Did a drain and refill on the tranny yesterday with a buddy.
The quantity replaced was slightly bigger than th 4 quarts often quoted.
Maybe because its a V8 tranny.
Did the gallon jug (4 qts) plus half of an additional bottle for a total of 4.5 qts.
There appeared to be no overfill...
It is a the V8 version of our transmissions though and I understand there are some minor difference to the V6 version, but 4.5 qts is what was used.