Stebbins,

The green stuff is probably the phosphate anti-freeze; depending on how hard
your water is you may not want to use it.  The Orange stuff is the phosphate
free stuff about the same as the blue Bosch stuff (only more orange).  As
far as the molecule size....? I don't really know you'd have to ask a some
one into chemistry but I believe orange H2O and green H2O should be about
the same size of H2O and the phosphates in the green stuff would make it a
bit more lumpy.  IMHO use the orange and fix the leaks.

Jere
90 GL
88 GL

 -----Original Message-----
From:   Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com]  On Behalf Of
Malcolm Stebbins
Sent:   Monday, September 03, 2001 9:21 AM
To:     vanagon@GERRY.VANAGON.COM
Subject:        Oranage coolant leak?

When I bought my 91 vanagon, it had the green coolant
in it and the van had NO coolant leaking problems.
About 3 months ago I put in the (expensive) VW Orange
Coolant and I have had no end of coolant leaking out of
many hose clamps etc.  Even the heads are weeping
orange coolant and it is a new (50,000 kms) engine.

My (trusted) mechanic says that orange coolant has
"smaller molecules", or some such, and that if I go back
to green coolant the heads will not weep and I will have
fewer other coolant problems.

Do any of you guys have any input on this?  Malcolm
Stebbins