F Ford2.7 Joined Aug 26, 2020 Messages 13 Location Prince Edward Island, Canada Feb 10, 2026 #1 Is Motorcraft 5w30 synthetic a good shear stable oil?
K kschachn Joined Dec 26, 2005 Messages 34,567 Location Upper Midwest Feb 10, 2026 #2 Sure. But that has a lot more to do with the engine, has this particular engine shown a tendency to mechanically shear the VII? Most engines do not.
Sure. But that has a lot more to do with the engine, has this particular engine shown a tendency to mechanically shear the VII? Most engines do not.
