewall. Sizes from the manufacturer's specification sheet (2018 Ram 2500 HD Specifications). Pressure and spare notes from the owner's manual.

2018 Ram 2500 maintenance schedule

The factory schedule for normal driving. Oil changes follow the oil-change indicator on most models; severe use (towing, dusty roads, lots of idling) shortens some intervals.

Schedule

A dot means the service is due at that mileage.

Additional Inspections

  • Inspect front suspension, tie rod ends, and replace if necessary
  • 2500/3500 Models:Inspect the front and rear axle surfacesIf gear oil leakage is suspected, check the fluid level. If using your vehicle for police, taxi, fleet, off-road or frequent trailer towing, change axle fluid.
  • Inspect the brake linings, replace as necessary
  • Adjust parking brake as necessary

Additional Maintenance

  • Replace cabin air filter
Service20k30k40k50k60k70k80k90k100k110k120k130k140k150k
Additional Inspections
Inspect the CV/Universal joints
Inspect front suspension, tie rod ends, and replace if necessary
1500 Models:Inspect the front and rear axle surfacesIf gear oil leakage is suspected, check the fluid level. If using your vehicle for police, taxi, fleet, off-road or frequent trailer towing, change axle fluid.
2500/3500 Models:Inspect the front and rear axle surfacesIf gear oil leakage is suspected, check the fluid level. If using your vehicle for police, taxi, fleet, off-road or frequent trailer towing, change axle fluid.
Inspect the brake linings, replace as necessary
Adjust parking brake as necessary
Inspect transfer case fluid
Additional Maintenance
Replace cabin air filter
Replace engine air filter
Replace spark plugs
Flush and replace the engine coolant at 10 years or 150,000 miles (240,000 km) whichever comes first
Change automatic transmission fluid and filter(s) (six-speed automatic only), if using your vehicle for police, taxi, fleet, or frequent trailer towing
Change automatic transmission fluid and filter(s) (six-speed automatic only)
Inspect the transfer case fluid, change for any of the following: police, taxi, fleet, or frequent trailer towing
Change the transfer case fluid
Inspect and replace PCV valve if necessary

At every oil change

  • Change oil and filter
  • Rotate the tires. Rotate at the first sign of irregular wear, even if it occurs before the oil indicator system turns on
  • Inspect battery and clean and tighten terminals as required
  • Inspect automatic transmission fluid if equipped with dipstick
  • Inspect brake pads, shoes, rotors, drums, hoses and park brake
  • Inspect engine cooling system protection and hoses
  • Inspect exhaust system
  • Inspect engine air cleaner if using in dusty or off-road conditions
  • Lube the front drive shaft fitting (2500/3500 (4x4) models only)
Compare with another year

2018 Ram 2500 fluids & capacities

Oil, coolant, transmission and axle fluids with their capacities and specifications, wheel torque and fuel requirements, from the owner's manual.

Fluid capacities

SystemApplies toCapacity
All engines
Fuel tank (approximate)2500/3500 shortbed models31 gal117 L
2500/3500 longbed models32 gal121 L
5.7L engine
Engine oil with filterS7 qt6.6 L
Cooling system- 2500/3500 models18.3 qt17.3 L
6.4L engine
Engine oil with filterS7 qt6.6 L
Cooling system- 2500/3500 models16.6 qt15.7 L
6.7L diesel engine
Fuel tank (approximate)2500/3500 standard cab longbed models28 gal106 L
2500/3500 crew/Mega Cab shortbed models31 gal129 L
2500/3500 crew cab longbed models32 gal132 L
Standard rear tank - Chassis Cab only52 gal197 L
Optional midship tank - Chassis Cab only22 gal83 L
Engine oil with filterCummins turbo diesel engine12 qt11.4 L
Cooling systemCummins turbo diesel engine (Mopar 10 Year/150,000 Mile coolant)5.7 gal21.4 L
Diesel exhaust fluid tank (approximate)2500/3500 models5.5 gal21 L
Chassis Cab9 gal34 L

