Date: Wed, 29 Sep 1999 11:24:55 -0700
Reply-To: "Renouard, Robert" <Robert.Renouard@METROKC.GOV>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: "Renouard, Robert" <Robert.Renouard@METROKC.GOV>
Subject: Re: Head leaks & a GM mechanics suggestion.
Content-Type: text/plain
According to a master deisel mechanic In the trucking industry who was once
runner-up for "Detroit Deisel Mechanic of the Year", a lot of things have
been tried for solving the problem, with varying degrees of success. The
most successful, in his mind, for a cooling system is Nalcool additive. It
takes about 1/2 pint of Nalcool to a gallon of coolant to start, and 1/2
pint every 4 to 6 months as an additive. In deisel engines the higher
running temperature contributed to the electrolysis resulting in
"Cavitational Erosion" (pitting of the aluminum faces), The Nalcool
addative was used by fleets as a preventative measure.
Does anyone on this list know about Nalcool.
Let me know what you think or have heard.
> ----------
> From: Mark McCulley[SMTP:transporter99@HOTMAIL.COM]
> Reply To: Mark McCulley
> Sent: Wednesday, September 29, 1999 11:01 AM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: Head leaks & a GM mechanics suggestion.
>
> Sounds a lot like the Bars Leak formula--they both have nut shells. I've
> had
> success using AlumaSeal to seal some hairline cracks in my Vanagon heads.
> Been running this in my cooling system for 3 years now with no know
> detrimental effects.
>
> Mark McCulley
>
>
> >From: David Hayward <dhayward@ISLAND.NET>
> >Reply-To: David Hayward <dhayward@ISLAND.NET>
> >To: vanagon@GERRY.VANAGON.COM
> >Subject: Head leaks & a GM mechanics suggestion.
> >Date: Wed, 29 Sep 1999 10:09:01 -0700
> >
> >I was talking with a colleague of mine yesterday who is/was an
> experienced
> >GM mechanic. In discussing things VW and the headleaks that our beloved
> >wasser boxer's develop he mentioned a GM product that was commonly used
> in
> >the aluminum engines to deal with the "pitting" problems that those
> engines
> >were prone to.
> >The product is simply a GM COOLING SYSTEM SEAL TABS (part no. 1051687).
> The
> >make up (as shown on the back of the pkg) states it is made from GINGER,
> >ALMOND SHELL & BORIC ACID.
> >
> >Do any of you engine experts know anything of this product or have any
> >experience with it ? It sound to me like it could be a decent
> >"preventative"
> >to use annually in the system ?....what say ? I spoke to my (experienced)
> >VW
> >mechanic & he was unaware of the product. I'm going to take him some and
> >(maybe) start using them in between semi-annual coolant changes.
> >
> >Regards, David Hayward
> >
> >71 Ghia Convert
> >88 Westy Syncro
> >89 Caravelle Carat
> >92 Passat Syncro
>
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