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Ram 2500 · Model year 2015

2015 Ram 2500 specs, maintenance & manuals

Owner and shopper reference for the 2015 Ram 2500, built from Stellantis and Mopar data: the factory spec sheet, the maintenance schedule, fluid capacities and 13 manufacturer publications.

Schedule covers
150k miles
Publications
13

2015 Ram 2500 specs & features

Engines, gear ratios, suspension, brakes, dimensions and capacities as published in the manufacturer's 2015 specification sheets.

General information+
Vehicle TypeRegular Cab, Crew Cab and Mega Cab
Assembly PlantsSaltillo Truck Assembly Plant, Coahuila, Mexico
EPA Vehicle ClassStandard Pickup
Body and chassis+
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
Engine: 5.7-liter HEMI V-8+
Type and DescriptionEight-cylinder, 90-degree V-8, 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
Power (SAE gross)383 bhp (286 kW) @ 5,600 rpm,
Torque (SAE gross)400 lb.-ft. (542 N•m) @ 4,000 rpm
Max. 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 qt. (6.6 liter)
Coolant Capacity17.30 liters
Emission ControlThree-way catalytic converters, heated oxygen sensors, internal engine features and knock sensors
Engine: 6.4-liter HEMI V-8+
Type and DescriptionEight-cylinder, 90-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 SystemVVT, push-rod operated overhead valves (16, two-per-cylinder), 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 bear caps, 356 aluminum cylinder heads with hemispherical combustion chambers
Compression Ratio10.0:1
Power (SAE gross)410 hp (306 kW) @ 5,600 rpm
Torque (SAE gross)429 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 qt. (6.6 liters)
Coolant Capacity15.75 liters
Emission ControlThree-way catalytic converters, heated oxygen sensors, cooled electronic EGR and individual cylinder fuel control
Engine: 6.7-liter Cummins Turbo Diesel I-6 (two versions)+
Type and DescriptionSix-cylinder, inline, liquid-cooled, turbocharged, intercooled
Displacement408 cu. in. (6,690 cu. cm)
Bore x Stroke4.21 x 4.88 (107 x 124)
Valve SystemOHV, 24 valves, solid lifters
Fuel InjectionElectronic high-pressure common rail
ConstructionCast-iron block and head
Compression Ratio16.2:1
Power (SAE gross)350 bhp (261 kW) @ 2,800 rpm (G56 manual transmission)
Torque (Manual SAE gross)660 lb.-ft. (881 N•m) @ 1,400 rpm
Power (SAE gross)370 bhp (276 kW) @ 2,800 rpm (68RFE automatic transmission)
Torque (Automatic SAE gross)800 lb.-ft. (1084 N•m) @ 1,600 rpm
Maximum High-idle Engine Speed3,200 rpm
Fuel RequirementUltra low sulfur diesel
Oil Capacity12.0 qt. (11.3 liter) with filter
Coolant Capacity22.50 liters
Emission ControlsSelective Catalytic Reduction (SCR)
Transmission: G56 — manual six-speed overdrive+
Availability6.7-liter diesel
DescriptionSynchronized in all gears
1st5.94
2nd3.28
3rd1.98
4th1.31
5th1.0
6th0.74
Reverse5.42
Axle ratios3.42
Transmission: 66RFE — automatic six-speed+
Availability5.7-liter gas and 6.4-liter gas
DescriptionThree planetary gear sets, one overrunning clutch, full electronic control, electronically controlled converter clutch
1st3.23
2nd1.84
3rd1.41
4th1.00
5th0.82
6th0.63
Reverse4.44
Axle ratios3.73 and 4.10
Transmission: 68RFE — automatic six-speed+
Availability6.7-liter diesel
DescriptionThree planetary gear-sets, one overrunning clutch, full electronic control, electronically controlled converter clutch
1st3.23
2nd1.84
3rd1.41
4th1.0
5th0.82
6th0.63
Reverse4.44
Axle ratios3.42
Transfer cases: BW 44-46, BW 44-47+
AvailabilityOptional on 6.7-liter diesel, 6.4-liter gas and 5.7-liter gas
TypePart-time - BW 44-47 manual shift and BW 44-46 electric shift
Operating Modes2WD; 4WD High; Neutral; 4WD Low
Low-range Ratio2.64
Center DifferentialNone
Axles+
Front (4x4)AAM 9.25 inch beam front axle with center disconnect
RearAAM 11.5 inch beam rear axle
Electrical system+
Alternator: Rating160-amp standard with 5.7-liter
Alternator: Rating180-amp included with 6.4-liter gas and 6.7-liter, optional on 5.7-liter
Alternator: RatingDual (220 and 160) optional on 6.4-liter gas
Alternator: RatingDual 220-amp optional on 6.7-liter diesel
Battery: DescriptionGroup 65, maintenance-free, 730 CCA on 5.7-liter gas and 6.4-liter gas
Battery: DescriptionDual Group 65, maintenance-free, 730 CCA on 6.7-liter diesel
Suspension+
2WD4WD
FrontThree-link with track bar, coil springs, stabilizer bar, solid axleThree-link with track bar, coil springs, stabilizer bar, solid axle
RearFive-link with track bar, coil springs, stabilizer bar, solid axleFive-link with track bar, coil springs, stabilizer bar, solid axle (optional air bags)
Brakes+
Front: Size and Type – in. (mm)Rotors 14.17 x 1.54-in. disc with twin-piston pin-slider caliper and ABS
Rear: Size and Type – in. (mm)Rotors 14.09 x 1.34-in. disc with twin-piston pin-slider caliper and ABS
Power-assist typeDual-rate, tandem diaphragm vacuum (gas)
Power-assist typeHydro-boost (diesel)
Air bags+
Reg Cab6
Crew Cab6
Mega Cab6
Steering+
Power-assistHydraulic assist
Steering: Regular Cab pickup+
2WD4WD
Box LengthLongLong
Wheelbase (nominal) – in. (mm)140.5140.5
Turning Diameter – ft. (m)(a)45.141.6

