Mopar drag race engineers use to recommend in the old drag race seminars running 1 quart of gear oil in drag race only cars, Dana 60 or 8 3/4 work
They swore that was all that was needed for lubrication, that the factory ran the additional gear oil in them for noise control shruggy


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)