[C320-list] Winterization Plumbing on my C320

[Joe M]

I do the opposite of many here.

I buy 20 gallons of rv antifreeze a year at about $3 per gallon. I pump out
the cold side of both tanks, drain the hot side. Then the first few gallons
tries to charge the hot water tank, running a few gallons into each tank,
run all faucets hot and then cold putting out the pink , then drain the hot
water heater again draining the pink, taking no chances. Easy enough to
flush out in spring and flushing through a shot glass of bleach and water
anyway, system is always fresh.

I also have a bucket to put in cockpit with valve, running that to raw
water pump, running a couple buckets of freshwater running the engine on
the hard, then running 5 gallons of rv a/f through engine.

The last couple gallons of a/f gets dumped in the toilet and pumped into
holding tank with a bottle of the usual holding tank treatment.

2002 C320 #902

On Tue, Oct 12, 2021 at 6:39 PM Angus Henderson <rathlyn1 at gmail.com> wrote:

> Hi Ken. My boat is also in Midland at Wye Marina. I am all winterized now
> so can’t be much help as a physical mentor but do much the same as Kim
> described.  Avoiding plumbing a/f in the system such helps the water taste
> in the spring. I would only add to make sure you void water from the pump
> casing itself as it will freeze and crack it. Where is your boat in
> Midland.
> Gus
>
> Sent from my iPhone
>
> > On Oct 12, 2021, at 6:09 PM, Kim Chapman <kim.chapman at sympatico.ca>
> wrote:
> >
> >    I use a shop vac to suck all the water out. You could use the
> "output"
> >   air of the shop vac but these devices suck much better than they blow.
> >
> >   The best place to connect the shop vac to the plumbing is at the pump.
> >   Disconnect both the in and out lines from the pump. Using duct tape,
> >   connect the shop vac to the input line. Turn on the shop vac. You will
> >   be sucking water from the water-tank lines. It is best to do one at a
> >   time so use the valves appropriately. When both tanks are done connect
> >   the shop vac to the lines going to the galley, head, and cockpit
> >   shower. Turn on the shop vac. Again, best to do one line at a time. Go
> >   to each faucet, open the cold water first. You will know when all of
> >   the water is sucked out of the line by listening to the air being drawn
> >   into the faucet. If you hear some gurgling then there is still water in
> >   the line. When you hear a clean whoosh of air then that line is done.
> >   Turn off the cold water and open the hot. Continue till all lines are
> >   done.
> >
> >   Using this method I have never put anti-freeze in my plumbing !
> >
> >   Cheers....
> >
> >   Kim Chapman
> >   C320 #416
> >   No Problem
> >   C400 #249
> >   Quiescence
> >
> >     ---------- Original Message ----------
> >     From: Ken McCrimmon <kenmccrimmon at hotmail.com>
> >     Date: October 12, 2021 at 5:21 PM
> >     Good Afternoon
> >     I am looking to learn from somebody who does their own winterization
> >     of the plumbing systems on their C320.
> >     My home is north of Toronto and my boat is in Midland.
> >     I would be interested in helping somebody who would not mind me
> >     learning from them.
> >     Willing to do the heavy lifting
> >     Ken
>