Allan,

I have always read that distilled is preferred but I know I seldom have ever
done it. The theory being less mineral build up is my guess. Sincere there
would not be that much fresh water introduced into the system I doubt there
would be that much mineral build up! I'm guessing most distilled would also
have impurities that would conflict with most coolants and reduce corrosion.

Shawn

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Allan Streib
Sent: Wednesday, January 30, 2008 8:29 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: New Car Dealers And Parts Prices-a service advisors

On Jan 30, 2008, at 7:39 PM, Vdub Guy wrote:

> I plan to flush my coolant system soon and replace it with VW blue
> coolant and distilled water.

why distilled?  Is that what VW calls for?  Or is your local water really
extremely hard?

Allan