Personaly I think the differance is splitting hairs (except price) between the fancy expensive glass filters and the paper ones (not counting FRAM). With any decent filter and reasonable maintnance most engines will last longer than the car any more, how much longer do you need the engine to last? We use a generic filter from O'reilly that is a re-painted wix that costs $1.66 it is way cheaper than the glass ones and the engines last longer than the cars.