I have heard of that routing procedure also. But since my car never sees cool/cold weather, just warm sunny days, I chose to route mine the way I did.
Larry I just checked my 2004 Express Van. The hot fluid enters the top port in the radiator and the cool fluid returns to the trans from the bottom port of the radiator. That is the way my car is also. o No:
Speaking of which.. I forgot that oil shield for the manifold at Bruno's. ou: If you go by there can you grab it for me? He doesn't know if he's going to Yardley's yet.
Reference material I knew I had this stashed somewhere. It took me a while to find. This chart deals with the line ports on the trans.