... outlet valve, release all the old coolant.2. Wash the cooling system with radiator cleaner or clean water, drain out ... rubber 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 ... eye, faush with plenty of water. 2L engine radiator coolant