[Mgs] brake fluid

Bob Donahue bobmgtd at comcast.net
Sun Oct 28 13:47:49 MDT 2012

I keep hearing two different opinions about Dot 5.
Dot 5 is terrible because it does not mix with water.
Dot 5 is wonderful because it does not mix with water.

Take your pick!

BTW, I've had good luck with Dot 5 in my TD over the past 10 years without 

Bob Donahue (Still Stuck in the '50s)
Email - bobmgtd at comcast.net
Cars:       52 MGTD - #17639
               71 MGB - #GHN5UB254361
Member:  NEMGTR #11470
               NAMGBR # 7-3336
               Hoosier MGB Club
               Olde Octagons of Indiana

----- Original Message ----- 
From: "Hans Duinhoven" <h.duinhoven at planet.nl>
To: <mgbob at juno.com>; <paulhunt73 at virginmedia.com>
Cc: <mgs at autox.team.net>
Sent: Sunday, October 28, 2012 1:11 PM
Subject: Re: [Mgs] brake fluid

>I use Dot 5 since 2000 and found, that regular replacement must be done,
> eventhough Dot 5 does not mix with water.
> Water vapour still comes into the system, so finally can create rust into
> the cylinder bores.
> So I had to replace the clutch MC, as the cylinder bore was pitted.
> Cheers,
> Hans
> 71 BGT
> -----Oorspronkelijk bericht-----
> Van: mgs-bounces at autox.team.net [mailto:mgs-bounces at autox.team.net] Namens
> mgbob at juno.com
> Verzonden: vrijdag 26 oktober 2012 17:32
> Aan: paulhunt73 at virginmedia.com
> CC: mgs at autox.team.net
> Onderwerp: Re: [Mgs] brake fluid
>   Silicone separates quite visibly.
> Bob
> ---------- Original Message ----------
> From: "PaulHunt73" <paulhunt73 at virginmedia.com>
> To: "Max Heim" <mvheim at sonic.net>, "MG List" <mgs at autox.team.net>
> Subject: Re: [Mgs] brake fluid
> Date: Fri, 26 Oct 2012 09:41:07 +0100
> DOT3, 4 and 5.1 aka Super DOT4 are all glycol based and hence compatible, 
> so
> you can just flush the old out when filling with the new. DOT5 is the odd
> one out being silicone and the two types must not be mixed, switching
> between these is not a trivial task.  I've never been able to understand 
> why
> a development of glycol was given the designation DOT5.1, implying it was 
> a
> development of silicone, and not DOT6.  Water mixes pretty-well instantly
> with glycol based, never had silicone to try.
> PaulH.
> _______________________________________________

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