Recent content by ATX_Megacab

Originally Posted By: Ramblejam You don't need to do anything; the Cummins ISB engine test (ASTM D7484) is a part of CK-4. In other words, any CK-4 oil has been validated against the specialized needs of your engine architecture. Thanks. I'm still trying to get a handle on oil specs, does the...

Is there a new Cummins or Mopar spec number for older RAM 6.7L trucks now that CK-4 oils are out? I don't know what to look for in the new regime for my 2012 truck. Should I just look for the old MS-10902 or CES-20081 specs?