Here is the fact and symptoms:
Car : VW Polo 2002 1.4L Manual (car not listed above)
1. Chirping noise when idle, Noise goes away when in clutch
2. Whinning noise when driving, Noise goes away when driving
3. On jack, left wheel spin up, knocking sound can be heard from gearbox.
4. Oil level - Not sure
People said, change the gearbox, throwout bearing fails, bad bad bearing inside tranny; but i`m not sure which,