quote:
Originally posted by Last_Z:
Call me stupid, but I just can't leave oil in my car for 15k miles, much less 25k like AMSOIL claims. Why would I want that crap running through the engine for such a long time? I don't care if it is suspended in the oil, the filter will begin to slow oil pressure at some point (since it has collected so much stuff); but whatever doesn't get caught by the filter goes right back to the engine (in between bearings, cylinders, camshafts, etc) over and over and over.