Engine fluids

ComponentFluid / gradeMopar product
All engines
Engine coolant
OAT (Organic Additive Technology) 10-year/150,000-mile coolantMS.90032
Mopar Antifreeze/Coolant 10 Year/150,000 Mile Formula
Engine oil filter
Mopar brand filter
—
Spark plugs
Mopar spark plugs
—
5.7L engine
Engine oil
API Certified SAE 5W-20MS-6395
Mopar, Pennzoil or Shell Helix (examples); SAE 5W-30 to MS-6395 may be used if 5W-20 is unavailable
6.4L engine
Engine oil
SAE 0W-40 full synthetic, API SNMS-12633
Pennzoil Ultra 0W-40 or equivalent Mopar oil
6.7L diesel engine
Engine coolantCummins turbo diesel engine
OAT (Organic Additive Technology) 10-year/150,000-mile coolant
Mopar Antifreeze/Coolant 10 Year/150,000 Mile Formula
Engine oilCummins turbo diesel engine, ambient above 0°F (-18°C)
SAE 15W-40, API CJ-4 (Cummins CES 20081 oils also acceptable)MS-10902
Mopar, Shell Rotella or Shell Rimula (examples)
Engine oilCummins turbo diesel engine, ambient below 0°F (-18°C)
SAE 5W-40 synthetic, API CJ-4MS-10902
Mopar, Shell Rotella or Shell Rimula (examples)
Engine oil filterCummins turbo diesel engine
Mopar brand filter
—
Fuel filterCummins turbo diesel engine
Mopar fuel filter, 3 micron rating with water separation
Mopar Fuel Filter
Crankcase ventilation filterCummins turbo diesel engine
Mopar CCV filter
Mopar CCV Filter
Diesel fuelCummins turbo diesel engine
Ultra-low-sulfur highway diesel (15 ppm sulfur max), No. 2 ASTM D-975 Grade S15; biodiesel up to B5 (D-975), B20 (ASTM D-7467) on pickups and B20-equipped Chassis CabASTM D-975 S15
Mopar Premium Diesel Fuel Treatment recommended below 20°F (-6°C) to avoid gelling
Diesel exhaust fluid (DEF)Cummins turbo diesel engine
DEF API certified to ISO 22241
Mopar Diesel Exhaust Fluid (API Certified)

Chassis fluids & lubricants

ComponentFluid / gradeMopar product
Automatic transmissionEight-speed automatic
ZF 8&9 Speed ATF or equivalent
Mopar ZF 8&9 Speed ATF
Automatic transmissionSix-speed automatic, gasoline engine
ATF+4
Mopar ATF+4
Transfer case
BW44-44 transfer case fluid
Mopar BW44-44 Transfer Case Fluid
Front and rear axle2500/3500 models
SAE 75W-85 HD GL-5 synthetic axle lubricant
Ram GL-5 Synthetic Axle Lubricant SAE 75W-85 HD
Brake master cylinder
DOT 3 (DOT 4 acceptable if DOT 3 is unavailable)
Mopar DOT 3
Power steering reservoir2500/3500 models
Power Steering Fluid +4 or ATF+4
Mopar Power Steering Fluid +4 or Mopar ATF+4
Automatic transmission6.7L diesel, six-speed 68RFE (2500/3500 pickups without PTO)
ATF+4
Mopar ATF+4
Automatic transmission6.7L diesel, six-speed AS69RC (pickups with PTO and all Chassis Cab)
Mopar ASRC automatic transmission fluid or equivalent
Mopar ASRC ATF
Front and rear axle4500/5500 Chassis Cab
GL-5 SAE 75W-90 synthetic axle lubricantMS-9763
—
Manual transmissionG-56 (if equipped, 6.7L diesel)
ATF+4 or licensed ATF+4 equivalent
Mopar ATF+4
Clutch linkage6.7L diesel manual
NLGI Grade 2 EP multi-purpose grease
Mopar Multi-Purpose Grease

Fuel

EngineMinimumEthanol / biodiesel
5.7L engine
87 octane Regular unleaded (89 for optimum performance and fuel economy)
Up to 15% (E15)
6.4L engine
87 octane Regular unleaded (89 for optimum performance and fuel economy)
Up to 15% (E15)
6.7L Cummins turbo diesel
Ultra-low-sulfur diesel
Up to B5 (ASTM D-975); up to B20 (ASTM D-7467) on pickups and Chassis Cab with optional B20 capability

Wheel lug nut torque

WheelsTorque
Cone typeThread M14 x 1.5022 mm socket130 ft‑lb (176 N·m)
Flanged typeThread M14 x 1.5022 mm socket129 ft‑lb (175 N·m)
  • Dual (dually) wheels use a two-piece lug nut; clean the nut-to-washer interface and do not oil the studs.
  • Re-check lug torque after 25 miles (40 km).
  • Tighten lug nuts in a star pattern, twice around.
  • Use a hex deep-wall socket and a calibrated torque wrench.
  • 6.7L Cummins diesel rows come from the separate Diesel Supplement (PDF _raw/research/diesel/ram-2500-2018.pdf).

