How do you change oil in gearbox for peugeot 206?

To change the gearbox oil in a Peugeot 206, start by lifting the car securely and placing it on jack stands. Locate the gearbox drain plug and remove it to drain the old oil, then replace the plug once the oil has fully drained. Next, find the fill plug on the side of the gearbox, remove it, and use a funnel to pour in the new gearbox oil until it reaches the proper level. Finally, replace the fill plug and ensure everything is securely tightened before lowering the car.