How Often Should the Coolant in a Newly Purchased Sedan Be Replaced?
1 Answers
A newly purchased sedan typically requires coolant replacement every two years or every 30,000 kilometers. To prevent excessive foam formation, which reduces the heat exchange efficiency between the coolant and engine components, ensure the product is within its validity period when adding it. Long-life coolants can remain effective for up to three years. If suspended particles, sediment, or signs of deterioration or discoloration are observed in the coolant, it should be replaced promptly, and the system should be cleaned. The method for replacing coolant is as follows: Before completely replacing the coolant, conduct a thorough inspection to check for any signs of leakage or cracks in the pipes, with particular attention to the five-way water pipe. The coolant is distributed to different parts of the car through the five-way pipe to perform its function. If there is any leakage of coolant in this section, replace the water pipe or resecure the connection as needed. Drain the old coolant, then flush the liquid channels with clean water. Add clean water to the coolant reservoir, then continue filling the reservoir with water to allow it to flow continuously through the engine cooling system. Start the engine and let it idle for 3 to 5 minutes to circulate the water. Initially, the water draining from the reservoir will have a faint pink tint. Continue adding clean water until the drained water runs clear. Note: Remember to disconnect the heater hose and drain the water from the heater core. Approximately one hour after draining, add the new coolant through the radiator hose. Then, add another container of coolant to the reservoir until it is nearly full. Start the engine and let it run for about 10 minutes. As some air is expelled from the cooling system, the coolant level will drop. Top up the coolant until it reaches the "MAXT" mark on the reservoir.
