leaking master cylinder

[vwdsmguy]

My fluid diapppears till I get a soft pedal a few months later after being full. Has anyone found it leaked into the booster in the back end of the cylinder? I could just add fluid every few months, 1/2 cup or so, but I need a real fix. I can't find evidence of any obvious leaks elsewhere. Also, sometimes when cold I get a trail of bluish smoke on my first long down hill. It looks like a PITA to change the master, so I have been putting it off. Also, is there a test positive for this leak issue?

 

[vwdsmguy]

leaking brake fluid

I might not have a brake issue. It could be in the clutch hydraulics because I have something leaking on the drivers side of the under engine pan, however the clutch pedal action feels normal. Both clutch and brake masters feed from the same reservior. i can't believe the cost of the clutch hydraulic line [$133], so I hope it's not that.

 

[KLXD]

It can leak into the booster.

Brake fluid is water soluble, is the fluid you see leaking? Time to remove the pan and do some looking. Could have a small leak that doesn't affect funcfuncfunction.