I have used Dot 5 silicone brake fluid for many years and have never had any
problems with it.
Nor have I found any corrosion while rebuilding the components- Iâ??ve decided
that itâ??s the perfect solution for a car that sits for months during the
winter, and it wonâ??t remove my paint.
Iâ??ve read about â??compressibilityâ??, but I think thatâ??s just the effect
of not completely removing all the air from the system, which can be time
Now for the BUTâ?¦for the first time, Iâ??ve read something about silicone
fluid thatâ??s given me pause.
If you have a servo and it develops a leak, you definitely donâ??t want your
engine sucking this stuff through the manifold. Iâ??m not a chemist, but
apparently what is left behind when Dot 5 is burned can be abrasive and
damaging to engine components. Iâ??m sure there are some of you who will
understand the molecular structure of the silicone fluid, and be able to
explain this properlyâ?¦but this has got me thinking.
I have a PBR replacement servo which has been very reliable, but Iâ??m thinking
about looking for a rebuild kit soon.
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