Of those of you that already have a transmission cooler and are in colder climate. Do you find that the transmission takes longer to warm up? You could notice it by the torque converter not locking up as quick as it normally does and rougher shifting.

I will be putting a transmission cooler shortly and considering putting a "Thermostatic Control Valve". B&M Racing has one, it is suppose to bypass the transmission cooler when the ATF is below 180F.

Thermostatic Control Valve full description

This week, it was -5F for a few days and would think it would take longer for the ATF to come up to working temperature with a transmission cooler. For that reason, I am seriously considering this control valve.

What do you think?