Silicon brake/clutch fluid

[cerb`era]

Has anyone used silicon brake/clutch fluid in their CLUTCH? It says that it has double the boiling point of DOT4 and never needs changing - Perfect!

>>> Edited by cerb`era on Thursday 3rd March 14:50

[Plotloss]

It also eats all the rubber seals it come into contact with...

So unless you are changing all the seals in the braking system its to be avoided IMHO.

Castrol SRF, not cheap, but good.

[shpub]

Use Dot 5.1 better than 4.0 at around the same price. Compatible fluid unlike 5.0.
Avoid the silicone stuff...

[redleicester]

I'm using 5.1, and I've had all the rubber hoses off and replaced with steel ones. Pedal is much harder to push, but christ almighty does she stop!

[GreenV8S]

'Never needs changing' isn't necessarily a good thing. It doesn't need changing because it doesn't absorb water. This means that when water does get into the brake system (and it will), it stays as drops of water rather than being disolved into the rest of the brake fluid. Water makes cr@p brake fluid and has a low boiling point (obviously) so this is bad news. In some respects, the fact that ordinary brake fluid does absorb water is a good thing.

[Plotloss]

Thats what is so good about the SRF

Its 'wet boiling point' is over 500 degrees and not much lower than its 'dry boiling point'

[cerb`era]

I`ve been in touch with the Importers of a popular American made DOT5(silicon) brake fluid, and asked about seal errosion and they said;-

"Total rubbish, silicon brake fluid does not harm any seals, and is fully compatable with any DOT4 system. The only thing to avoid are mineral oil systems such as Citroen and Rolls Royce use. Yes,it would be ideal for a TVR Cerbera clutch as it will never need changing again!"

This is completly opposed to the comments on the forum so far, so who is right????

[falcemob]

[quote=cerb`era]I`ve been in touch with the Importers of a popular American made DOT5(silicon) brake fluid, and asked about seal errosion and they said;-

"Total rubbish, silicon brake fluid does not harm any seals, and is fully compatable with any DOT4 system. The only thing to avoid are mineral oil systems such as Citroen and Rolls Royce use. Yes,it would be ideal for a TVR Cerbera clutch as it will never need changing again!"

This is completly opposed to the comments on the forum so far, so who is right???? [/quote]

Are you sure you are not confusing silicon with synthetic? Silicon fluid should not be mixed with any other type. Dot5.1 and other non-silicon synthetics are miscible with lower rated fluids except the mineral based fluids that are used in some Citroens and Rollers.
Castrol SRF shouldn't be mixed with any other fluids as they will cause contamination and lower the boiling point and at over £40 per litre is an expensive waste, it is also recomended that SRF is changed every 18 months.
BTW, why would you worry about boiling points in the clutch?

>> Edited by falcemob on Friday 4th March 23:05