Source: Owner's manual (PDF). Always confirm with the manual for your exact vehicle.

2018 Ram 2500 recalls & safety

What the U.S. government's National Highway Traffic Safety Administration (NHTSA) has on file for the 2018 Ram 2500: 10 recall campaigns, 2,609 owner complaints and crash-test ratings. Fetched November 8, 2026.

NHTSA 5-Star Safety Ratings

VersionOverallFrontalSideRollover
Ram 2500 Crew PU/CC 2WD
15.5% risk
Ram 2500 Crew PU/CC 4WD
23.7% risk

Stars compare vehicles of similar weight; rollover shows the tested chance of a rollover in a single-vehicle crash.

Recalls (10)

Newest first. A campaign covers certain vehicles of this model year, not necessarily every one. To see which apply to a specific vehicle, and whether the fix has been done, enter its VIN at nhtsa.gov/recalls or ask a dealer; repairs are free of charge.

Air bags: side/window: curtain: inflatorSeptember 11, 2025 · Campaign 25V592000

Chrysler (FCA US, LLC) is recalling certain 2018 Ram 1500, Ram 2500, and Ram 3500 vehicles. The right and left side curtain air bag inflators may rupture due to a manufacturing defect.

Risk: An inflator rupture may result in sharp metal fragments striking occupants, resulting in injury.

Fix: Dealers will replace one or both side curtain air bags, as necessary, free of charge. Owner notification letters were mailed September 25, 2025. Owners may contact FCA customer service at 1-800-853-1403. FCA's numbers for this recall are 83C, 91C, and 92C.

Campaign 25V592000 on NHTSA.gov
Air bags: side/window: curtain: inflatorJanuary 16, 2025 · Campaign 25V010000

Chrysler (FCA US, LLC) is recalling certain 2016-2019 Ram 3500, Ram 1500, 2016-2020 Ram 2500, and 2016 Ram 3500 Cab Chassis vehicles. The right and left side curtain air bag inflators may rupture due to a manufacturing defect.

Risk: An inflator rupture may result in sharp metal fragments striking occupants, resulting in injury.

Fix: Dealers will replace one or both side curtain air bags, as necessary, free of charge. Owner notification letters were mailed February 13, 2025. Owners may contact FCA customer service at 1-800-853-1403. FCA's numbers for this recall are 05C, 09C, and 10C.

Campaign 25V010000 on NHTSA.gov
Service brakes, hydraulic: antilock/traction control/electronic limited slip: control unit/moduleNovember 27, 2024 · Campaign 24V896000

Chrysler (FCA US, LLC) is recalling certain 2017-2018 Ram 2500 Pickup, Ram 3500 Pickup, 3500 Cab Chassis, 4500 and 5500 Cab Chassis vehicles. The hydraulic control unit (HCU) may fail, which can cause the anti-lock brake (ABS), electronic stability control (ESC), and traction control systems to fail.

Risk: A loss of anti-lock brakes, electronic stability control, or traction control can increase the risk of a crash.

Fix: Dealers will replace the brake HCU, or replace the HCU motor, free of charge. Owner notification letters were mailed beginning January 9, 2025. Owners may contact FCA customer service at 1-800-853-1403. FCA's number for this recall is C4B.

Campaign 24V896000 on NHTSA.gov
Latches/locks/linkages: tailgate: latchMay 9, 2019 · Campaign 19V347000

Chrysler (FCA US LLC) is recalling certain 2015-2017 Ram 1500, 2500 and 3500 pickup trucks equipped with an 8 foot bed and a power locking tailgate. Chrysler is also recalling all 2013-2014 and 2018 Ram 1500, 2500 and 3500 pickup trucks built before April 1, 2018 with a 6 or 8 foot bed and a power locking tailgate. On August 29, 2019 Chrysler expanded the recall to include an additional 693,128 model year 2013-2014 Ram 1500, 2500 and 3500 pickup trucks.

