You can plumb in auxiliary suctions that will let you draw glycol straight
out of the jug.  If you haul the boat you can stuff a tygon hose up the
through hull and beer bong the glycol into the engine.  Or you can try the
seaflush.  I have one and it works, though it might be a bit over priced.
I like using the shop vac to blow the water out.  That may actually be
sufficient.   I am cautious though and carefully consider the possibility
of stagnant loops of water.  So, despite "blowing out"  the engine, I also
run glycol.  The nice thing is that I don't have to worry as much about the
water diluting the glycol.  It takes way less glycol to provide freeze
protection.

http://www.seaflush.com/sea-flush-1/

Josh Muckley
S/V Sea Hawk
1989 C&C 37+
Solomons, MD

On Oct 10, 2016 9:50 PM, "RANDY via CnC-List" <cnc-list@cnc-list.com> wrote:

> My first haul-out with my 30-1 (purchased in January) is coming up in a
> few weeks, sadly. The PO advised me to just run antifreeze through the
> raw-water cooling system until it comes out the exhaust.  My main question
> is how to get the antifreeze into the raw water intake.  I've seen a gadget
> made from a toilet plunger with a garden hose plumbed into the rubber cone,
> that can be held over the raw water intake with the other end of the hose
> in a bucket of antifreeze.  Any other recommended techniques?  Any other
> general tips on properly winterizing an A4?
>
> Thanks,
> Randy
>
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