Engine Oil - Diesel Engines: Notes
WARNING: This page is about a different car, the 2011 RAM Pickup and 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
Use only Low Ash Diesel Engine Oil meeting standard MIL-2104C or API Classification CJ-4/SM (5.9L), or CJ-4 (6.7L), or higher that meets Cummins CES 20081 Standards.
Low ash diesel engine oil is REQUIRED for the 6.7L engine, use Mopar® MaxPro15W40 6700 Diesel DPF diesel engine oil, or equivalent.