What are the components of antifreeze?

[OKendra]

The components of antifreeze are: purified water, methanol, colorants, preservatives, and descaling agents. The functions of antifreeze are: 1. To provide anti-corrosion protection for components of the cooling system; 2. To prevent scale buildup, avoiding the reduction of the radiator's heat dissipation efficiency; 3. To ensure the engine operates within the normal temperature range. The hazards of not replacing expired antifreeze: 1. It causes the water in the antifreeze to evaporate, leading to changes in the antifreeze's freezing point and affecting its performance; 2. It fails to provide anti-corrosion, anti-rust, and descaling functions for the engine, impacting the engine's lifespan; 3. It increases viscosity, reducing cooling and heat dissipation efficiency.