Chevy or Ford?..... and None should have engine overheat, if the house is designed right. Problem arises when the GCVW is exceeded and Ford has a much higher limit than Chevy during those years. AS has been said, frills are more important than things like a transmission temp gauge and this is what usually overheats, no matter what your engine coolant might be doing. Next and if you're lucky, the engine will go into limp mode upon order from the ECM, just when you think you're doing fine and while climbing those 6% grades for 5 miles or so.
