From: Ryan M Gill (rmgill@mindspring.com)
Date: Tue Apr 09 2002 - 10:46:39 PDT
At 12:52 PM -0400 4/9/02, Recovry4x4@aol.com wrote:
>If and when you drain fluid completely, factor in a thorough flush. Mixing of
>DOT 3 and DOT 5 will eventually have a very very negative effect. Brakes are
>a no short cut deal when talking of a single cylinder master cylinder on a
>13000# vehicle. Denatured alcohol or copious amounts of the desired brake
>fluid should be used for the flush. Personally, if I flushed my system
>either to change types of fluid or because of unknown fluid, I would push no
>less than 1/2 gallon of my fluid of choice before I would refill and bleed
>the system. You just can't be too careful when fooling with this
>stuff.....Kenny
FYI there is a DOT 5.1 (poly glycol ether based) that has the
properties of DOT 5 (silicone) with compatibility with DOT 3 and 4
(also poly glycol ether based but with lower boiling points).
According to the Vintage triumph Register's, DOT 3 has issues with
natural rubber seals and will eat them.
http://www.vtr.org/maintain/brake-fluids.html
Further details on types of Brake Fluid and the differences between
what the Euro's call DOT 5 and what the us calls DOT 5.1 or DOT 5.
http://www.belray.com/consumer/Q&A%20pages/q&abf.html
http://www.rpmnet.com/techart/fluid.shtml
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