bronze turbine
Active Member
I have a service manual for a 1968 Chrysler and it says to use the Dexron ATF in the 3-spd manual transmission. I have a 4-spd manual in my '68 300 (not original to the car). I want to top it off, but I don't know what's already in it. If it's filled with ATF would topping it off with 85w90 gear lube cause any problems? In other words, would the the ATF and the gear lube mix without any issues? Or, should I top it off with ATF? If I were to drain the whole thing, what should I fill it with?