:drive it. Basically the piston goes in and out. Doesn't matter if you're :squealing around corners on an autocross track or drag racing. Slaves :usually fail when they rust through due hydroscopic brake fluid and age. :However if the clutch fork is not installed properly or has bent, etc. it could :be applying too much pressure to the slave piston pushing it too far which :is causing it to blow. :There are plenty of long time hard core racers on this site who don't go :through slave cylinders, because hard driving doesn't accelerate their :wear. So you probably won't get much feedback on whether the pathfinder :slave is compatible as the OEM one has always been fine. :You can mask the problem if you want by installing a different type of :slave, but wearing out a slave in 1,500 miles is not normal, so you will :probably end up with the problem again sooner rather than later. Good :luck. : :the slave cylinder is designed to move a clutch diaphram of a certian pressure when you increase the pressure of the clutch disc you over work the slave and the seals fail and start to bypass presto no clutch all i asked was if the pathfinder slave would work or not but apparantly a streight anwser is out of the question tks dan