I'd have trouble taking advice from a guy that doesn't know what he's talking about. He seemed to be confused as to why Mobil 1 is rated SM/CF. He knew what the SM stood for but not the CF. He explained that synthetic oil must have a different rating system. CF is a diesel oil specification. It has nothing to do with being synthetic oil. He was kinda off on few other things too but what's the point.
Serving Greenville, Winterville and Ayden NC