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
Cummins12V98 wrote:I think they have good products he uses it in everything and his shelves in the garage look like a store for their products.
"Neighbor uses Amsoil in his old 5,9 Cummins Diesel and changes it once a year regradless of miles."
I do the same with my 99 Tahoe with 235k, runs great. I use the AMZ/OIL 15-40 Diesel Marine.
