Jim, The slippery feel from Dot 3/4 brake fluid between your fingers could
come from the oils stripped from your skin as you perform the test. I have
not noticed any metal particles in my hydraulic systems after years of
service. Regards, Gary
----- Original Message -----
From: "Jim Blackwood" <jblackwood5@insightbb.com>
To: <tigers@autox.team.net>
Sent: Tuesday, April 08, 2003 7:01 PM
Subject: RE: Hydraulic fluids - getting your DOTs lined up.
> I too have run silicone fluid since about 1980, in the clutch system and
> a dual master cylinder brake system. This is on an MG rather than a
> Tiger and it uses steel cylinders and pistons. I have had to change out
> the master cylinders a couple of times over that period due to wear in
> the cylinder, all of them have needed changed probably twice and the
> brake cylinders may need it again before too long. The MG master has a
> long steel piston which rides against the bore causing wear. I did not
> disassemble the Weber, but suspect the bore and piston are isolated from
> each other by o-rings and seals so really, wear from metal to metal
> contact shouldn't be a problem. At any rate, following a 6 month
> swelling test with silicone (Weber says don't use it) with good results,
> I did a "feel" test as the wear issue had come up. The glycol based
> fluid certainly felt noticeably slipperier to me so that's what I put in
> it. And of course, it dripped all over the new paint.
>
> Jim
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