Brake warning light came on my first trip out in the van in a while, stopped and noticed the clutch / brake fluid reservoir was down to minimum. Have since topped it up, and then again when it dropped after use, but checked again today after 1000 mile 3-day trip and it is still on max.
The only thing that has been different from normal is that because I've been out of action, the van has sat for a couple of weeks and not moved. When I moved it for the first time, the clutch pedal was a bit slow in coming back up for the first few uses, which leads me to think it is the clutch cylinders.
Had a good look around all the brakes & pipes and can't see / feel any leaks, same with the clutch cylinders. Tried sticking a board until the engine bay for a couple of days, but no sign of any leak.
Could either of the clutch cylinders be leaking 'internally' without any visible external evidence?
Would rather get to the bottom of it before I'm left stranded on the side of the road!
Cheers,
Matt