valvoline max life atf

Is there any reason that type f would make the A-518 perform any different then type f makes the A-727 perform? i know from expiernce that type f works well in the A-727s and the main difference between the 2 transmissions is the A-518 obviously has the overdrive unit on the back and the valvle bodys arfe set up a little different, but other then that they virtually have and use the same internal parts. With that being said i dont see why type f would make the A-518 perform any different then it makes the A-727s perform?