How do you drain a petrol tank of a astra 1600 2001?

To drain the petrol tank of a 2001 Astra 1600, first ensure the vehicle is on a level surface and the ignition is off. Disconnect the fuel pump relay or fuse to prevent the fuel pump from activating. Then, locate the fuel tank drain plug, if present, or remove the fuel line at the tank and direct it into a suitable container to drain the fuel. Always take necessary safety precautions, such as working in a well-ventilated area and avoiding open flames.