Diesel Oil.....
2006 Cummins 5.9 - 150k miles. I know nothing about this 5.9 that I just bought, except it really runs good. I've always used Delo 400 in diesel engines, what do you prefer and why? Thanks
Forum Discussion
Gulfcoast wrote:
I checked with a Cummins dealer that has a good reputation around here and he said to use the Cummins recommended Valvoline 15w40 and I bought all Fleetguard filters.
NUTTIN wrong with that!
