I bought a winterizing kit with a 5 gallon jug and a hose that attaches to the earmuffs. I just get a good supply of antifreeze at West Marine when they put it on sale. Then when I get home after a trip I'll run it to warm it, since you have to flush the salt water out anyway, and then shut it down and put the muffs on the antifreeze hose and start it up and let it run until I get antifreeze coming out of the exhaust. Takes a couple of gallons or so. I only go every few weeks or so and go through 15 or 20 gallons every winter, but it is cheap insurance to make sure everything stays in one piece! Until the weather really gets cold, I will just drain out the water so the first frost doesn't catch me off guard. Luckily we don't get a real deep freeze right off the bat like in some places!!