I agree.  The 50/50 mix is dictated by the varying conditions that Vanagons
will see.  Anti-Freeze by itelf is a lousy thermal conductor.  If cooling
efficiency is your goal, run straight H2O (theoretically, corrosion
resistance not considered!).  If you're in a cold climate move the mix
toward more anti-freeze since you're not worried about cooling efficiency.

Gary
----- Original Message -----
From: T Berk <tberk@MINDSPRING.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Wednesday, November 22, 2000 8:38 PM
Subject: Re: Antifreeze question

> Doug Alcock wrote:
> >
> > It's my understanding that we are only supposed to use a 50-50 water to
coolant
> > mix in our Wasserboxers. According to the back of the jug and my little
tester
> > dohickey ---- this resulting mix is good to -30 celsius or -22
fahrenheit. What
> > do listees in cold climes use?? Here in Toronto it did get down to -30
celsisu
> > last year --- but no colder ---- and I'm wondering if I should be
increasing my
> > mix to be on the safe side --- or is there a reason not to do this???
> >
> > Thanks,
> > Doug Alcock
> > '84 Westy
> > Toronto, Canada
>
> 70/30 anti to water in harsh conditions is OK, in Hotter weather you can
> get back to 50/50- the conductivity of the glycol is less than water so-
>
> Freezing? Add more coolant (Up to 70% depending)
>
> Hot out? Thin it back down to 50/50.
>
> hth,
> TBerk
>