I am not a expert but we use napa filters for 23 years granted on passenger vechicles an never had any problems beside the normal things no threads torn rubber gaskets things like that. Im not buy any means protecting any filter i think there all about the same the differences are too small to really get uptight about . They didnt say wix filer is poor wix makes napa filters. Most of the filter above are auto filters they have to deal with exstream heat and a lot of neglect in respect of regular oil filter changes. Were not beating our bikes like the average joe beats there car. A lot of cars are using low pressure oil pumps with out problems. I even own one. I am not a know it all but oil has came a long way in past years. I Just think were beating a dead horse. Buy what is easy to find, spin that baby on an go have a goood time riding