I rebuilt the chassis and running gear on a 35 pickup a few years ago. The original trans, rear, and steering box fluid was whale oil based and compared to 75 year old whale oil 80-90 doesn't stink. As I understand it, the original Ford friction modifier that's now sold as the Ford Racing/Performance modifier has a whale oil component. It stinks enough for that to be true. I don't speak Jap car and don't know or care what they recommend, Honda also dragged their feet from 2004 until NHTSA held their feet to the fire in 2014 on the Takata airbag recall in direct violation of federal safety regs and that was OK. If Ford or GM had done that the CEO would be hanging in front of the courthouse.