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

Steering: Crew Cab pickup+
2WD2WD4WD4WD
Box LengthShortLongShortLong
Wheelbase (nominal) – in. (mm)149.5169.4149.5169.4
Turning Diameter – ft. (m)(a)47.553.243.949.2

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

Steering: Mega Cab pickup+
2WD4WD
Wheelbase (nominal) – in. (mm)160.5160.0
Turning Diameter – ft. (m)(a)50.6746.86

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

Cargo box+
Short boxLong box
Nominal Box Size6-ft 4-in (Regular, Crew or Mega)8-ft (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 Width in. – (mm)60.4 (1,535.3)60.4 (1,535.3)
Dimensions: Regular Cab 140.5" WB 8-ft. box SRW+
4x24x4
Wheelbase140.5140.5
Track Width – Front68.668.3
Track Width – Rear68.268.2
Overall Length231.0231.0
Overall Width @ SgRP Front78.978.9
Overall Height73.375.7
Suspension or Axle to Ground – Front7.67.5
Suspension or Axle to Ground – Rear7.47.4
Approach Angle13.223.0
Ramp Breakover Angle16.516.9
Departure Angle18.121.6
Dimensions: Crew Cab 149.5" WB 6-ft. 4-in. box SRW+
4x24x4
Wheelbase149.5149.5
Track Width – Front68.668.3
Track Width – Rear68.268.2
Overall Length237.4237.4
Overall Width @ SgRP Front79.179.1
Overall Height73.777.7
Suspension or Axle to Ground – Front7.17.4
Suspension or Axle to Ground – Rear7.37.1
Approach Angle13.421.8
Ramp Breakover Angle15.118.2
Departure Angle18.822.3
Dimensions: Crew Cab 169.5" WB 8-ft. box SRW+
4x24x4
Wheelbase169.4168.9
Track Width – Front68.668.3
Track Width – Rear68.268.2
Overall Length259.4259.4
Overall Width @ SgRP Front79.179.1
Overall Height73.577.6
Suspension or Axle to Ground – Front7.17.3
Suspension or Axle to Ground – Rear7.37.2
Approach Angle13.421.7
Ramp Breakover Angle14.116.5
Departure Angle18.021.4
Dimensions: Mega Cab 160.5" WB 6-ft. 4-in. box SRW+
4x24x4
Wheelbase160.5160.5
Track Width – Front68.668.3
Track Width – Rear68.268.2
Overall Length248.4248.4
Overall Width @ SgRP Front79.179.1
Overall Height74.178.3
Suspension or Axle to Ground – Front7.88.1
Suspension or Axle to Ground – Rear7.87.7
Approach Angle14.023.9
Ramp Breakover Angle15.818.3
Departure Angle19.123.0
Accommodations+
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: HeadroomN/A39.9 (1,013.5)40.3 (1,023.6)
Rear: LegroomN/A40.3 (1,023.6)43.3 (1,099.5)
Rear: Shoulder RoomN/A65.7 (1,668.8)65.7 (1,668.8)
Rear: Hip RoomN/A63.2 (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)N/A61.1 (1.7)66.3 (1.9)

Source: 2015 Ram 2500 Heavy Duty Specifications (Stellantis media site).

2015 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.

A dot means the service is due at that mileage or after that many years, whichever comes first. Engines: see schedule title.

Service20k2 yr30k3 yr40k4 yr50k5 yr60k6 yr70k7 yr80k8 yr90k9 yr100k10 yr110k11 yr120k12 yr130k13 yr140k14 yr150k15 yr
Additional Inspections
Inspect the CV/Universal joints.
Inspect front suspension, tie rod ends, and replace if necessary.
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.
Inspect transfer case fluid.
Additional Maintenance
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.

