Originally Posted by GaleForce

Clutch Slave Cylinder, a known weak link in the drivetrain.

Originally Posted by chrischhorn

CSC = clutch slave cylinder.
Launching constantly without much of a cool down on OEM fluid, you probably just boiled it. No need to change it after it cools down its fine. You should change it to higher temp brake fluid like RBF600 With a SS clutch line to avoid it happening. Its still possible it could happen but much less likely and it will take much longer to do. CSC failure your pedal will hit the ground and your fluid will be low. Would not return to normal after a cool down period.