Okay, I'm really confused. I got a maintenance book with my new truck that has schedule A and B. A says 7500 miles between oil changes and B says 3750. On a Cummins site I saw 7500 and 15000 intervals based on driving/towing/etc. Did I get a gas engine book with mine or does DC want me to follow A and B in this book?
Thanks for the help!!!
Thanks for the help!!!