Mich.,

I have another very good reason for running the engine. When you want
heat out of the "RED DOT HEATER"

I found my my engine run at a fast idle on a quart of fuel per hour.
That is less diesel than the heater.

When I winter sail, I keep the Pilothouse warm this way. Also, as long
as it's running, I'll drop it in gear and Motor sail.

Ole Thom