Re: [MV] Re: Silicone Brake Fluid - PS

Alan Bowes (
Tue, 19 Oct 1999 11:26:56 -0600

I just wanted to add that all brake fluids are compressible to some degree, but
silicone fluid is several times more compressible than glycol fluids, especially as
temperature goes up. Some people have complained about a slightly spongy feel when
using silicone fluid, but that will depend a lot on the individual vehicle; more
specifically it will depend on the relative ratio of the master cylinder diameter
to the wheel cylinder diameter(s). The smaller the master cylinder diameter
relative to the wheel cylinder diameter(s), the more likely it is that you'll feel
some sponginess, especially if the brakes and fluid are hot. Naturally, if there
are any trapped bubbles, they will increase any sponginess.


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