How Often Should Coolant Be Replaced in a New Car?

1 Answers
Lewis
07/30/25 4:44am
New cars typically require coolant replacement every two years or every 30,000 kilometers. The original factory coolant in new cars is of high quality and won't show signs of boiling over or freezing cracks. The coolant replacement method is as follows: Before completely replacing the coolant, conduct a thorough inspection first to check for any signs of leakage or cracks in all pipes, with a focus on the five-way water pipe. The coolant is distributed to different parts of the car to function after flowing through the five-way pipe. If there is any leakage of coolant in this part, replace the water pipe or re-secure the connection as needed. Drain the old coolant, then flush the liquid channels with clean water. Add clean water to the coolant reservoir, then continuously pour water into the reservoir so that it flows through the engine cooling system. Start the engine and let it idle for 3 to 5 minutes to circulate the water. The water initially flowing out from the reservoir will be slightly pinkish. Continue adding clean water until the water coming out is clear. Note: Don't forget to remove the heater hose and drain the water from the heater core. After draining for about an hour, add the new coolant through the radiator hose, then add another container of coolant to the coolant reservoir until it's nearly full. Start the engine and let it run for about 10 minutes. At this point, the coolant level will drop slightly as some air is expelled from the cooling system. Add more coolant until it reaches the "MAXT" mark on the reservoir.
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