Originally Posted by USN_S14

you sir are retarted oil does NOT break down it just gets dirty, i work for orielly auto parts and have been taught this stuff its dirty from the carbon and suet deposits on your cylinder walls in your motor. the piston goes up oil covers the walls and the deposits and the piston rings scrap the oil back down. also recycled oil is just used oil that has been filtered and has had detergints and additives added to it. syntetic doesnt break down either and its also dirty because the oil filter can only filter so much till it cant and the microns can pass through. also avoid fram filters would you want to protect your engine with cardboard, i sure dont thats why i use WIX or Mobile 1 oil filters.