Searching, as I did earlier today, turns up quite a bit. Basically an Air to Oil cooler, like the one RoadRunner has, will keep the temperature of the ATX oil down to about 150F. The CD4E is prone to overheating on the freeway, which will quickly break down the oil and then the parts
I've already burned up one ATX, and I'm looking to do whatever I need to to protect the one I have now.