Re: Winterizing on the hard
Absolutely must run antifreeze through the fresh water cooling system. Not a hard job. With my boat I just disconnect the intake hose from the through hull and suck up a few gallons until the exhaust runs a pretty pink. Same with any water lines in the boat. Drain you fresh water supply put a couple of gallons in and pump through. Don't forget the holding tank, head and bildge lines as well. Prevention is cheaper that fixing a cracked anything. Again not a hard job and doesn't really take that long. Use the same antifreeze used to winter an RVs systems.