Dont just put 12 qts in it.....put about 8 qts...start it up in neutral....and add fluid to get to the full mark....
always depends on size of converter...pan...cooler lines...
What about Dextron 3
A few years back the drag racers were using a John Deere Fluid. Google I guess.
Type F from Wally World! It works and it is cheap! I buy it in gallon jugs when it is available.
70aarcuda's favorite place to get Trans fluid!