[Spridgets] What fluid for clutch master cylinder?

[WeslakeMonza1330 at aol.com]

I have a great deal of technical data on silicone fluid that I've never  
shared.  None of it is positive and all of it relates to a non US  
manufacturer of silicone fluid.  Let the list know what AP say.
 
 
In a message dated 15/10/2011 23:52:11 GMT Daylight Time,  
grday at btinternet.com writes:

Hi Wes,
 
Whilst you are probably right it is a question that must be put to AP, I  
wouldn't want to change their wording or put words in their mouth.  I'll  ask 
them.
 
Guy R Day
 
 
----- Original Message -----  
From: _WeslakeMonza1330 at aol.com_ (mailto:WeslakeMonza1330 at aol.com)  
To: _grday at btinternet.com_ (mailto:grday at btinternet.com)  
Cc: _spridgets at autox.team.net_ (mailto:spridgets at autox.team.net)  
Sent: Saturday, October 15, 2011 5:58 PM
Subject: Re: [Spridgets] What fluid for clutch master  cylinder?




Do you suppose AP would guarantee their parts when used with a type of  
brake fluid they don't recommend you use?  AP's racing division make  brake 
fluids with a higher boiling point than DOT 5 so I guess they don't see  a need 
to make a silicone brake fluid.
 
I think the previous comments from the list make clear why it's not  
suitable for race use.
 
I don't manufacture or sell brake fluid and no-one gives me it free so I  
don't have an axe to grind.
 
If people want to use silicone brake fluid, being a produce the  
manufacture of the parts it is going to be used with don't recommmend, that's  up to 
them.
 
Regards
 
Weslake-Monza 1330
 
 
In a message dated 14/10/2011 21:57:39 GMT Daylight Time,  
grday at btinternet.com writes:

Hi Wes,
AP products do NOT RECOMMEND their parts to be used with silicone  fluid.  
I haven't seen anything about a guarantee rejection.  It  is also noted they 
do not make or supply a DOT 5 fluid.
 
_http://www.apracing.com/info/info.asp?section=Additional%2Fhealth+%26+Safet
y+Information_88_ 
(http://www.apracing.com/info/info.asp?section=Additional/health+&+Safety+Information_88)   
I've had a good trawl around the net for both DOT 5  manufacturers and with 
brake seal manufacturers and I've started  getting replies from their 
technical bods.
SO FAR there the same two camps that are here on the Spridget (et  al) 
sites.  
Those who DON'T supply it say it is it is a product that is not  fit for 
use. 
Those who DO make it and / or sell it say it is the best thing since  
sliced bread!  
One I have got back says its properties make it unsuitable for race use  
but doesn't say what these negative properties are.
A couple of manufacturers say the product has improved since they  started 
manufacturing it but haven't said why.  Only one has firmly  emphasised the 
need to have new seals AND to flush the pipes out with THEIR  cleaning fluid 
before use.
There has been no replies from seal manufacturers as yet and the  change 
over of rubber types for seals could be playing a part in this.
 
As far as I am concerned we are back in the trenches, there are both  for 
and against camps, all have their own axe to grind.
 
Guy R Day