"Scotty" wrote in message
. ..
"Scout" wrote in message
. ..
How many here have a hot water heater that works with the
engine's coolant system as a heat source?

I do, but I don't drink the hot water. Would washing dishes
and showering with it be a problem? If there were a leak,
wouldn't you soon discover it when your engine water gets
low?

Scotty,
It's like having a non-smoking section in a one room house.
If something were to leak into the hot water, it's in your fresh water
system.