New to the forum. Just want to thank members for the wealth of knowledge here. Just put about 1500 miles of heavy towing (10,000lbs) on my pickup after doing the 6.0L trans cooler upgrade. It dropped tranny temps about 30 deg on average and am amazed at how effective and easy this upgrade was. Also fortunate to have a buddy that works at a wrecker and got me one for $75, This site rocks! Thanks again guys.