Check the Fluid for a Hydraulic Clutch in Your Car
Cars with manual transmissions (stick shift) use either hydraulics (which uses fluid) or a cable to connect your clutch pedal to the transmission. If your car has a hydraulic clutch, the fluid must be checked monthly to ensure that it’s full and there aren’t any leaks.
1. Determine whether your car has a hydraulic clutch.
2. Turn the engine off and open the hood.
3. Look for a small plastic container about 1 inch in diameter located close to the back of the engine, usually near the brake fluid reservoir. It looks a lot like the brake fluid reservoir but it’s smaller. Imagine that the clutch pedal went straight through into the engine compartment: this is where you’ll find the clutch master cylinder and clutch reservoir.
4. Check the fluid level. The reservoir is usually clear with a small round rubber cap on the top; it should be filled to the top.
5. Add brake fluid if it’s low.
6. Replace the cap.