This is a Donaldson DBL7349 Filter that was on a 2003 Dodge Ram 3500 Cummins 5.9 engine, OCI was about 7 miles and about 2 engine hours. I used this filter with Rotella T4 15w40 and 2 cans of Liqui Moly Engine flush for about 20 minutes. I am restoring the mentioned truck. The filter looks to have blackened thoroughly, a few metal flakes were found, and a few soot chunk floater in the can (not pictured). I put a new same filter on and will run it for about a year.