Consuming a bit of oil every couple weeks, car runs great or at least seems to, no blue smoke that I notice, no visible leaks. Figure it's burning off somewhere, or from me pushing it harder. Anyways my question is, I've read about guys switching older SN95's at higher mileage (100-120K) to 10w40 up from 5w30. Would this be ok? Spring is here, summer coming. I'm using standard 5w30 right now, apparantly, most of these guys got oil consumption to go down considerably or go away for good by switching. A new oil change with 6 quarts of 10W40 and a Motorcraft Fuel Filter good?
