Re: [FWDLK] Brake fluid

[jrawa@xxxxxxx]

this is interesting....  any explanation as to why?  i have the fluid i previously mentioned- silicone hydraulic/DOT5 replacement in heavy equipment-  i several 57/8 and 51 with pressure switch... havent had a failed switch yet- but will be something to keep an eye on i suppose...

perhaps due to the better pressure transfer- under extended hard braking it may collapse the diaphragm effect of the switch mechanism...

the other running silicone are already converted to dual masters/discs, or were factory equipped with mechanical switches...

 

and somehow out of a fleet of 38 cars i can tell you what fluid is in which and when i put it in! 

-----Original Message-----
From: Anthony Rinaldi <awrdoc@xxxxxxxxx>
To: L-FORWARDLOOK@xxxxxxxxxxxxx
Sent: Sat, Nov 21, 2009 6:43 pm
Subject: Re: [FWDLK] Brake fluid

Ron is right that silicone BF does eat up pressure brake light switches.

If you decide to use silicone then install a mechanical BL switch behind the 
brake petal. 

Tony Rinaldi

Ron Waters wrote: 
>  One of the issues with Silicon brake fluid is that it has been 
> known to cause the hydraulic brake switch on the master cylinder to fail 
> prematurely. Failure of this component may result in you being rear ended. Not 

> pretty. A number of folks using Dot 5 have installed a mechanical backup 
switch 
> on the brake pedal to ensure that the lights will go on when the pedal is 
> depressed. 
>    
>  My other problem with Silicon is its incompatibility with Dot 
> 3 or 4. It's easy to forget that one of your cars has Dot 5 and accidently 
> add  some Dot 3 or 4. When realizing your mistake, you would have to 
> completely flush out your system. A pain in the butt. 
>    
>  My solution is to use Castrol LMA. LMA stands for Low Moisture 
> Activity. I've had it in my 58 Plymouth for over three years, without any 
> leakage or pulling due to a wheel cylinder freezing up. It's also compatible 
> with Dot 3 or 4. 
>    
>  Ron 
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