Mark, on the '84s the high temp cutout is part of the wiring.  Works exactly
as the wiring diagram in Bentley.  I am using PG-based antifreeze, and I
know that it is curtting the surface tension some.  I will have to check the
numbers.

John
----- Original Message -----
From: "Mark B. Magee" <condor2@flash.net>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Monday, July 31, 2000 10:34 PM
Subject: Re: Using Vanagon AC

> John, Volks,
> What you say cannot be. In our now past 100+ heat that lasted nearly 3
weeks
> the high speed on my rad fan was kicking in quite often and would stay on
for
> entire trips around town (20 or more minutes). However the A/C continued
to
> throw ice cubes through out. I have no data that when the high speed fan
kicks
> on, the A/C compressor is disengaged. Yet I know it for sure isn't doing
it on
> my 90 Carat. (could this be diff for a 84 model?: I wouldn't think so)
> BTW, if anyone is fearing a hot rad system, use 100% distilled water with
Red
> Line Water Wetter (bought at performance shops). This stuff is phenomenal
and
> will lower radiator temps as much as 33 degrees.
> Regards
> Mark Magee                                                90 Carat
> Kemah TX USA
> John 14:6
>
> John Lauterbach wrote:
>
> > I have an '84.  With the Georgia heat, A/C is on all the time.  If your
> > cooling system is in good shape, the heat from the A/C will not cause
> > problems.  However, beware of the high temp coolant cut out.  When the
> > radiator fan need to go to high speed, it cuts off power to the A/C
> > compressor.  Stop and go driving with outside temps at 95F+ will cause
this
> > to happen.
> >
> > John Lauterbach
> > Macon, GA
> >
> > ----- Original Message -----
> > From: PSavage <psavage@saber.net>
> > To: <vanagon@GERRY.VANAGON.COM>
> > Sent: Sunday, July 30, 2000 11:29 AM
> > Subject: Using Vanagon AC
> >
> > > My '85 Westy had a brand new AC unit installed just before I bought
her
> > last
> > > fall.  I run it five minutes a week to keep it lubricated, but haven't
> > used
> > > it much for fear of overheating the engine.  Can anyone offer
guidelines
> > for
> > > AC use?  I'm heading into the Nevada desert end of August & might find
> > > myself tempted to reach for that Max Cool knob. Will I suffer a drop
in
> > > engine power & lowered mpg?
> > > Thanks!
> > > Phaedra
> > > '85 Westy-Wolf
> > > "Hester"