ok so i was told from a friend of mine about AMS MOTOR OIL. it was said that it is guaranteed up to 25,xxx miles witout changing the oil. but i would have to get a special oil filter too with it. its 10.50 a quart and the oil filter is $25 so i looked at it as a pretty good deal. even if i dun drive 25,xxx miles a year i could just change it once a year anyways. just wanted to kno if anybody here has heard about this kind of oil or if anyone here even uses it. any feedback and comments will be appreciated. THANKS!