I have a 99 mod and the filter canister is just fine easy on /off and has ports on top for bleed or gages and is easy to clean . Why then did DC or Cummins change to the plastic top hard to clean and no bleed ports ? could be the Bean counters (corp motto Cheaper is better for the masses. Even if don't work to well as long as its cheaper? Just a thought . Ron Bissett in LOUISVILLE KY:{ :{ :{ :{ :--)