Risk: If the tailgate opens while the vehicle is being driven, cargo may fall out the vehicle and create a road hazard, increasing the risk of crash.

Fix: Chrysler will notify owners, and dealers will repair the tailgate latch, free of charge. The recall began May 23, 2019. Chrysler is expected to notify owners of the expanded population on October 18, 2019. Owners may contact FCA US customer service at 1-800-853-1403. FCA US's number for this recall is V44.

Campaign 19V347000 on NHTSA.gov
Steering: linkages: drag: link: connectionJanuary 25, 2019 · Campaign 19V021000

Chrysler (FCA US LLC) is recalling certain 2013-2018 Ram 3500 and 2014-2018 Ram 3500 Chassis Cab and Ram 2500 vehicles. The outboard steering linkage jam nut may loosen, allowing one end of the drag link to separate.

Risk: A drag link separation can cause a loss of steering control, increasing the risk of crash.

Fix: Chrysler will notify owners, and dealers will check the steering linkage jam nut tightness, replacing the drag link assembly or welding the nut to the adjuster sleeve, free of charge. The recall began March 22, 2019. Owners may contact Chrysler customer service at 1-800-853-1403.

Campaign 19V021000 on NHTSA.gov
Steering: linkagesOctober 16, 2018 · Campaign 18E096000

Streetcar ORV LLC (Streetcar) is recalling certain American Expedition Vehicles (AEV) 3" Dualsport aftermarket suspension kits, part numbers N0436000 and N0436001, sold for installation on 2013-2018 RAM 2500 and 3500HD trucks. Improper installation and machining of the original equipment steering knuckle may weaken the joint between the steering drag link and knuckle.

Risk: The weakened connection may result in a fractured steering drag link, causing a loss of steering and increasing the risk of a crash.

Fix: Streetcar will notify owners and dealers will inspect and install a new steering knuckle, free of charge. The recall began December 3, 2018. Owners may contact AEV customer service at 1-248-926-0256, extension 500.

Campaign 18E096000 on NHTSA.gov
Show 4 older recalls
Back over prevention: sensing system: cameraJune 14, 2018 · Campaign 18V398000

Chrysler (FCA US LLC) is recalling certain 2018 Dodge Journey and RAM 1500, 2500, and 3500 vehicles. The backup camera may experience a loss of image display while backing up. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rearview Mirrors."

Risk: A loss of image in the rearview camera while backing up can increase the risk of a crash.

Fix: Chrysler will notify owners, and dealers will replace the rearview mirror, free of charge. The recall began August 2, 2018. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is U56.

Campaign 18V398000 on NHTSA.gov
Electrical system: wiringMay 17, 2018 · Campaign 18V332000

Chrysler (FCA US LLC) is recalling certain 2014-2018 Dodge Journey, Charger and Durango, RAM 2500, 3500, 3500 Cab Chassis (more than 10,000lb), 4500 Cab Chassis and 5500 Cab Chassis, Jeep Cherokee and Grand Cherokee and Chrysler 300, 2014-2019 RAM 1500, 2015-2018 Dodge Challenger, 2015-2017 Chrysler 200, 2016-2018 RAM 3500 Cab Chassis (less than 10,000 lb), 2017-2018 Chrysler Pacifica and 2018 Jeep Wrangler vehicles.

Risk: If the vehicle maintains its speed or accelerates despite attempts to deactivate the cruise control, there would be an increased risk of a crash.

Fix: Chrysler will notify owners, and dealers will inspect the software, and perform a software flash on the engine or powertrain control module, free of charge. The recall began June 4, 2018. Owners may contact Chrysler customer service at 1-800-853-1403.

Campaign 18V332000 on NHTSA.gov
Power train: automatic transmissionFebruary 8, 2018 · Campaign 18V100000

Chrysler (FCA US LLC) is recalling certain 2017-2018 RAM 1500, 2500, 3500, 3500 Cab Chassis, 4500 Cab Chassis, and 5500 Cab Chassis vehicles, all equipped with a column shifter. Pushing the brake pedal for prolonged periods when the vehicle is running and in PARK may cause the Brake Transmission Shift Interlock (BTSI) pin to stick in the open position. With the pin in the open position, the transmission can be shifted out of PARK into any gear without pushing the brake pedal or having the key in the ignition.

