Took the ST to a transmission shop I was referred to in order to have a tranny cooler installed in preparation for towing. When I picked it up they informed me thy didn't install it because there was a factory installed cooler already there. Perplexed, I left. I called my local Ford dealer and asked them to heck my VIN to see if it had the trailer package on it. They said that they couldn't tell from the records, but that all Explorers should have them. Then the light bulb lit. Apparently I wasn't clear that I wanted them to install an AUXILLIARY cooler. I am so frustrated! Going to a different shop tomorrow. Seriously though, shouldn't tranny guys know this?!?!??