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@att.net>
To: "Dewey Hahlbohm" <hahlbohmd@earthlink.net>; "Ed Mitchell"
<edmitche@gmail.com>; <datsun-roadsters@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
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