[s-cars] thermostat

[Paul Gailus]

Distilled water alone is certainly more corrosive than normal
tap water that has some mineral content. However, once you
add antifreeze with significant levels of corrosion inhibitors
this mineral content becomes less relevant.
Many manufacturers of antifreeze specifically recommend the
use of distilled or deionized water.

Paul

----- Original Message -----
From: <Odyrestorations at aol.com>
To: <bobs6 at msn.com>; <airbil at gmail.com>; <tlarson at tds.net>
Cc: <s-car-list at audifans.com>
Sent: Saturday, December 04, 2004 10:00 PM
Subject: Re: [s-cars] thermostat


>
> If you really want to be an anal audi driver, use distilled H2O when
> refilling.
> I don't have any specific data on this, but I know this chemical engineer
who
> is an antique car collector. He says never to put distilled water into a
> cooling system as the distilled water has virtually no mineral content and
tends
> to seek a mineral balance by taking from the surface of the cooling system
> walls. I've stayed away from distilled water since then.
>
> Highly mineralized water can certainly have the opposite effect, by
leaving
> deposits in the form of scale in the cooling system.
>
> In 90 year old cooling systems, we generally use tap water, never well
water,
> and a corrosion inhibiter/wetting agent such as No-Rosion. It would be
nice
> to think my S6 will last this long....
>
> Tom Rasmussen
> 95 S6
> MTM 1+
> Odyssey Restorations, Inc.
> Mpls, MN
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