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5th Generation 6.7L Cummins Maintenance Guide And Service Schedule

5th Gen 6.7L Cummins Maintenance Schedule (2019+ Ram HD)

The new 2019+ Ram Heavy Duty trucks are more capable than ever, boasting over 1,000 torque when a high output model is selected. All that torque gives you plenty of power to pull any trailer you can throw at it. Despite being so capable, these trucks still require time and attention when it comes to maintenance. The more diligent and serious you are about maintenance, the less problems you will experience down the road. There is no reason you shouldn’t get a couple hundred thousand miles out of your truck if you follow our 5th Generation 6.7L Cummins maintenance Guide.

You’ll want to follow to maintenance intervals given by Ram in your owner’s manual. It’s more than just that however, you’re going to want to use parts and fluids that meet or exceed OEM specifications. My suggestions is to use OEM filters and fluids exclusively on your 5th Gen Cummins. There is a little wiggle room when it comes to engine oil though as there are some really great aftermarket engine oils for a 5th Generation Cummins. I’m going to make it very easy for you. Just follow the charts listed below when it comes to maintaining your 2019+ 6.7L Cummins engine. Use the filters and the fluids I provide below. I’ll even provide links on where to buy them. Here’s everything you need to properly maintain your 5th Generation Ram with the 6.7L Cummins motor.

5th Gen Cummins Maintenance Guide

2019+6.7L Cummins Maintenance Schedule – Normal Operating Conditions

Maintenance/ServiceMilesKilometersMonths
Change Oil15,000 miles24,000 km12 mo.
Change Oil
Filter
15,000 miles24,000 km12 mo.
Change Engine-
mounted Fuel
Filter
15,000 miles24,000 km12 mo.
Change Chassis-
mounted Fuel
Filter
15,000 miles24,000 km12 mo.
Replace Engine Air
Filter
30,000 miles48,000 km24 mo.
Replace Cabin
Air Filter
22,500 miles36,000 km18 mo.
Flush Cooling
System
150,000 miles240,000 km120 mo.
Change Crankcase
Ventilation Filter (CCV)
75,000 miles120,000 km60 mo.
Replace 68RFE
Transmission Fluid
& Filter(s)
120,000 miles192,000 km96 mo.
Replace Aisin (AS69RC)
Transmission Fluid
30,000 miles48,000 km24 mo.
Replace Aisin (AS69RC)
Transmission Filter
60,000 miles96,000 km48 mo.
Replace Transfer
Case Fluid
60,000 miles96,00048 mo.
Replace Rear
Differential Fluid
Inspect every
20,000 miles;
Add Fluid if
necessary
Inspect every
32,000 km;
Add Fluid if
necessary
N/A
Replace Front
Differential Fluid
Inspect every
20,000 miles;
Add Fluid if
necessary
Inspect every
32,000 km;
Add Fluid if
necessary
N/A
Replace Power
Steering Fluid
97,500 miles156,000 km78 mo.

2019+6.7L Cummins Maintenance Schedule – Severe Operating Conditions

Maintenance/ServiceMilesKilometersMonths
Change Oil15,000 miles24,000 km12 mo.
Change Oil
Filter
15,000 miles24,000 km12 mo.
Change Engine-
mounted Fuel
Filter
15,000 miles24,000 km12 mo.
Change Chassis-
mounted Fuel
Filter
15,000 miles24,000 km12 mo.
Replace Engine Air
Filter
30,000 miles48,000 km24 mo.
Replace Cabin
Air Filter
22,500 miles36,000 km18 mo.
Flush Cooling
System
150,000 miles240,000 km120 mo.
Change Crankcase
Ventilation Filter (CCV)
75,000 miles120,000 km60 mo.
Replace 68RFE
Transmission Fluid
& Filter(s)
60,000 miles96,000 km48 mo.
Replace Aisin (AS69RC)
Transmission Fluid
30,000 miles48,000 km24 mo.
Replace Aisin (AS69RC)
Transmission Filter
60,000 miles96,000 km48 mo.
Replace Transfer
Case Fluid
30,000 miles48,00024 mo.
Replace Rear
Differential Fluid
20,000 miles32,000 kmN/A
Replace Front
Differential Fluid
20,000 miles32,000 kmN/A
Replace Power
Steering Fluid
97,500 miles156,000 km78 mo.

