[shall36]

The selection part is an interesting story...with 2 components. First, I spoke with John at IPT about cooler selection and he was the one that recommended the large cooler. I was a bit concerned about overcooling, but the design of the Tru-Cool unit (as per John and the Tru-Cool literature) is such that it is self-regulating. We'll see how things. If I end up with overcooling, I'll have to install an external thermal by-pass regulator. The second part, the towing part, is that we plan to buy a large TT, hence the absolute need for a cooler. I have an 8x10 trailer that I use on a regular basis, but it's usually not loaded to more than 2,500# or so. Never had a problem...of course, I am using Amsoil synthetic ATF and I think that the Toyota Type IV is a synthetic fluid, too. When I have serviced the trans, the fluid has always been red and clean.

We'll see what happens.