Those are my thoughts as well ,BUT, this is for a '66 XKE and the XKE
guys are dead set against silicone because of the vacuum assist in
the system, they frequently diagnose power booster failure by the
smoke exiting the exhaust and apparently, when silicone brake fluid
goes through the combustion process they believe it forms silicone
dioxide and it eats the rings/bores very quickly whereas traditional
fluid is partially combusted with no other ill effects.
Lester
>
> From: GUY DAY [mailto:grday@btinternet.com]
> Sent: Sunday, July 19, 2009 4:06 AM
> To: corvallis@peoplepc.com
> Subject: Re: [Spridgets] Racer type question..
>
> I'm with Bill below but I would add one of the reasons for any water
> build
> up (It comes IN the fluid hydroscopically) is not changing the fluid
> every
> couple of years. Old fluid is old because it has absorbed airborne
> moisture
>
> until it concentrates sufficiently to distil from the fluid as
> puddles in
> the line. The moisture content turning to a gas by heating is the
> reason
> for true brake fade - as opposed to burning the braking material.
> I don't particularly want to open up another 'can of worms' but IF
> you are
> having a new braking system (that is everything in the brake system)
> and one
>
> that is not contaminated with ordinary braking fluid it is a good
> time to
> change over to silicon fluid. If it is just new calipers and
> nothing else
> don't do it. If the seals have been lubricated with ordinary fluid
> prior to
>
> assembly, don't do it.
>
> Guy R Day
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