[Roadsters] Clutch Master Cylinder

[Jerry Krakauer]

Just to confuse things... DOT 5.1 unlike DOT 5 is a glycol ether - borate 
ester formula similar to and fully  compatible with DOT 3 & 4 but with the 
same higher wet and dry boiling points of the silicone based DOT 5.


Jerry Krakauer
SRL311 00099
----- Original Message ----- 
From: "Gary and Cindy Ault" <aultgc at att.net>
To: "Dewey Hahlbohm" <hahlbohmd at earthlink.net>; "Ed Mitchell" 
<edmitche at gmail.com>; <datsun-roadsters at autox.team.net>
Sent: Sunday, December 21, 2008 8:16 PM
Subject: Re: [Roadsters] Clutch Master Cylinder


> Ed,
>
> Dewey is correct.  DOT5 is silicone fluid.
>
> I have used DOT5 in my car (brakes and clutch) for ~25 years.  I ran 
> denatured alcohol through the system (from the master cylinder out, just 
> like bleeding the system) to flush the old DOT3 (petroleum-based) fluid, 
> then thoroughly flushed the system with DOT5 before buttoning it up.  No 
> leakage or hydraulic problems since.  I see no downside whatsoever.
>
> But, like Dewey suggested, you should probably check the discussions on 
> 311s.org to get a broader perspective.
>
> Gary