Quote Originally Posted by 34_40 View Post
It cannot "get airbound".. above the fluid reservoir, it's all air other than the valve body. After the pump raises the fluid pressure it sends a portion of the fluid over to the cooler and then it's back to the reservoir. All the older trannies had vented to the atmosphere cases. Heat will kill an automatic. No matter how you plumb it, you gain some cooling, if you're that worried about it add an external cooler after the radiator cooler.
I'm not worried about cooling at all. I was just wondering if there was a "correct" way to run the lines.