The transmission still warmed up just as quickly during the cold weather thanks to the SuperCooler's "bypass" feature:

http://www.bmracing.com/products/acc...perCooler.html

It costs more than most other coolers, but to me it's worth every penny of it IMO, especially when the transmission costs thousands, while this cooler only really cost me about $75 including a quart of Honda ATF-Z1, and a 10ft length of 3/8" transmission hose (cooler came with 4ft already).