How do you put water in the radiator of a corsa cdti 07?

To add water to the radiator of a 2007 Corsa CDTi, first ensure the engine is cool to avoid burns. Locate the radiator cap, usually found at the front of the engine bay, and carefully remove it. Fill the radiator with a mixture of water and coolant as specified in your owner's manual, ensuring not to overfill. Finally, replace the cap securely and check for any leaks.