I had the same problem. Lost pressure because my clutch master cylinder was leaking. I had the clutch replaced and when I purchased the master cylinder from Acura they asked me if there was fluid dripping inside the car. He said there's a bulletin posted on the part number that if there is fluid leaking inside the car, you would also need to purchase the tube/line that goes from the clutch master cylinder to a connection on the firewall. I don't know if that has anything to do with it or not, but mine's been fine for over a month now. The extra tube was $15.