Re: Wintering in potentially freezing conditions, watermaker?
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Thomas Peacock
Pretty sure the Starbrite is good. Main ingredient should be propylene glycol.
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For engine and gen, we would close the engine room through-hull, then run engine while pouring pink stuff through the sea chest until you could see it coming out the exhaust. Same for gen. I would not want to guarantee, but the engine room does stay a little warmer as it is lower, and derives “heat” from the cold Scottish water. Some people augment this with a 100 watt incandescent bulb (if you can find one). As I recall, to totally antifreeze the engines, watermaker, and fresh water system, you might go through ten gallons. Not sure about the water maker tube, we never did it, watermaker was already asleep with metabi and glycerine. Our manual says to use 10 liters chlorine free water, 100 grams metabi, and 2 liters glycerine ( which provides the antifreeze property). I don’t know if the glycerine can pass through the membrane, it is a very small molecule, kind of like water by structure (OH-OH-OH). If so, that would also protect the tube. Pretty sure propylene glycol will not pass through. Tom Peacock SM #240 Aletes Chesapeake Bay US
On Aug 8, 2019, at 6:49 AM, SY STELLA <stella@...> wrote:
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