Can Water and Antifreeze Be Mixed?

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Whether water and antifreeze can be mixed depends on the type of antifreeze: 1. Pure antifreeze can be mixed; 2. Pre-mixed antifreeze (as supplied by the manufacturer) cannot be mixed. The functions of antifreeze include: 1. Providing anti-corrosion protection for cooling system components; 2. Preventing scale buildup to avoid reducing the radiator's cooling efficiency; 3. Ensuring the engine operates within the normal temperature range. The hazards of not changing antifreeze for an extended period include: 1. Evaporation of water in the antifreeze, leading to changes in the freezing point and affecting its effectiveness; 2. Loss of anti-corrosion, anti-rust, and rust removal functions for the engine, impacting its service life; 3. Increased viscosity, reducing cooling efficiency.