I noticed recently a fluid leaking onto the clutch and I discovered its the infamous CMC failure! After searching around I wasnt able to find an exact answer so I ask now. I've heard that its best to replace the clutch slave cylinder when you replace the clutch master cylinder because when one goes bad the other is sure to follow. However, it looks as though the clutch master is made of plastic and the slave is made of steel. I've read the master is defective because the brake fluid eats away the plastic causing the problem. Therefore, the slave would be fine to leave since it cant be corroded. What do you guys think? Should I replace both or just the master?