... outlet valve, release all the old coolant.2. Wash the cooling system with radiator cleaner or clean water, drain ... tanks.3. Close the outlet, fill the radiator with anti-freeze coolant.4. Start the engine, heat the car ... there's decrease of the coolant, fill again. Caution1. Do not turn on the radiator cover when it's temperature ... contact with eye, faush with plenty of water. 2L engine radiator coolant