How Much Coolant Should Be Added to a Car?

[ValerieFitz]

Generally, 4-6 liters of coolant should be added to a car. The functions of coolant are as follows: 1. Anti-boiling: Coolant that meets national standards usually has a boiling point exceeding 105°C, compared to water's boiling point of 100°C. Coolant can withstand higher temperatures without boiling (overheating), meeting the cooling needs of high-load engines to some extent. 2. Anti-freezing: In extremely low temperatures, it ensures the car's cooling system is not damaged by freezing. Commonly used antifreeze typically has a freezing point between -20°C and -45°C, and the appropriate type should be selected based on the actual needs of different regions to meet usage requirements. 3. Anti-rust: High-quality antifreeze can prevent rust in the cooling system. Rust in the cooling system can accelerate wear and reduce heat transfer efficiency. 4. Anti-corrosion: The primary function of coolant is to prevent corrosion. Corrosion is a chemical, electrochemical, and erosive process that gradually damages the metal surfaces inside the cooling system. In severe cases, it can perforate the walls of the cooling system, causing coolant leakage and leading to engine damage.