[Galaxy]

The reason you are seeing such cool tranny temps is because you have the temp probe in the pan...arguably the coolest fluid in the system. Does not really give you a good indicator of the tranny temp and far from the hottest temps the fluid will see. Majority of people place the probe in the cooler line that runs FROM the tranny TO the cooler. This is the hottest temp the fluid will see in its route through the tranny, and the reason it's monitored here is because it's the hottest. I'm not saying this is happening to you but theoretically you could be cooking the crap out of your fluid and if your radiator/cooler is efficient enough, it wold be that cool by the time it got back to the pan.