Oil change interval?
Recently bought a used Ford Focus from the dealer. Re: the sticker on the windshield, I asked, "Do you use a 3000 or 5000 suggested oil change interval. He answered, they used 5000 for awhile but got ...
Forum Discussion
Consumer Reports did some research on this several years ago; the only real research I've ever seen. They dismantled the engines of New York taxis after various oil change intervals. Found no difference in wear; no support for frequent changes. They recommended- follow the manual.
