Rich,

Here's a thought... Did you change your water pump?  One of the best vacuums
in the system is the vortex of the water pump which also happens to be where
the pulley shaft goes through the pump casing.  The faster you go the better
the vacuum.  On a hot day you "may" see signs of the shaft leaking with slow
in town driving while at high speeds the vacuum is equal to or exceeds the
system pressure meaning that it will suck air in.

Jere

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com]On Behalf
Of Rico Sapolich
Sent: Wednesday, April 10, 2002 8:38 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Broken New Engine, What is fair resolution?

In a message dated 4/10/02 11:06:24 AM, VW85Westy@AOL.COM writes:

<< Air enters cooling system
during highway driving. >>

This is impossible because while driving, the coolant is at a positive gage
pressure, even with a leak.  Have the coolant checked for combustion
byproducts.  If there is any present, then you have a combustion leak of
some
sort.  The real problem is getting someone to pay for it.  You certainly
have
already made your contribution in that department.  One thing which puzzles
me: did not $600-worth of diagnostics reveal anything of substance?

Rich