The antifreeze in a Chevrolet Cruze should generally be replaced once a year. To prevent excessive foam formation, which reduces the heat exchange efficiency between the antifreeze and engine components, ensure the product is within its validity period when adding it. Long-life antifreeze can remain effective for up to three years. If suspended matter, sediment, or signs of deterioration or discoloration are found in the antifreeze, it should be replaced promptly, and the system should be cleaned. How to replace antifreeze: Before completely replacing the antifreeze, conduct a thorough inspection to check for any signs of leakage or cracks in the pipes, with a particular focus on the five-way water pipe. The antifreeze is distributed to different parts of the car via the five-way pipe to perform its function. If there is any antifreeze leakage in this section, the water pipe should be replaced or the connection re-secured as needed. Drain the old antifreeze, then flush the liquid channels with clean water. Add clean water to the antifreeze reservoir and continue filling the reservoir so that water flows continuously through the engine cooling system. Then, start the engine and let it idle for 3 to 5 minutes to circulate the water. The water initially flowing out of the reservoir may appear slightly pinkish. Continue adding clean water until the water coming out is clear. Note: Remember to remove the heater hose and drain the water from the heater core. Approximately one hour after draining, add new antifreeze through the radiator hose. Then, add another container of antifreeze to the antifreeze reservoir until it is nearly full. Start the engine and let it run for about 10 minutes. During this time, the coolant level will drop slightly as air is expelled from the cooling system. Top up the antifreeze until it reaches the "MAXT" mark on the reservoir.
