You're very correct, most people think 'fluid' means a liquid, but as you
say - anything that flows- which includes air, exhaust etc. 
When a car won't run correctly, or at all, "It's just a blockage or leakage
( or more than one ) of fluids or electrons."
  Fluids include gas, oil, coolant, exhaust, air, vacuum, etc.....
If you think of it hard enough, every vehicular mechanical failure is either
a blockage or leakage of fluids or electrons : flat tire, failed wheel
bearing, blown engine of course, ..and all the electrical/electronic stuff
of course. 
 So next time she craps out, or stumbles, or won't start - it's a "blockage
or leakage of fluids or electrons."
  I will have to admit thought, worn tire tread and worn brake pads don't
seem to fit this rule. 
Scott
www.turbovans.com 

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Miguel Pacheco
Sent: Saturday, November 17, 2007 9:12 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Leaking Head perment fix ??

Mike, you mean liquids cannot be compressed. A fluid is something that
flows. For example, natural gas is a fluid and can be compressed.
Miguel