I agree with Wittsend , Purolator has been making filters for over a hundred years , as for Fram i will never put one on any of my cars , why I said that is they are junk, I work on aircraft and every filter I take off I have to cut it open and check for metal or other not to be in there things , I have a tool to zip them open so by habit i do the same for all my cars and trucks , I have found the the metal crimp the hold the pleats together was not done right , yep it was open and the oil just was not being filtered because of it, I have found this not one time , not twice but tree times on my vehicles , one was on a fresh Overhaul on my V6 pinto , when you need it the most I just think of all the small trash that went straght to the bearings , I will only use ford ,wix or purolater , also found that aircraft filter Ch48108-8 made by champion works well , I change oil every 2500 miles , (oil is cheep and engine is not ) I maintan all of the them that way since new , no engine trouble , the tool to cut the filter open to check yours can be brought at aircraft spruce , or aircraft tool supply ,