[Spridgets] What fluid for clutch master cylinder?

[Woerpel]

This may seem a dumb question but here goes.
When you mean you change your brake fluid, do mean completely purge the 
system or just run a couple of pints through the M/C whilst going from 
wheel cylinder to wheel cylinder until you see new fluid?
Folks would really hate to start getting air out of the M/C and clutch 
slave everytime.

DW



On 10/16/2011 11:39 AM, WeslakeMonza1330 at aol.com wrote:
> 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