[s-cars] thermostat

[Odyrestorations at aol.com]

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