What happens if water is added to antifreeze?

[LeMatteo]

Adding water to antifreeze will lower the freezing point of the antifreeze, potentially causing the engine to overheat. Additionally, it reduces the antifreeze's ability to resist freezing, and in severe cases, it may lead to the risk of the engine cracking due to freezing. Generally, antifreeze can withstand temperatures as low as -40 degrees Celsius, but after adding water, this may drop to -20 degrees Celsius. In northern regions, it is essential to replace it with standard antifreeze before winter to prevent the engine from freezing and cracking. Precautions for using antifreeze include: 1. Try to use the same brand of antifreeze; 2. Most antifreeze has a validity period of two years; 3. Avoid mixing with water; 4. For vehicles using antifreeze, never directly add tap water; instead, use distilled or deionized water.