I do both I look around for good oil but at a good price, I use a rico filter and seems to be doing fine, ATM im trying Castrol Oil but im thinking about changing that as I have heard some bad reports about the whole magnateck thing so ill be once again looking for another oil, but why not look around for that bargan some of us live our lives on every doller we have, You finally have the car you dreamed about but you still are on the same crappy pay. When I have time in my Busy life ill buy difrent filters and cut them up and have a look but right now who cares because does anybody on the fourms have proof or a dead engine that has been killed from what you would call a crap oil filter?