What Kind of Water Should Be Added to the Engine Radiator?

[VonWalter]

The liquid added to a car's engine radiator is antifreeze coolant, also known as antifreeze or antifreeze coolant. Its primary function is to cool the engine during operation, ensuring the engine works at normal temperatures and preventing overheating or freezing in winter. Precautions for Adding Coolant: Avoid adding water to the antifreeze. Adding water to antifreeze raises its freezing point and reduces its cooling efficiency. Moreover, tap water contains impurities such as scale, which can cause sedimentation and impair the performance of the car's cooling system. When replacing antifreeze, it is essential to flush the cooling system internally to remove any residual scale. Antifreeze contains descaling agents, and if scale is not cleaned promptly, it can affect the antifreeze's performance when added. Do not add antifreeze immediately after turning off the engine when it is still hot. Opening the cap at this time can cause the antifreeze to splash out and potentially cause injury. If you must add coolant urgently, wait for the engine to cool down. Remember to wrap the cap with a damp cloth and open it slowly.