How often should the coolant in a Cavalier be replaced?

[Tony]

The coolant in a Cavalier generally needs to be replaced every two years or approximately 40,000 kilometers. Before completely replacing the coolant, a thorough inspection should be conducted to check for any signs of leakage or cracks in the pipes, with particular attention to the five-way water pipe. The five-way pipe is named for its five connecting interfaces to various parts. Coolant flows through the five-way pipe and is then distributed to different parts of the car to function. If there is any leakage of coolant in this section, the water pipe should be replaced or the interface re-secured as needed. Drain the old coolant and then flush the liquid channels with clean water. Add clean water to the coolant reservoir, then continuously inject 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 of the reservoir may have a faint pink tint. Continue adding clean water until the outflowing water is clear. Note: Don’t forget to remove the heater hose and drain the water from the heater core. About an hour after draining, add the new coolant through the radiator hose, which allows the coolant to flow quickly into the radiator. Then, add another bottle of coolant to the reservoir until it is nearly full. Start the engine and let it run for about 10 minutes. At this point, the coolant level will drop slightly as air is purged from the cooling system. Top up the coolant until it reaches the "MAXT" mark on the reservoir.