Review on Hayden Automotive 401 Ultra-Cool Tube and Fin Transmission Cooler: Superior Cooling Performance for Optimal Transmission Function by Bill Wasson

No leaks, pretty easy to install. Not as easy as the instructions suggest, but that's because, as my wife says, I'm anal. The instructions say to install the heatsink after the heatsink, but common sense and other users suggest it should be before the heatsink. In this way, the transmission heat is dissipated before it puts a greater strain on the cooler and the cooler can bring the cold ATF up to operating temperature. It will be a few months before I tow my trailer again and put that load on the transmission. I will update this review in time if there are any problems. At the moment we can assume that everything is fine.