What gearbox oil do you put in a citroen c2?

For a Citroën C2, the recommended gearbox oil is typically a synthetic or semi-synthetic fluid that meets the specifications of API GL-4 or GL-5. Specifically, 75W-80 or 75W-90 viscosity oils are commonly used, depending on the engine type and year. It's best to consult the owner's manual or a professional mechanic for the precise requirements for your specific model.