Oliver Closehauf
Senior Member
- Joined
- Nov 21, 2020
- Posts
- 718
- Reaction score
- 458
- Location
- Cincinnati
- Ram Year
- 2005 Laramie
- Engine
- Cummins 5.9
Last year after I changed my oil, my first Cummins oil change, the oil was totally black immediately. I'm used to clean fresh oil staying clean for at least a little while. Once I started it and let it run and then turned it off to check the level, it looked as black as the stuff that came out when I changed it.
I know the oil is supposed to end up black because it has to keep a certain amount of ash in suspension, but shouldn't I expect to have cleanish oil at least for a few days? If the ash is in suspension, and I just drained it, I wouldn't expect what's clinging to be enough to make 3 gallons of fresh oil turn black in 5 minutes.
I know the oil is supposed to end up black because it has to keep a certain amount of ash in suspension, but shouldn't I expect to have cleanish oil at least for a few days? If the ash is in suspension, and I just drained it, I wouldn't expect what's clinging to be enough to make 3 gallons of fresh oil turn black in 5 minutes.