my son has left me his disco to do a few jobs for him while he is away says the clutch is a bit iffy. on closer inspection the clutch fluid is muddy brown so changed it. on doing this i noticed that as i opend the bleed nipple on the slave cylinder fluid driped out and when you try to bleed the system the pedal drops to the floor as it should but then the resivior drops fluid and it continues to bleed out of the nipple. does anyone know if this is right or is it the master cylinder [!Expletive Deleted!]! any help would be thankfully recived ..