Actually, rust in an AC system is a common problem.  Especially if the system 
has been left open for any period of time.  Even an operational system will 
have a tendency to absorb moisture.  That is why a receiver/dryer is needed.

Dennis

-----Original Message-----
>From:	vanagon@lenti.med.umn.edu  On Behalf Of SyncroHead@aol.com
Sent:	Friday, August 08, 1997 12:56 AM
To:	Multiple recipients of list
Subject:	Re: a/c parts search

In a message dated 97-08-07 12:58:01 EDT, rkoller@helix.nih.gov writes:

> I've been told by my local VW dealer that my a/c system is contaminated
> with rust. They gave me a long expensive list of a/c parts and work that
I........

I've never heard of such a thing.  I'd suggest that you might get a second
opinion from an A/C specialist.

Good Luck,
Jim Davis