Dual Stock transmission coolers??? (6.4 Powerstroke)

Is anybody running dual stock transmission coolers? A second one would fit very nicely under the first and for me they are cheap and easy to come by, but I'm wondering would there be drops in temps? And if there is drops with I have issues daily driving in the winter? My transmission is getting warm when I'm towing at slower speeded and the TQ isn't locked, so I need to come up with a way to resolve this issue.

No expert, but I believe that the transmission has a thermostat/bypass to hold fluid until it's up to temperature before entering the cooling loop. Again, I'm not certain, but believe this to be the case. That would mean that the extra cooling capacity for the summer should not hurt in the winter.

That what I was thinking too but wasn't sure, transmission runs at 170° on 90% of the time DD so I always figured it had a thermostat