does my auto tranny already have an cooler?
 

I was looking under the hood and saw a rubber hose coming out of the auto tranny and going to the radiator? Does the radiator also serve as an auto tranny cooler? The hose had "Bridgestone ATF" on it. Could someone explain?

Yes, the radiator has a seperate side built in to serve as the tranny cooler. However, you tranny fluid will only be as cool as the coolant in the radiator. I have installed a cooler on my car with a fan.....Kaleb