Risk: Being able to shift the transmission without pushing the brake pedal and/or without a key in the ignition can increase the risk of an unintended vehicle rollaway that may result in personal injury or a crash.

Fix: Chrysler will notify owners and dealers will update the Body Control Module software. Dealers will also test the BTSI operation, replacing the solenoid as necessary. The recall began February 26, 2018. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is U11.

Campaign 18V100000 on NHTSA.gov
EquipmentDecember 21, 2017 · Campaign 17V824000

Chrysler (FCA US LLC) is recalling various Dodge, Chrysler, and RAM vehicles equipped with Kidde Plastic-Handle or Push Button 'Pindicator' Fire Extinguishers. A list of the affected trailer models is available at: https://static.nhtsa.gov/odi/rcl/2017/RMISC-17V824-0103.pdf. These extinguishers may become clogged, preventing the extinguisher from discharging as expected or requiring excessive force to activate the extinguisher.

Risk: If the fire extinguisher does not function properly, it can increase the risk of injury in the event of a fire.

Fix: Chrysler will notify owners instructing them to contact Kidde for a replacement fire extinguisher, free of charge. The recall began February 14, 2018. Owners may contact Chrysler customer service at 1-800-853-1403 or Kidde customer service service toll-free at 1-855-262-3540, or online at www.kidde.com and click on…

Campaign 17V824000 on NHTSA.gov

Owner complaints by component

Complaints
2,609
Crashes
39
Fires
5
Injuries
12
  • Service brakes2,348
  • Electrical system476
  • Hydraulic465
  • Vehicle speed control342
  • Forward collision avoidance225
  • Unknown or other103
  • Steering87
  • Power train75

Complaints are reports owners filed with NHTSA; they are not verified and a complaint can name more than one component. A high count reflects how many were sold as much as how often something fails.

Source: NHTSA public data (recalls, complaints and the New Car Assessment Program), covering Ram 2500. Check nhtsa.gov/recalls for the latest.

2018 Ram 2500 owner's manuals & publications

The manufacturer's owner's manual, quick guides, radio manuals, supplements and warranty booklets for the 2018 model year.

Owner's manuals

Quick guides

Uconnect & radio

Supplements

Warranty

On Mopar.com

Manuals and guides are hosted by the manufacturer on vehicleinfo.mopar.com and open as PDFs. Mopar.com's owner site also has VIN-specific manuals and recall lookups.

Great Lakes owner notes

The 2018 Ram 2500 against salt, snow and steep grades

From the Snowbelt east of Cleveland to the ridges of West Virginia and east Tennessee, this part of the country throws salt, snow and grade at every vehicle. Here is how the 2018 Ram 2500 specifications line up against all three.

Oil for a frozen-driveway start

Oil capacity is 7 qt (5.7L), 7 qt (6.4L) and 12 qt (6.7L Cummins turbo diesel), and the manual lists SAE 5W-20 (5.7L), SAE 0W-40 (6.4L) and SAE 15W-40 or 5W-40 by temperature (6.7L Cummins turbo diesel). Where more than one engine appears in the lineup, the engine code on the window sticker settles which grade applies. The wrong one in a West Virginia winter gives up a little protection on every cold start, and over years of driveway starts that adds up.

Starting in single digits

Battery care in this schedule: inspect it and clean and tighten the terminals as required at each oil change, and the spec sheet rates it at 730 cold-cranking amps. A battery that bakes through a Nashville or Memphis summer ages faster, then gets found out by the first hard freeze. Have it load-tested in fall rather than waiting for a slow crank.

Which wheels do the pulling

Every 2018 version in the factory data drives with four-wheel drive. That is a real asset on a lake-effect morning in South Bend or Muskegon and on gravel switchbacks in West Virginia, but it does not shorten stopping distances: winter tires and extra following room still decide how a squall ends. On a used 2500, check that the system engages and the tires match in size and wear.

Towing to the lake

The schedule lists axle fluid, automatic transmission fluid and transfer case fluid service for frequent trailer towing, starting at 20,000 miles. Whether it is a fishing boat headed for the Ohio River or a pop-up camper bound for the Smokies, the extra heat of towing ages these fluids faster, most of all on long July climbs.

