Malcolm,

I have had the same experience with orange anti freeze and have gone back to
the green as well.  I have had heads off of quite a few Vanagons and have
never seen any damage where the anti freeze touches the head no matter what
color it was.  I believe the head corrosion is caused by condensation
forming between the rubber head gasket & the head.  It forms, it sits there,
and it corrodes.  Some engines do not display much corrosion if any.  Maybe
because they were always used for long journeys that caused the engine heat
to dissipate the condensation.

Walt Spak
Pittsburgh PA
wnsopc3@3rdm.net

----- Original Message -----
From: "Malcolm Stebbins" <Malcolm.Stebbins@MSVU.CA>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Thursday, March 21, 2002 10:22 AM
Subject: Re: bubbles in coolant

| This may sound  goofy, but with Green coolant I have NO leaks, with the VW
orange
| coolant, I get seepage at most joints and even around the head gaskets.
So I
| switched back to Green coolant and I change it every year.  Try that?????
|
| You say that:  "I took the cap off and could see the air bubbles coming
through out
| the hose up the tank at idle."   I do not see BUBBLES, just see coolant
streaming in
| the (left) expansion/reservoir tank.  m2cw  Malcolm