Okay so I'm driving on 275 last week and I go to downshift from 5th to 4th and my clutch stays floored to the ground. At this moment I start to think my clutch blew out. So I get the car home somehow and called my uncle. He said what happened was that I needed more brake fluid in the clutch cylinder reservoir because there was no pressure. So I fill the reservoir to the maximum and pump the clutch. After a few minutes it regains pressure and I am able to shift normally again. Today I get in the car and the clutch loses pressure again. I check the reservoir and it's full, so I pump it for a few minutes and regains some pressure not a whole lot, but while I'm doing this I hear a sqeuaking noise coming from engine everytime I press the clutch. I really don't know what's going on and would like some advice on this. The car is a 2000 Civic Si by the way and it has the S4C tranny and some kind of aftermarket clutch don't know what kind though. Thanks TR.