I didnt want to ***** on anyone elses post so i made my own.
Anyway i was jus reading that doing a auto trany flush and changing the fluid is bad! My question is if u are gonna add a tranny cooler....it says u will lose some fluid and have to add some the next day, Does the same concept apply here(with it being bad haveing new fluid)? or does it not because it is not a complete flush of the tranny?

Im pretty sure i answered my own question in the last sentence but i figgure i would ask anyway

 

If all your're adding is a tranny cooler, than you just have to add for added displacement. As far as changing at high mileage, I've done mine 2wice since I've owned it, and it's fine.