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Re: 86 5K cosmetics: Black trim, rubber seals, lower body rust

-----Original Message-----
From: Michael O Muller <mullerm@engin.umich.edu>
To: Fred Munro <munrof@isys.ca>
Cc: quattro@coimbra.ans.net <quattro@coimbra.ans.net>
Date: Thursday, December 03, 1998 3:55 PM
Subject: Re: 86 5K cosmetics: Black trim, rubber seals, lower body rust

>>>Underbody rust...
>> Mike;
>>     You will get the best result if you remove the rust, prime, paint,
>> then apply the rubberized undercoat. The OEM Audi undercoat is superb
>> stuff - I have not found anything as good aftermarket.
>> HTH
>> Fred Munro
>> '91 200q  262k km
>Fred, and others:
>How is the OEM Audi undercoat applied? Spray or brush? If spray, is this
>with airbrush/sprayer, or is it in an aerosol can? Is this the same
>undercoat as is used on the remainder of the underbody?
>86 5Ks  170K miles

    These underbody coatings are sprayed on with a Shutz gun - a rather
crude air-powered device designed to spray viscous coatings. If you look
carefully at the Audi coatings, you will find a very tough, thick whitish
rubber coating covered with a thinner cosmetic black coating. I have never
been able to find anything as tough as the white rubber coating. I usually
replace worn areas with an aftermarket rubberized chip-guard coating sprayed
from an aerosol can. This stuff usually lasts a year or two and has to be