Well I have less than 8,000 miles on my slave cylinder after installing a new clutch a year ago and today it bought the farm. I guess it could have been the valve being installed backward like I have read about on here that causes them to prematurely fail. I have noticed that in that time that clutch fluid had been leaking out. And I have had to refill the reservour 3 or four times. Time to get dirty again and feel my skin burn from that clutch fluid. Wahoo!