I have never had the system freeze, and all I've ever done is drain
everything.  Since the trap is open to the air in two directions (I leave
the drain cap off in winter), and holds little water, it is ok -- or at
least mine has never cracked.  The beast does stay in the garage most of
the time in winter, but I drive it occasionally, and in below freezing
temperatures.

On Fri, Oct 14, 2016 at 4:59 PM, Richard Golen <rgolen@hotmail.com> wrote:

> I also use RV antifreeze.  I run it through the faucet and fill up the
> drain pipe from the sink with it (just make sure the drain plug is in place
> and tight).
>
> Sent from my iPad
>
> > On Oct 14, 2016, at 19:55, Stuart MacMillan <stuartmacm@GMAIL.COM>
> wrote:
> >
> > RV antifreeze is probably cheaper than vodka, but don't drink the
> leftovers.  Any parts store will have it.  If you have the OEM Delta Six
> faucet, you need to get antifreeze into it or it will freeze and break.
> There shouldn't be any water in the trap, or at least not enough to break
> it when frozen.
> >
> > Tie a ribbon on the faucet to remind yourself to drain and flush the
> system in the spring.
> >
> > Stuart
> >
> > -----Original Message-----
> > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
> Of Eric Caron
> > Sent: Friday, October 14, 2016 4:08 PM
> > To: vanagon@GERRY.VANAGON.COM
> > Subject: Winterizing the water system
> >
> > Hi folks,
> >
> >        It is expected to be below freezing in the north east tonight. I
> have drained my water tank, drain the hoses, and also drain the plastic
> thing that connects the city and tank water. I have also try to get water
> out of the trap in the sink.
> >
> > I have had failures two springs now.  first the sink trap and then the
> plastic connector for city and on board water.  I hope I’m free of
> surprises this spring.
> >
> > Any tips on winterizing the water system?
> >
> > Eric Caron
> > 85 GL Auto Westfalia
>