Goose55
Senior Member
- Joined
- Aug 29, 2020
- Posts
- 753
- Reaction score
- 421
- Location
- Ajo, AZ
- Ram Year
- 2019
- Engine
- Cummins High Output 6.7L
My Cummins 6.7 oil is now staying a whole lot cleaner, and for longer, ever since I've been gearing down around town. A lot of the town is only 25 mph, and the Aisin trans will go into 4th or even 5th gear, with a much too low engine rpm. So, as advised by the lead Cummins tech at my dealership, whenever I set out, I tap down on the gear limit toggle, to keep it in 3rd gear. He said that oil getting gritty very quickly is a common issue and that it can even lead to noise coming from the engine, and damage. I'm sure glad I took his advice.