[RKDinOKC]

My parents had one of the smaller Chrysler Le Barron wagons. It would overheat on a real hot day. When I drove it to GA when going thru the mountains between Knoxville and Chatanooga I had to turn the A/C and heat both on high so the AC would cool the heater water in order to keep it from overheating. No such issue driving it over the big hill called the Arbuckle Mtns.

Niece didn't have the issue until they ran it dry.