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
Does anyone know what the suggested replacement miles is based on? Highway? Hauling/towing? City? I'd think that use would play a big factor. My truck is used almost exclusively for towing.
