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Re: [Healeys] Silicone vs Glycol (natural or otherwise) brake fluid

To: Editorgary@aol.com
Subject: Re: [Healeys] Silicone vs Glycol (natural or otherwise) brake fluid
From: David Nock <healeydoc@sbcglobal.net>
Date: Wed, 9 Jun 2010 11:10:01 -0700
I have been using nothing but Castol GT LMA for ever. It will no  
damage the paint on the car if it is cleaned up right away especially  
if you any of the newer paints that are a base coat clear coat. It  
will take the normal paints that are used on suspension parts and  
other misc components like that.

My main issue is that the silicone fluid will retain air suspended in  
the system and it is very difficult to get a good solid pedal. This  
is most noticeable on a car with drum brakes.

Next the moisture that gets into the system is in the air and you  
cant avoid it getting into the system. Then it will go to the bottom  
of the system with either fluid. Then water in the system equals  
corrosion.

So what are we gaining.

This has been discussed so many times it will never come to a final  
decision. I just know what we do and have done for ever and i am not  
changing.

So now lets get into the formulation of the paint on the car and  
which is the best one to use. Or Engine oils i am sure that one would  
last for another week or so.




David Nock
British Car Specialists
Stockton Ca 95205
209-948-8767

www.britishcarspecialists.com
.
.

On Jun 8, 2010, at 10:04 PM, Editorgary@aol.com wrote:

> Sorry, I guess I wasn't paying attention and didn't realize it was  
> time for
> the annual British Car Argue About Brake Fluid Festival. -- what  
> must it be
> now, the 40th annual re-enactment of this ancient brawl?
>
> Fact 1: Neither glycol and silicone fluids, used separately, will  
> not harm
> modern synthetic rubber seals.
>
> Fact 2: Glycol is hygroscopic and therefore must be flushed and  
> replaced
> every two years.
>
> Fact 3: Silicone fluid won't harm paint; Glycol will.
>
> Fact 4: Glycol gives superior response because it doesn't compress  
> as much
> before pushing through the system.
>
> Fact 5: Never, ever mix glycol and silicone fluids in any amounts,  
> because
> they cancel out one another's additives and will cause the seals in  
> the
> system to fail.
>
> Conclusions: Use glycol in cars that are driven frequently, but be  
> very
> careful when you refill the system so you don't spill it on your  
> paint, and
> change it regularly. Use silicone in show cars that are driven less  
> hard and
> infrequently.
>
> And those were the same conclusions that I arrived at after  
> research 14
> years ago when i wrote my first article on brake fluids for British  
> Car
> Magazine, and no one has yet contradicted any of those facts,  
> except for the fools'
> chorus that is a traditional part of this festival, where they array
> themselves and sing antiphonally across the grease pit: "Silicone  
> fluid is bad"
> and from the other side, "Glycol Fluid is bad."
>
> Gary
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