Always use Castrol, which is hard to find in my area. Have a bad habit of
catching it in a jar and letting it settle and reusing it in an emergency (like
out of fluid and the parts store has no more until next month) but this muck is
to thick. I wonder if I should flush the system and try again? Or will I just
get the same muck.
Mike R
Lawrie Alexander wrote:
> Reference Max's last comment, below...............if, indeed the M/C was
> replaced recently but the wrong fluid was used, the seals could well be
> going bad already and causing the black muck to appear. It is imperative to
> use Castrol GT/LMA brake fluid with LBC hydraulic systems! Use of any
> American brake fluid will cause the seals to go bad very quickly. If you
> don't believe me, take a new seal from a rebuild kit and put it in a jar
> with some American brake fluid and watch what happens!
>
> BTW, I'm talking regular fluid, not silicone fluid. As far as I have been
> able to determine, silicone fluid of any manufacture does not harm the
> rubber - although other strange maladies have been attributed to systems
> filled with silicone fluid.
>
> Lawrie
> British Sportscar Center
> -----Original Message-----
> From: Max Heim <mvheim@studiolimage.com>
> Cc: MG List <mgs@autox.team.net>
> Date: Friday, July 16, 1999 10:42 AM
> Subject: Re: [MGC Brakes]
>
> >Mike Razor had this to say:
> >
> >>...MGC brakes are in pretty good shape, except now I am getting some black
> >stuff
> >>in the MC. My guess is that a brake hose is giving up the ghost. I have
> the
> >>replacement hoses, just have not had time to get them on...
> >
> >Hmmm, I would think "black stuff" in the master cylinder more likely
> >indicates deterioration of the MC seals (wouldn't think fluid from all
> >the way down at the hoses could make its way back up into the master
> >cylinder reservoir). But then, didn't you recently replace the MC? Double
> >"hmmmmm"...
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