Thanks for the input Larry. I keep going back and forth on this. I have a small cooler to install, but can't make up my mind if it will do more harm than good. I keep thinking that the radiator trans cooler is there for a reason and since it has been by-passed, it needs to be replaced. The truck shifted fine all winter, even with some of the extreme cold we had this year. I don't want it to run too cold in the winter but also, not too hot in the summer. I do not tow as of yet, so that's not an issue. Any other input?