Why did the coolant level drop by one centimeter after driving 500 kilometers in a small car?

1 Answers
VanJulia
07/29/25 5:29pm
If the coolant level in a small car drops by one centimeter after driving 500 kilometers, the auxiliary tank should be checked for leaks. Below is an introduction to coolant: 1. Introduction: Coolant, fully known as antifreeze coolant, refers to a coolant with antifreeze properties. Antifreeze prevents the coolant from freezing and expanding during cold seasons, which could crack the radiator or damage the engine block. 2. Composition: Coolant consists of three parts: water, antifreeze, and additives. Depending on the antifreeze component, it can be categorized into alcohol-based, glycerol-based, ethylene glycol-based, and other types of coolant. 3. Advantages: Alcohol-based coolant is inexpensive, has good fluidity, and is simple to prepare, but it has a low boiling point, is prone to evaporation loss, has an easily elevated freezing point, and is flammable. It is gradually being phased out. Glycerol-based coolant has a high boiling point, low volatility, is less flammable, non-toxic, and has minimal corrosion.
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