2013 Auto Transmission Cooler?

[fucus]

Can anyone shed some light?

I have a 2013 focus with auto transmission, yes it clunks and jitters occasionally (all the usual suspects) but as I drive it everyday for work I have come to notice that it's purely heat related from my perspective (after half and hour the gremlins start and quicker on hotter days or if I drive it hard). Does anyone know if you can fit a bypass cooler to the auto transmission? I have searched high and low and found nothing but suggestions but no images or specs etc.

Much appreciated to any and all suggestions.