Stop in for a cup of coffee

Ben Drinkin said
I have always put a transmission cooler inline before the radiator.

dukeboy_318 said
Wouldn’t that kind of defeat the purpose a bit?

Let’s say the transfluid leaving the trans is 205, goes thru a super efficient huge cooler and drops to 175. But then goes into the radiator where coolant is 195. Would that not heat the trans coolant BACK up from heat transfer?

It may not make much difference as it's a closed loop system... (now that you bring that up...)

Once it picks up heat going out of the trans, as long as you cool it before it does another 'lap' around before it goes back through the trans, it should still cool the trans...