Re: DOT 3/4/5

From: Marty Galyean (marty@heavyreckoning.com)
Date: Sun May 07 2006 - 05:23:20 PDT


noel shelley wrote:

>Dear All,
> The reason racers use DOT 5 is that when DOT3/4 gets hot IF
>there is absorbed moisture it will boil causing a steam bubble and TOTAL
>brake failure . On cooling the fluid reabsorbs the moisture and the cause of
>the failure is a "mystery "!
>I know because a customer of mine had this happen , and I was able to prove
>to him what had happened . A dragging caliper caused the fluid ( moisture)
>to boil after about 15 miles, and a loss of brake at the roundabout
>frightened him ---- less. It is also the cause of many so called
>unexplained accidents where the driver claims the brakes failed but on
>inspection all works fine !!!!!!!!
>IF you live in a mountain region change your fluid every 3 years or change
>to DOT 5.
>
>
In the case of the baja cutting brake, the amount of water was
apparently so high that the steam bubble would push the slave and the
brake would lock, *not* cause a loss of brakes, rather too much brake.

Marty



This archive was generated by hypermail 2.1.4 : Tue Jul 18 2006 - 21:45:37 PDT