Can Antifreeze Be Mixed with Water?
2 Answers
It is not recommended to mix antifreeze with water. Here are the specific reasons: 1. Antifreeze has a higher boiling point. The boiling point of water is 100 degrees Celsius, while high-quality antifreeze coolant typically has a boiling point of around 110 degrees Celsius. Mixing the two will reduce the effectiveness of the antifreeze. 2. Antifreeze prevents scaling. High-quality antifreeze is made with distilled water and contains anti-scaling additives, which not only prevent scale buildup but also have descaling properties. If antifreeze is mixed with water, scale can adhere to the metal surfaces of the radiator and water jacket, leading to increasingly poor heat dissipation.
I'm the type who loves delving into automotive details. Antifreeze can indeed be mixed with water, and I've been doing this all along. The principle is simple: pure antifreeze is too viscous, has a low boiling point, and poor heat dissipation. Adding water improves the boiling point and antifreeze performance, preventing the engine from overheating in high temperatures or freezing in winter. It's best to use distilled or deionized water—don't add tap water directly, as the calcium and magnesium minerals in it can deposit in the radiator, causing scale or corrosion. A typical mixing ratio is 50% antifreeze and 50% water, which keeps the cooling system running efficiently while extending component lifespan. I recommend checking the fluid level regularly and replacing the mixture every season—it's cost-effective and safe. Don't forget to test the mixing ratio with a dedicated tool to ensure accuracy.
