min. temp for distilled water in a warm engine?

[0-60n4]

I have RMI-25 and distilled water with 160 degree thermostat in a heated garage. What would be the minimum outside temperature that would be safe to start her in the garage then take it out and drive it? Will the water stay warm enough to prevent freezing in the radiator if the outside temperature is above, say 20 degrees? Or would the air flowing through the radiator cause it to freeze if the thermostat closed?

 

[achalmersman]

No it won't freeze if it's running but don't shut it off in 0 degree weather long. Get it back inside your heated garage.

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