Different strokes- - - - - -etc.! If somebody as big as Ford dropped water heating on their 3.8L V6 and went back to exhaust heat, I'm sure their engineers would be happy to hire some hotrodder to show them how to make it work!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!