Re: [FOT] Modern brake fluid/rebuilt Triumph components

[Hugh Barber <tr6nut@sbcglobal.net>]

Randall Young wrote:
> BTW, the Wikipedia article is flawed as well.  Code of Federal Regulations
> Title 49, Chapter 5, FMVSS 571.116 defines performance standards for brake
> fluid, but not what chemicals go in them.  Except for "DOT 5", where it says
> only that it must be at least 70% "a diorgano polysiloxane".
>   

I had heard that while DOT 3 & 4 were polyethylene glycol based, some of 
the new DOT 5.1 fluids were borate ester based..........