Severe duty (all models)

  • Change engine oil at 4,000 miles (6,500 km) if the vehicle is operated in a dusty and off road environment or is operated predominantly at idle or only very low engine RPM.

Once a month or before a long trip

  • Check engine oil level.
  • Check windshield washer fluid level.
  • Check tire pressure and look for unusual wear or damage. Rotate tires at the first sign of irregular wear, even if it occurs before the oil indicator system turns on.
  • Check the fluid levels of the coolant reservoir, brake master cylinder, power steering (2500/3500 models only) and automatic transmission (six-speed only) and fill as needed.
  • Check function of all interior and exterior lights.

At every oil change interval as indicated by the oil change indicator system

  • 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).

Oil change limit (2500-3500 models)

  • Oil change intervals must not exceed 8,000 miles (13,000 km), twelve months or 350 hours of engine run time, whichever comes first.

Transcribed from the printed schedule in the owner's manual.

2015 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 toUSMetric
Fuel tank (approximate)2500/3500 shortbed models31 gal117 L
2500/3500 longbed models32 gal121 L
Engine oil with filter5.7L engines (SAE 5W-20)7 qt6.6 L
5.7L engine (SAE 5W-30, 2500/3500 trucks above 14,000 lb / 6,350 kg GCWR)7 qt6.6 L
6.4L engines (SAE 0W-40, MS-12633)7 qt6.6 L
Cooling system5.7L engine, 2500/3500 models18.3 qt17.3 L
6.4L engine, 2500/3500 models16.6 qt15.7 L
Fuel tank (approximate)6.7L Cummins turbo diesel, 2500/3500 Standard Cab longbed models28 gal106 L
6.7L Cummins turbo diesel, 2500/3500 Crew/Mega Cab shortbed models31 gal129 L
6.7L Cummins turbo diesel, 2500/3500 Crew Cab longbed models32 gal132 L
6.7L Cummins turbo diesel, standard rear tank, Chassis Cab only52 gal197 L
6.7L Cummins turbo diesel, optional midship tank, Chassis Cab only22 gal83 L
Diesel exhaust fluid tank (approximate)6.7L Cummins turbo diesel, 2500/3500 models5.5 gal21 L
6.7L Cummins turbo diesel, Chassis Cab9 gal34 L
Engine oil with filter6.7L Cummins turbo diesel12 qt11.4 L
Cooling system6.7L Cummins turbo diesel (Mopar 10 Year/150,000 Mile Formula coolant)5.7 gal21.4 L

Engine fluids

ComponentFluid / gradeStandardMopar product
Engine coolant (All gasoline engines)Organic Additive Technology (OAT) coolant, 10 year/150,000 mile formulaMS.90032Mopar Antifreeze/Coolant 10 Year/150,000 Mile Formula OAT
Engine oil (5.7L engine)SAE 5W-20, API certified (SAE 5W-30 Mopar oil approved to MS-6395 acceptable if 5W-20 is not available)MS-6395Mopar SAE 5W-20 engine oil
Engine oil (5.7L engine, 2500/3500 trucks above 14,000 lb (6,350 kg) GCWR)SAE 5W-30, API certifiedMS-6395Mopar SAE 5W-30 engine oil
Engine oil (6.4L engine)Full synthetic SAE 0W-40, API SN, for all operating temperaturesMS-12633Pennzoil Ultra 0W-40 or equivalent Mopar engine oil
Engine oil filter (All gasoline engines)Mopar brand engine oil filter—Mopar engine oil filter
Spark plugs (All gasoline engines)Mopar spark plugs—Mopar spark plugs
Engine coolant (6.7L Cummins turbo diesel)Organic Additive Technology (OAT) coolant, 10 year/150,000 mile formula—Mopar Antifreeze/Coolant 10 Year/150,000 Mile Formula OAT
Engine oil (6.7L Cummins turbo diesel, ambient above 0°F (-18°C))SAE 15W-40 diesel engine oil, API CJ-4 required (Cummins CES 20081 products also acceptable)MS-10902Mopar, Shell Rotella or Shell Rimula 15W-40
Engine oil (6.7L Cummins turbo diesel, ambient below 0°F (-18°C))SAE 5W-40 synthetic diesel engine oil, API CJ-4 requiredMS-10902Mopar, Shell Rotella or Shell Rimula 5W-40 synthetic
Engine oil filter (6.7L Cummins turbo diesel)Mopar brand engine oil filter—Mopar engine oil filter
Fuel filter (6.7L Cummins turbo diesel)Mopar fuel filter, 3 micron rating with water separation—Mopar fuel filter
Crankcase ventilation filter (6.7L Cummins turbo diesel)Mopar CCV filter—Mopar CCV filter
Fuel (6.7L Cummins turbo diesel)Ultra-low-sulfur diesel (15 ppm sulfur max), No. 2 diesel ASTM D-975 Grade S15; climatized No. 2 or up to 50% No. 1 diesel below 20°F (-7°C); biodiesel up to B5 (D-975), and up to B20 (ASTM D-7467) on pickups and Chassis Cabs with optional B20 capabilityASTM D-975 S15—
Diesel exhaust fluid (DEF) (6.7L Cummins turbo diesel)API-certified DEF meeting ISO 22241ISO 22241Mopar Diesel Exhaust Fluid (API Certified)

