| Hi Godders,
I got ****ed-off with the clutch fluid going black, and set about sorting it - without success.
However, I can list some things that are not the cause of it:
1. Standard slave cylinder - I've replaced this twice with aftermarket cylinders, very carefully installed - no improvement.
2. Master cylinder reservoir - swapped this for a different make - no joy.
3. Pipe from reservoir to master cylinder - replaced with aftermarket fuel line - not guilty
4. Bearing in clutch pressure plate, seized causing push-rod to spin - nope.
5. Gunge from chain getting through rubber seal/gaiter thingy - replaced rubber whatsit, cleaned chain scrupulously, lubed chain very lightly, replaced fr sprcket, cleaned drive shaft area carefully - fluid black within 80 miles.
It has been suggested that the piston within the master cylinder is either not anodized and/or made from a low grade alloy that oxidises or reacts with the hydraulic fluid, causing it to darken. Seems a bit daft for Brembo to make such an error - but these are Italians we're talking about.
I find that after about 6 months/2,000 miles, the darkened fluid becomes susceptible to heat and clutch pressure fades - needing a system flush and bleed.
Otherwise, it is not a problem.
Still bugs me though. Better get a radial master cylinder.
Spinoli  |