Re-using Castrol LMA is a bad idea! Non-silicone brake fluid is very
hygroscopic and absorbs moisture from the air very rapidly. As someone else
suggested in a separate post, that may be contributing to your problem.
I'd be inclined to buy a big bottle of LMA, drain your present system, then
keep pumping and flushing and bleeding until you have clear fluid in the
reservoir and coming out at all four bleed nipples. Then keep an eye on the
reservoir. If the fluid starts to go black again within a few months, then
either your seals or your hoses are deteriorating.
Lawrie
-----Original Message-----
From: Mike Razor <mrazor@kih.net>
To: Lawrie Alexander <Lawrie@britcars.com>
Cc: Max Heim <mvheim@studiolimage.com>; MG List <mgs@autox.team.net>
Date: Saturday, July 17, 1999 8:33 AM
Subject: Re: [MGC Brakes]
>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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