One thing we're missing here is the effect of torque converter slippage, this contribute to heating the trans above engine coolant temp. So in traffic it will heat up about 10-30* higher on some occasions. My drive home is 45 mph stop n go, to a 50 mph 2 mile run. By the time I get to the freeway I'm back down to engine coolant temp. I do notice that start and stop heats up my trans more. But cruising I'm at least as low as engine temp or lower. I would assume the site has wiring schems on how to wire the fans on from a switch.
Jeff
