Clutch squeaking from outside
 

So I had just top up around 1/4 of my clutch fluid 3 days ago.

Today, when I pressed down the clutch all the way to the floor, the clutch squeaks. This sound only comes when the pedal is 1/4 away from the floor.

Any idea on what's happening? Is it because I topped up by using 6 months old opened Dot 4 brake fluid? I currently have 80,000 KM on my car.

Anyway here is the video to show on what's happening

Any fluid running down the firewall? Could be your master cylinder.

Sounds like the clutch master Cylinder.
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Mine used to do the exact same thing. Sorry though, i completely forget what was repaired however... Was a few months ago. I'll go check my receipts and let you know asap.

slave cylinder

Sounds like clutch/slave but honestly unless you find any fluid by your pedals it could just be a squeak that needs some lubing
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I had just tried to bleed my clutch fluid and it now stucks on the floor. I had tried to bleed again but there are still many bubbles.
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