[KimnKim]

Thank you all. The indoor space I have enjoyed since purchasing the Newell expired today so had to move it to its winter storage arrangement. Before it left, I managed to locate one coolant tap (driver's side, top of engine at fan end) after receiving Wally's original advice on this matter and that was the solution to directing coolant forward on the bus so that my new hot water tank's heat exchanger would work...and it now does. My bud Jim and I looked over the entire engine, both sides and front to back at that time and could locate only the one manual valve. I'll have to have another close look when I get the coach back.

Thanks again, all, for the enlightenment.