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Re: [T3] Brake bleeding question


On 24 Mar 2002, at 23:19, Mark Healey wrote:

> That is why I figured that if you ran the hose to the resovoir the the
> bubbles would float up once they reached the end of the hose and any
> back flow from releasing would pull in fluid.

Right, but just dumping it in a partly filled bottle of waste fluid will do the 
same thing, while not returning dirty fluid to the system.

I may not have made a good enough point about old brake fluid. Standard 
DoT-3 & 4 brake fluids all absorb water out of the air. This reduces their 
boiling point and makes them somewhat corrosive. Unless you have changed 
over to Silicone brake fluid, you need to flush your system with fresh fluid 
every few years. Every year is probably too often, but every 5 years is 
definitely not often enough. 

Since NOBODY does this, most cars end up with rusty hydraulic brake parts 
and you end up putting lots of time and/or money in them after 8-10 years. 
That's why I have gone to silicone fluid exclusively in my old cars. This has 
completely eliminated my brake rebuild problems.

So don't reuse your old DoT-3 or 4 brake fluid.

-
Jim Adney
jadney@vwtype3.org
Madison, WI 53711-3054
USA

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