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.
2019+6.7L Cummins Maintenance Schedule – Normal Operating Conditions
| Maintenance/Service | Miles | Kilometers | Months |
| Change Oil | 15,000 miles | 24,000 km | 12 mo. |
| Change Oil Filter | 15,000 miles | 24,000 km | 12 mo. |
| Change Engine- mounted Fuel Filter | 15,000 miles | 24,000 km | 12 mo. |
| Change Chassis- mounted Fuel Filter | 15,000 miles | 24,000 km | 12 mo. |
| Replace Engine Air Filter | 30,000 miles | 48,000 km | 24 mo. |
| Replace Cabin Air Filter | 22,500 miles | 36,000 km | 18 mo. |
| Flush Cooling System | 150,000 miles | 240,000 km | 120 mo. |
| Change Crankcase Ventilation Filter (CCV) | 75,000 miles | 120,000 km | 60 mo. |
| Replace 68RFE Transmission Fluid & Filter(s) | 120,000 miles | 192,000 km | 96 mo. |
| Replace Aisin (AS69RC) Transmission Fluid | 30,000 miles | 48,000 km | 24 mo. |
| Replace Aisin (AS69RC) Transmission Filter | 60,000 miles | 96,000 km | 48 mo. |
| Replace Transfer Case Fluid | 60,000 miles | 96,000 | 48 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 miles | 156,000 km | 78 mo. |
2019+6.7L Cummins Maintenance Schedule – Severe Operating Conditions
| Maintenance/Service | Miles | Kilometers | Months |
| Change Oil | 15,000 miles | 24,000 km | 12 mo. |
| Change Oil Filter | 15,000 miles | 24,000 km | 12 mo. |
| Change Engine- mounted Fuel Filter | 15,000 miles | 24,000 km | 12 mo. |
| Change Chassis- mounted Fuel Filter | 15,000 miles | 24,000 km | 12 mo. |
| Replace Engine Air Filter | 30,000 miles | 48,000 km | 24 mo. |
| Replace Cabin Air Filter | 22,500 miles | 36,000 km | 18 mo. |
| Flush Cooling System | 150,000 miles | 240,000 km | 120 mo. |
| Change Crankcase Ventilation Filter (CCV) | 75,000 miles | 120,000 km | 60 mo. |
| Replace 68RFE Transmission Fluid & Filter(s) | 60,000 miles | 96,000 km | 48 mo. |
| Replace Aisin (AS69RC) Transmission Fluid | 30,000 miles | 48,000 km | 24 mo. |
| Replace Aisin (AS69RC) Transmission Filter | 60,000 miles | 96,000 km | 48 mo. |
| Replace Transfer Case Fluid | 30,000 miles | 48,000 | 24 mo. |
| Replace Rear Differential Fluid | 20,000 miles | 32,000 km | N/A |
| Replace Front Differential Fluid | 20,000 miles | 32,000 km | N/A |
| Replace Power Steering Fluid | 97,500 miles | 156,000 km | 78 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 Type | Part # |
| Engine Oil | Ambient 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 Filter | Mopar MO285, Fleetguard LF16035 |
| Fuel Filter Engine-Mounted Chassis-Mounted | See Below Mopar 68157291AA Mopar 68436631AA |
| Engine Air Filter | Mopar 53034051AB Fleetguard AF27684 |
| Coolant | Mopar Antifreeze/Coolant 10 Year/150,000 Mile Formula OAT |
| Brake Fluid | Mopar DOT 3 |
| 68RFE Transmission Fluid | Mopar ATF+4 fluid |
| Aisin (AS69RC) Transmission Fluid | Mopar ASRC Automatic Transmission Fluid |
| External Transmission Filter | Mopar 5179267AD |
| Internal Transmission Filter | Mopar 5013470AE |
| Transfer Case Fluid | BW44-44 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 Fluid | Peak 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/Fluid | Capacity – Quarts | Capacity – Liters |
| Engine Oil | 12 Quarts | 11.4 Liters |
| Auto Transmission Fluid | N/A | N/A |
| Manual Transmission Fluid | N/A | N/A |
| Diesel Exhaust Fluid | 5.5-5.7 Gallons | 21 Liters |
| Transfer Case | N/A | N/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 Fluid | N/A | N/A |
| Rear Differential Fluid | N/A | N/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!
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.