Filters for dust and pollen

The cabin air filter first comes up at 20,000 miles. Spring pollen in the Ohio and Tennessee valleys is heavy, and a clogged cabin filter also slows the defroster in winter because it chokes the blower's airflow. It is a five-minute job on most vehicles.

Fuel grade and winter reserve

Fuel requirement: 87 octane (89 recommended). In winter, keeping the tank above half is a sensible habit across the Great Lakes states, because lake-effect pileups and mountain snow on I-64 or I-77 can leave traffic stopped for hours, and fuel is your heat.

Specifications are the manufacturer's; the weather and road context is ours. When a note here and the 2018 owner's manual disagree, follow the manual.

2018 Ram 2500 questions

How much oil does the 2018 Ram 2500 take?

With a filter change: 5.7L engines, 7 qt / 6.6 L; 6.4L engines, 7 qt / 6.6 L; and 6.7L Cummins turbo diesel engine, 12 qt / 11.4 L. Capacities are from the owner's manual; check the dipstick or oil-life display after filling.

What kind of oil does the 2018 Ram 2500 use?

5.7L engine: API Certified SAE 5W-20 (MS-6395); 6.4L engine: SAE 0W-40 full synthetic, API SN (MS-12633); Engine oil filter: Mopar brand filter; 6.7L Cummins turbo diesel engine, ambient above 0°F (-18°C): SAE 15W-40, API CJ-4 (Cummins CES 20081 oils also acceptable) (MS-10902); 6.7L Cummins turbo diesel engine, ambient below 0°F (-18°C): SAE 5W-40 synthetic, API CJ-4 (MS-10902); and 6.7L Cummins turbo diesel engine: Mopar brand filter.

When is the first scheduled maintenance on the 2018 Ram 2500?

At 20,000 miles: inspect front suspension, tie rod ends, and replace if necessary; 2500/3500 models:inspect the front and rear axle surfaces. 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 axle fluid; inspect the brake linings, replace as necessary; adjust parking brake as necessary; replace cabin air filter. Oil changes in between follow the oil-change indicator.

Where can I find the 2018 Ram 2500 owner's manual?

The manufacturer publishes it free on Mopar.com as a PDF (linked in the manuals section above), along with quick guides, radio manuals and the warranty booklet.

What MPG does the 2018 Ram 2500 get?

The EPA doesn't publish a fuel-economy rating for the 2500: heavy-duty pickups, chassis cabs and full-size vans above 8,500 pounds gross vehicle weight are exempt from fuel-economy labeling, so there is no official MPG figure to quote.

What changed on the 2018 Ram 2500?

Dropped trim: Laramie Power Wagon; New body styles: Reg/Crew, Reg/Crew/Mega and Crew/Mega; Body styles dropped: Regular/Crew Cab, Regular/Crew/Mega Cab, Crew/Mega Cab and Crew Cab; New option package: Limited Tungsten Package.

Does the 2018 Ram 2500 have recalls?

NHTSA lists 10 safety recall campaigns for the 2018 Ram 2500. The most recent: Air bags: side/window (September 2025), Air bags: side/window (January 2025), and Service brakes, hydraulic: antilock/traction control/electronic limited slip (November 2024). NHTSA's data was last fetched November 8, 2026. Recalls are listed by model year, so a given vehicle may or may not be covered: enter its VIN at nhtsa.gov/recalls or ask a dealer to see which are open.

What are the most common safety complaints about the 2018 Ram 2500?

Owners have filed 2,609 complaints about the 2018 Ram 2500 with NHTSA. The components named most often are service brakes (2,348), electrical system (476), and hydraulic (465). 39 complaints involved a crash and 5 complaints a fire. Complaints are reports from owners that NHTSA does not verify, so treat them as a signal to look into, not a finding.

What is the 2018 Ram 2500's NHTSA crash-test rating?

NHTSA's overall 5-Star Safety Rating for the 2018 Ram 2500 is 4 out of 5 stars (Ram 2500 Crew PU/CC 2WD: 4 and Ram 2500 Crew PU/CC 4WD: 4). The rating combines frontal, side and rollover tests.

Specifications come from the manufacturer's spec comparison and its media-site specification sheets; maintenance schedules, fluids and publications come from Mopar's owner site and owner's manuals. Equipment and ratings vary by configuration; check the owner's manual or a dealer for a specific vehicle.