Is it a problem if the coolant exceeds the maximum line?

[RobertDella]

It is not a problem if the coolant exceeds the maximum line. Coolant prevents the coolant from freezing and cracking the radiator or damaging the engine cylinder block or head when the car is parked in cold winter. It is commonly believed that coolant is only used in winter, but in fact, coolant should be used all year round. Coolant is a type of cooling agent with special additives, mainly used in liquid-cooled engine cooling systems. It has excellent properties such as anti-freezing in winter, anti-boiling in summer, and preventing scale and corrosion throughout the year. The method for replacing coolant: 1. Inspection: Before replacing the antifreeze, conduct a comprehensive inspection of the pipelines for any signs of leakage or cracks; 2. Draining: After draining the old antifreeze, clean the channels with clean water until the water flowing out is clear; 3. Refilling: About one hour after draining, add the new antifreeze through the radiator cap until the antifreeze tank is nearly full. Start the car and let it run for about 10 minutes. At this time, the coolant level will drop slightly as some air is expelled from the cooling system. Then, add more antifreeze until it reaches the maximum mark MAX on the reservoir.