What transmission fluid to use: 1985 Commander 337, 7.4L In-line in-board drive The manual states the following: “Use only automatic transmission fluid (ATF). All automatic transmissions fluids currently used in passenger cars are suitable for use in transmission.“ So, what fluids were they using in 1985 ? One guy on K dock told me use type A. The marina sold me Dexron III (3). Thanks 1985 Commander 337; 7.4L; In-line in-board drive