Just curiouse as to what type of high milelage oil my pal who hadn't worked since 911 it seems like should run in his 327.I believe it has 300 plus miles on it and don't ask he can barely afford gas for it, little on rebuild it. I'm thinking it's valve guides and rings.He said it has 323,689 miles on it. It uses about a quart every 500 miles he said. Thanks there Bolters.