Re: Silicone brake fluid

[John Cooper <Jacques.Noir>]

At 03:59 07/27/96 +0000, you wrote:
>Mike wrote:
>
><<
>I thought I had seen something a while back about using silicone brake
>fluid. However, searching the archives, I could find nothing. Is it ok
>to use Silicone brake fluid in a 91 200 Q or will it damage the ABS?
>>>
>
>>From what I understand, DO NOT USE DOT 5 (SILICONE) BRAKE FLUID IN AUDI ABS
>BRAKE SYSTEMS!!!!  (Sorry to shout but this is extremely important.)  Dot 5
>WILL damage critical seals within the system over time and you WILL be
>replacing the master/slave cylinder, not to mention some extremely
>high-dollar ABS component. ONLY use DOT 4 unless otherwise specified.  Check
>your owner's guide.

Please be more specific.  Silicone brake fluid is used in many and is
compatible with many brakes systems.  What do you mean that some seals will
get damaged?  Silicone is NOT a mineral based fluid, as it sounds like you
might think.  Silicone Dot 5 fluid is about as inert as you can get.  If you
have more specific information as to what will happen, I would be very
interested to know, and what specific materials used in automotive braking
systems it affects. Thanks,
Coop

>Chris
>1988 90
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