[C320-list] Engine Winterization

[Richard Grunt]

The new antifreeze for the internal engine system is ethylene glycol based,
but has been changed from the green color to an orange (Dexacool from
Prestone) which could easily be confused with the non-toxic polyprolylene
based pink stuff. The toxic stuff goes in the internal system, if its orange
its supposed to be good for 5 years.  It comes pre-mixed with water 50-50,
which is how it is supposed to be used, and how I bought mine. I spoke with
Mack-Boring, Yanmar distributor for the east coast, and they recommended it
with careful flushing. It does not mix with the old green stuff, they will
sludge if allowed to mix, so if doing a change over you must flush the green
stuff several times and try and get it out of the overflow and the hot water
heater. There were several postings on the technique about two months ago.

The non-toxic polypropylene comes in at least three flavors as was just
mentioned in the last day or two. The pink is definitely for the fresh water
tanks, unless you need below -25 degree protection, and then god bless you!
The purple has rust inhibitors, so I would not use it in the fresh water
system, but is what I use in my raw water engine and muffler. Wouldn't want
to drink it, but not toxic to the environment. 

I hope this may help clear up some of the confusion.  I notice that the
salespeople are not very helpful, and the directions on the bottles
breakdown since they don't address the marine engine raw water use.  I had
to go to West Marine for the purple one with the rust inhibitor. 

-----Original Message-----
From: C320-List-bounces at catalina320.com
[mailto:C320-List-bounces at catalina320.com] On Behalf Of James R. Harrison
Sent: Friday, November 18, 2005 11:08 AM
To: C320-List
Subject: Re: [C320-list] Engine Winterization

Our new boat (hull #855 w/Yanmar 3GM30F) was commissioned and delivered
(10/2001) with pink antifreeze in the closed system by our Catalina dealer,
Tidewater Marina in Havre de Grace, MD. We
were advised to continue using it at a new owners' seminar. We have not had
any problems using it. Perhaps it depends on the engine?

Jim Harrison
"Painkiller", Catalina 320, #855
Middle River, Sue Creek, Baltimore Yacht Club

Fred Bruegmann wrote:

> Pink stuff is used routinely to winterize raw water cooled blocks,  it
> just isn't suitable for use as coolant in a fresh water (closed cooling)
> engine.  You really shouldn't use automotive antifreeze as its toxic and
> gets pumped into the water when the boat is first started after launch
> in the spring.
>
> Fred
>
> T. Scott Thompson wrote:
>
> >1.  Pink stuff is fine for raw water side / winterization.  Not suitable
for use as engine coolant or to winterize the block.
> >
> >2.  Yes, although you can replace it with pink stuff instead.  Stuff the
intake hose in a jug or two and run the engine briefly to do this.  Do that
anyhow to winterize the heat exchanger.
> >
> >3.  Will fill itself in the spring!  Provided you open the seacock! Don't
forget.
> >
> >Sent from my BlackBerry wireless handheld.
> >
> >-----Original Message-----
> >From: BAdams3491 at aol.com
> >Date: Thu, 17 Nov 2005 15:50:56
> >To:C320-List at catalina320.com
> >Subject: [C320-list] Engine Winterization
> >
> >Two Questions:
> >
> >Nigel Calder says to run the same 'pink' stuff thru the engine to
winterize
> >it that we run thru the water system.  The label on the container says
"Not
> >for use in engines."  What does everybody else do?
> >
> >Does the water in the aqua muffler need to be drained?  If so, when
starting
> >the engine in the spring, will it fill back up by itself or does it  need
to
> >be refilled?
> >
> >Okay, three questions.
> >
> >Thanks,
> >Bert
> >At Ease
> >#442
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>
> --
> Fred Bruegmann
> Staff Technical Analyst
> St. Joseph Technology Center
> Whirlpool Corporation
> St. Joseph, MI 49085
> Phone: (269) 923-3751
> Fax: (269) 923-6117
> Email: bruegf at sjtc.whirlpool.com
>
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