Chassis fluids & lubricants

ComponentFluid / gradeStandardMopar product
Automatic transmission (Six-speed automatic, gasoline engine)ATF+4 automatic transmission fluid—Mopar ATF+4
Automatic transmission (Six-speed 68RFE, pickup models without PTO (diesel))ATF+4 automatic transmission fluid—Mopar ATF+4
Automatic transmission (Six-speed AS69RC, pickup models with PTO and all Chassis Cab models (diesel))Mopar ASRC automatic transmission fluid or equivalent—Mopar ASRC Automatic Transmission Fluid
Transfer caseBW44-44 transfer case fluid—Mopar BW44-44 Transfer Case Fluid
Front and rear axle (2500/3500 models)SAE 75W-85 HD GL-5 synthetic axle lubricant; limited-slip additive not required—Ram GL-5 Synthetic Axle Lubricant SAE 75W-85 HD
Brake master cylinderDOT 3 brake fluid (DOT 4 acceptable if DOT 3 is unavailable)—Mopar DOT 3
Power steering reservoir (2500/3500 models)Power steering fluid +4 or ATF+4 automatic transmission fluid—Mopar Power Steering Fluid +4 or Mopar ATF+4

Fuel

EngineMinimumEthanol / biodiesel
5.7L/6.4L engines87 octane Regular unleaded (89 for optimum performance (87-89 octane range))Up to 10% (E10)
6.7L Cummins turbo dieselUltra-low-sulfur dieselUp to B5 (ASTM D-975); up to B20 (ASTM D-7467) on pickups and Chassis Cabs with optional B20 capability

Wheel lug nut torque

WheelsTorqueThreadSocket
Cone type130 ft-lb (176 N·m)M14 x 1.5022 mm
Flanged type129 ft-lb (175 N·m)M14 x 1.5022 mm
  • Cooling system capacities and engine oil grade depend on engine and GCWR, as listed.
  • Dual wheels use two-piece lug nuts; clean the nut-to-washer interface when rotating tires.
  • Do not oil wheel studs.
  • Oil change must not exceed 8,000 miles, 12 months or 350 engine hours on 2500/3500 models.
  • Diesel rows come from the 2015 Ram Diesel Supplement (6.7L Cummins); tank sizes there differ from the gasoline table.

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

2015 Ram 2500 owner's manuals & publications

The manufacturer's owner's manual, quick guides, radio manuals, supplements and warranty booklets for the 2015 model year.

2015 Ram 2500 questions

How much oil does the 2015 Ram 2500 take?

With a filter change: 5.7L engines (SAE 5W-20), 7 qt / 6.6 L; 5.7L engine (SAE 5W-30, 2500/3500 trucks above 14,000 lb / 6,350 kg GCWR), 7 qt / 6.6 L; 6.4L engines (SAE 0W-40, MS-12633), 7 qt / 6.6 L; and 6.7L Cummins turbo diesel, 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 2015 Ram 2500 use?

5.7L engine: SAE 5W-20, API certified (SAE 5W-30 Mopar oil approved to MS-6395 acceptable if 5W-20 is not available) (MS-6395); 5.7L engine, 2500/3500 trucks above 14,000 lb (6,350 kg) GCWR: SAE 5W-30, API certified (MS-6395); 6.4L engine: Full synthetic SAE 0W-40, API SN, for all operating temperatures (MS-12633); All gasoline engines: Mopar brand engine oil filter; 6.7L Cummins turbo diesel, ambient above 0°F (-18°C): SAE 15W-40 diesel engine oil, API CJ-4 required (Cummins CES 20081 products also acceptable) (MS-10902); 6.7L Cummins turbo diesel, ambient below 0°F (-18°C): SAE 5W-40 synthetic diesel engine oil, API CJ-4 required (MS-10902); and 6.7L Cummins turbo diesel: Mopar brand engine oil filter.

When is the first scheduled maintenance on the 2015 Ram 2500?

At 20,000 miles or 2 years: inspect front suspension, tie rod ends, and replace if necessary; 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. Oil changes in between follow the oil-change indicator.

Where can I find the 2015 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.

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.