Clutch fluid is always dirty!

[gtrboyy]

Fluid will still go grotty with bigger reservor,braided line & bleeder kit....it will just work heaps better & be million times easier/nicer to bleed clutch fluid at home every 6 months or pedal gets spongey & fluid blackens.

I do the syringe trick too...suck it out & refill...still goes black/grotty rather quickly but atleast pedal feels better!!!

 

[vc commodore]

Sounds like a logical design... with no brakes you shouldn't drive so it then good that you can't change gears to get out of neutral

One is taught to slow down in a manual, use gears.....With no clutch, that makes it difficult (not impossible, but we won't go there )

Honestly I think the design is crap at best...Then again, the car was originally designed and built in France, so I'll say no more...

I have thought about how to incorporate another sort of clutch design, but it has been put in the one day basket....

 

[Wreck3d]

Brakes and clutches don’t cycle fluid (ABS internals excluded).... they just don’t work that way.

They work on the principle that the fluid is incompressible. Any force applied to the pedal by your foot is passed to the mater cylinder piston mechanically. The piston puts pressure on the fluid which can’t compress so the pressure is passed to the slave cylinder piston. The slave cylinder piston then pushes onto the clutch forks mechanically.... Any movement of fluid is just a back and forth that accommodates the piston movements within the master and slave cylinder bores.

The only thing that goes through the fluid is pressure and the fluid doesn’t really move, say for a back and forth column movement. The fluid effectively just sits in the pipework being put under pressure and getting hot and bothered if pipe work is too close to any heat source (exhaust pipes).

The only way to fully flush brake or clutch fluid is to open the slave cylinder nipple and either suck fluid out from the slave cylinder or blow fluid out via pressurising the master cylinder reservoi.

Flushing just the master cylinder reservoir will make things look clean but it can’t really do much fot the fluid in the lines or the slave cylinder

Don’t know, must be something odd with these commodores as I’ve never had brake fluid go dark in such a manner...

THIS IS ABSOLUTELY 100% INCORRECT! Sorry guys know its an oldy but man just wanted to clear this one up.

Yes the clutch fluid does in fact 'CYCLE' through the system. This is CLEARLY evident by the black material in the fluid alone! That's exactly why people do the easy reservoir routine. Also, hotter fluid would move in place of cooler fluid? Then there's the whole hydraulic motion from master n slave pumping fluid?
But incase you need more as I'm no hydraulics specialist:

"When the clutch pedal is released, the pressure plate diaphragm spring force, moves the throwout bearing (3) and slave cylinder sleeve (2), back along the slave cylinder body guide (4), returning displaced fluid back to the master cylinder reservoir"
Straight from the GM VT-VZ Bible