I am just a little gun shy on tranny’s right now,  a c6 on my other mustang just had to be rebuilt 
. I think it overheated going down I95, was clipping along pretty good, looked in my rear mirror and it looked like someone did a nascar burn out- white smoke everywhere. After inspection I drove the rest of the way home at a reduced throttle 
. Never was right after that. Didn’t have a temp gauge, shouldn’t need it with a c6!  I do now