Every 7,500 Miles:

  • Check Diesel Exhaust Fluid. Add DEF if necessary.
  • Rotate the tires.
  • Inspect/lubricate front end.
  • Inspect/lubricate CV/Universal Joints

Every 22,500 Miles:

  • Inspect the Brake Linings.
  • Check & Adjust Parking Brake.
  • Inspect Drive Belt, adjust as necessary.
  • Inspect wheel bearings.

5th Gen (2019+ Ram HD) 6.7L Cummins Oil, Fluid, & Filter Specs

If you’re going to complete 5th Generation 6.7L Cummins maintenance by yourself, you need to use the right parts. Don’t cheap out and purchase aftermarket filters or fluids. They don’t offer the same quality as OEM parts. Use only Mopar or Fleetguard products for your 6.7L 5th Gen Cummins. You have a little flexibility with engine oil, as there are some awesome engine oils like the Shell Rotella products. Be careful when purchasing engine oil for your 2019+ 6.7L Cummins engine. You may need a different viscosity according to the climate you live in. Check your owner’s manual or the diesel supplement for the engine oil viscosity chart.

Part TypePart #
Engine OilAmbient Temps > 0 Degrees: 10W-30
Shell Rotella T4 10W-30
Shell Rotella T5 10W-30
Ambient Temps < 0 Degrees: Synthetic 5W-40
Shell Rotella T6 5W-40
Engine Oil FilterMopar MO285, Fleetguard LF16035
Fuel Filter
Engine-Mounted
Chassis-Mounted
See Below
Mopar 68157291AA
Mopar 68436631AA
Engine Air FilterMopar 53034051AB
Fleetguard AF27684
CoolantMopar Antifreeze/Coolant
10 Year/150,000 Mile Formula OAT
Brake FluidMopar DOT 3
68RFE Transmission FluidMopar ATF+4 fluid
Aisin (AS69RC)
Transmission Fluid
Mopar ASRC Automatic
Transmission Fluid
External Transmission
Filter
Mopar 5179267AD
Internal Transmission
Filter
Mopar 5013470AE
Transfer Case FluidBW44-44 Fluid
Mopar 68089195AA
Front Differential Fluid
9.25″ Axle
SAE 75W-85 HD Ram GL-5
Synthetic Axle Lubricant
Rear Differential Fluid
(SRW)
11.5″ Axle (SRW)
12.0″ Axle (SRW)
SAE 75W-85 HD Ram GL-5 Synthetic Axle
Lubricant
Rear Differential Fluid
(DRW)
12.0″ Axle (DRW)
Mopar GL-5 Synthetic Gear Lubricant
SAE 75W-140
Diesel Exhaust FluidPeak BlueDEF 4 Pack
Peak BlueDEF 1 Pack (1 Gallon)

5th Generation Cummins Fluid Capacities

When you perform 5th Generation Cummins maintenance, you need to know how much fluid to put into your truck. When filling your vehicle with fluid or oil, always pay attention to the dip stick or fill line. Never exceed the max or full line. Check your owner’s manual for help with properly filling your vehicle with oil or fluids.

Oil/FluidCapacity – QuartsCapacity – Liters
Engine Oil12 Quarts11.4 Liters
Auto Transmission FluidN/AN/A
Manual Transmission FluidN/AN/A
Diesel Exhaust Fluid5.5-5.7 Gallons21 Liters
Transfer CaseN/AN/A
Coolant
Ram 2500/3500 /w 68RFE
Ram 3500 /w AS69RC
Ram 3500/4500 Chassis Cab AS69RC
Ram 5500 Chassis Cab AS69RC
See Below
22.0 Quarts
22.5 Quarts
22.3 Quarts
22.8 Quarts
See Below
20.8 Liters
21.3 Liters
21.1 Liters
21.6 Liters
Front Differential FluidN/AN/A
Rear Differential FluidN/AN/A

Want more Information on the 2019+ Ram HD Diesel?

Check out our other 5th Generation Cummins resources and articles by clicking on one of the links below!

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ABOUT Kamil

Founder of Diesel Resource and a complete diesel head. Has a little bit of problem buying too many trucks. Learn more about him by checking out his truck.