Ok, I have to ask.. Why is there so much bashing about the cleanable oil filters? I have searched the oil filter section and it mainly boils down to the micron rating.. or the lack there of. Now granted there are some that list 40um as there absolute. I have found that some oem filters list 40um as there speck (motercraft, bosch, and most cartridge filters to name a few). I have also found that some of the reuseable filters list ratings that most of us prefer/can get without bypass filtration. 20-25um absolute with 1um nominal, which is the range of just about the rest of the filter we use. So why group all reusable filters together? There clearly some that are as good or better then what we buy off the shelf. Then there are some that are just that "gravel traps". So rather then call them all "gravel traps" why not do some homework before passing judgement? Before I get flamed on the cost and the inconvience of cleaning, I'm disscusing solely on the biggest aruement against them....Filtration.