Today I put a new set of rear brake pads in and decided while I was at it I'd flush the brake lines, F&R. The fluid came out a little darker than I remember it being upon installation two years ago, but nothing alarming. Then I opened the clutch reservoir and holy crap- it was gray and sploogy. Instead of flushing it through the lines and slave cylinder, I sopped it out with a few paper towels. Then flushed through about 3 reservoirs full of fresh synthetic DOT 4. The stuff that came out of the slave cylinder bleed valve was clear so I don't think any of the contaminated stuff made it through the line to the clutc cylinder but it sure reminded me that the two year recommended fluid change has merit. It seems I have a path in the clutch master cylinder or reservoir that allows moisture in. The top side of the rubber diaphram did seem to have some condensation of it so I guess its not doing its job entirely since something obviously got past it.
So watch your maintenance schedules.
So watch your maintenance schedules.