Re: inboards and freeze protection
If you are on the beach I would suggest you feed 50/50 antifreeze at the inlet stainer and through the salt water side of the block etc. Also buy one of those glass annti-freeze testers and check the fresh water side to make sure to antifreeze has not been diluted.
No advice if the boat is to remain in the water over the winter. Would just be to stress full for me.
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