mikey k

Don't forget this fluid does have a finite shelf life.
It also absorbs moisture.
As Rick says there is some history of this.

chilled

Well it's replaced anyway.

Nick Graves

Chris & Mikey are both right;

You cannot boil it, but it does go off.

I've had it changed on all three cars, but they're about six/seven years old!

chrispayze

I remember on my Civic, changing the fluid wasn't actually part of the service schedule, but I changed it when I changed brake fluid (same fluid, see!).

Si2k

How easy is the clutch fluid to change?

I know on some hydraulic clutchs it can be a pain to get all the air out and they recommend using a vacuum source to draw the fresh fluid through.

mikey k

The S is one off those clutches that likes to make it difficult.
I've been read posts in the US on removing the clutch delay valve on +04 cars and a fair few struggle to bleed it properly

RedUn

The way I changed my fluid was basically to pump it out using clutch pedal but making sure the level never dropped too low, basically like bleeding it but bled it enough to make sure new fluid was coming through, worked a treat only took a few minutes.

Its done 10k since then and has been perfect

Rick

Chris Type R

I wonder if I have air in my clutch system - very occasionally the pedal will slightly lighten up & require an extra +-10mm of travel.

vtidan

RE- Boiling Points: (according to lucas trw)

Dot 3 = 240 c dry 149 c wet
Dot 4 = 270 c dry 163 c wet
Dot 5.1 = 270 c dry 185 c wet

I take the wet figure to mean contaminated (i.e moisture/water in with the fluid) and the dry to mean "fresh" fluid.

Chris Type R

I might be wrong, but I think that the wet or dry refers to how the clutch is cooled - http://en.wikipedia.org/wiki/Clutch#...d_dry_clutches