Why does the coolant reservoir keep making noise after the car is turned off?
1 Answers
After parking, as the temperature of the coolant decreases, the pressure inside the radiator drops. This causes the coolant to flow from the expansion tank to the radiator under atmospheric pressure, resulting in the continuous noise from the coolant reservoir. Additional information: 1. Introduction to antifreeze: The full name of antifreeze is antifreeze coolant, which is a type of coolant containing special additives. The main component of most antifreeze is ethylene glycol, which has a high boiling point and low freezing point. It ensures the car can operate normally in cold climates without freezing and also helps cool the engine during high temperatures, making it an essential automotive product. 2. How to use antifreeze: Use an antifreeze-compatible radiator in winter and a regular radiator in summer. Also, pay attention to the color when adding antifreeze. If the first fill was blue, then add blue; if it was green, add green. Do not mix different types. Different types of antifreeze have different freezing points due to their varying compositions. Therefore, select antifreeze based on the temperature conditions of the vehicle's operating environment. Generally, the freezing point of the antifreeze should be 10~15°C lower than the local minimum temperature to prevent the antifreeze from losing its antifreeze function.
