Ok guys, new kid on the block and am confused by quality of fuel filters for the LLY. :help: From my reading of the post all "brands" fuel filter are mfg by Racor and guys are saying "no difference" (my interpretation of posts) so go for the cheapest. It would seem to me that while the container would/could be same/identical, the specs/design for the internal material would be different. Just read on the RV forum regarding diesel filters that CAT is the best and WIX is least efficient. Does anyone have information on the specs for the LLY/Duramax filters by brand. Appreciate any facutal data on the subject.