Clutch: Mechanical friction device that engages or disengages the engine from the transmission.
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It is located between the engine and the gearbox. It is used to disengage the engine, which prevents the movement to be transmitted to the gearbox while the gear shifts are made. Roughly speaking, it is the piece that disengages the engine from the wheels when the driver presses on the clutch pedal.
I keep losing pressure in my clutch i just brought the car. Ive been told by the previous owner that its leaking. Is it a big problem or should i just buy the slave master cylinder and get a mechanic to replace it or what do you think. Thank you