Date:         Tue, 27 Apr 2004 08:37:42 -0700
Reply-To:     gary hradek <hradek@YAHOO.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         gary hradek <hradek@YAHOO.COM>
Subject:      Re: coolant system trivia
Comments: To: John Rodgers <jh_rodgers@bellsouth.net>
In-Reply-To:  <408E6520.2020108@bellsouth.net>
Content-Type: text/plain; charset=us-ascii

John,
    If you look at the reason that the coolant is
anticorrosive is it because of the glycol replacing
water or is it the presence of those perky additives?
I am thinking a good summer mixture would include a
10% antifreeze plus a can of waterpump lubricant and
anticorrosive additive?   Mixture would be discarded
at end of summer and replaced with the recover mixture
I am now running?   gary
--- John Rodgers <jh_rodgers@bellsouth.net> wrote:
> Gary, like most things, water vs "coolant" is a
> trade off. Water of
> itself is one of the most corrosive elements  on the
> planet. So running
> it alone cold create problems, even though it may
> cool a bit better. The
> corrosion inhibitors in the antifreeze help with
> this. It's a realtively
> small sacrifice. If your system is in good shape,
> the additives to the
> water (anti-freeze) will be of little consequence,
> and the added
> protections well worth it.
>
> John Rodgers
> 88 GL driver
>
> gary hradek wrote:
>
> >I have been dealing with a conditon that I believe
> to
> >be a plugged radiator.   I have ruled out most
> other
> >cheaper fixes.   Over the past week I have isolated
> >the radiator at the point of the rear most end of
> the
> >big pipes and plugged them with corks and soaked
> the
> >isolated system with 0.2M citric acid for a week.
> >Flushing the system with hot water under house
> >pressure gave a flow rate about 6 gallons per
> second.
> >The first flush was very black and showed evidence
> of
> >bits of aluminum from what I am hoping to be some
> >after market sealer rather than the radiator
> itself.
> >After flushing the system I filled with the orange
> >stuff.   What I find intersting about the vanagon
> >coolant system is that the flow rate for water
> alone
> >is much faster than with antifreeze added.   This
> is
> >reflected well by the (temperature at idle as seen
> by
> >the gauge) TAI.
> >The TAI with water alone is much lower and at
> position
> >determined by the thermostat.   The low speed fan
> has
> >no problem keeping the engine temperature on the
> red
> >light dot even on a very hot day.   Once you add
> >antifreeze the TAI goes up above the light unless
> you
> >increase the rpm.   The TIA on a hot day(about 95)
> >will respond more slowly to the cooling affect of
> the
> >low speed fan.
> >   My question is would I be better off adding less
> >antifreeze and more water and perhaps adding some
> >after market corrosion inhibitor and water pump
> >lubricant?   thanks gary
> >
> >
> >
> >
> >__________________________________
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> >
> >
> >
>
>





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