Sounds like a bit of air in the system to me. Also, with the blackish cloud
could be the old dried brake fluid coming out? It was suggested to me once to
use acetone on JUST the lines to flush them out, but you have to have a
compressor to blow the lines clear before reconnecting everything.
Sadly, I don't have experience with the silicone fluid though... sounds
intriguing though!
Eric
>>
> Hi Everyone,
>
> When I brought my car out of mothballs after not being
> driven for 20 years, the hydraulic system was bone dry
> and all master and slave cylinders were completely
> frozen. I replaced all cylinders and flex lines and
> since it was all new except for the hard lines, which
> have been dry for a long time, I put DOT 5 silicone
> fluid in it.
>
> I have heard that DOT 5 does not work well for racing
> and that you have to be careful to bleed thoroughly as
> water won't absorb into the fluid, but will collect in
> the low spots. I have had the car on the road now for
> about 18 months with no brake problems. There could
> be a "hint" of sponginess but I can't remember what
> the brakes used to feel like 22 years ago! It
> definitely is not as firm as the power assisted brakes
> of my newer cars.
>
> I just noticed the other day, a little "cloudiness"
> and some black debris in the master cylinders so I
> sucked it out with a baster and refilled with the same
> brand of Silicone fluid that I had left over when I
> first put it in.
>
> Does anyone have experience using silicone break
> fluid?
>
> Any problems?
>
> Can you substitute with any brand of DOT 5 silicone
> fluid? I am running low on the brand I had used and
> can't seem to find that brand in the local parts
> stores.
>
> Thanks everyone!
>
> Scott Occhiuto.
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