Sebastien,

I have the same engine, and here are the steps I was taught:

   -    Purchase 1 gallons of "pink" (general with no corrosion inhibitors)
   and one gallon of "blue or purple" anti freeze with corrosion inhibitors.

   -    Find the "winterizing hose" and have it ready.
   -    Close the raw water thru hull in the engine compartment, and loosen
   the clamps on the hose at the thru hull.
   -    Remove the hose from the thru hull barb.  Attach the "winterizing
   hose", on the barb and place the other end in a 2 gallon bucket.
   -      Pour 1 gallon of pink antifreeze into the bucket.  Have ready the
   blue or purple.
   -    Start the engine, and monitor the antifreeze level in the bucket.
   -    Right when it is about to get to the bottom, add the entire gallon
   of blue or purple into the bucket.
   -    Allow the engine to digest all of it to the bottom of the bucket,
   and right before sucking air, shut down the engine.
   -    Replace the hoses and re-tighten the hose clamps.

I have someone else run the engine while I do the hose/bucket part. It
takes about a minute to run the stuff out of the bucket.  It isn't very
fast.


Pat


On Fri, Oct 19, 2012 at 10:53 AM, Sébastien Lemieux
<s.lemi...@umontreal.ca>wrote:

> I'll be winterizing my 2GM20F for the first time tomorrow (saturday) and
> would like some advices on the practical way to fill up the raw water
> circuit with antifreeze.  I plan on detaching the intake tube of the raw
> water circuit from the seacock and putting it in a bucket filled with
> antifreeze (I'm aiming for 2 gallons, is that enough?).  Then, I assume I
> need to start up the engine and wait until antifreeze comes out from the
> exhaust thruhull.
>
> Should I just crank up the engine (with decompression lever open)?  If I
> need to start the engine, how long should I expect to it?  Do you leave the
> tube in the bucket unattended while you stand near the control panel to
> stop the engine?
>
> Thanks in advance!
>
> Sébastien Lemieux
> Merlot X - C&C 30 mk2 1987
> Mooney Bay - Lake Champlain
>
>
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