This is what I received in a fax today. Dodge/Cummins has issued a bulletin regarding oil filter usage and resultant engine failures. No engine will be warrantied if it is not using an approved oil filter such as Mopar, Fleetgard, Fleetgard Stratapore, or Purolator. Engine failures resulting from oil filter media coming apart and getting lodged in oil jets which help cool the underside of the pistons, will be the customers' responsibility. This stuff is happening. Funny enough, a 24 valve truck with 85,000 miles on it showed up just hours before we got the fax with a knock coming from the lower end of the block at cylinder #5. It had a NAPA filter on it. I've used Fleetgard filters since day one. I figured the cost as insurance against something bad happening from cheapo filters. Now the illusion of something like that happening is a reality. It must be happening in a decent number for Dodge to issue a bulletin on it.