Register a free account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!
This question may have been beaten to death, but I need some info please.
I just had my oil changed on the Cummins turbo diesel 6.7 litre. I used the Valvoline premium blue that Cummins recommends, to my surprise after the tech installed the oil and having me start the engine and shut it down...