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What are the differences between different colors of antifreeze?

1 Answers

VonJohn

07/30/25 1:46am

There are three main differences between antifreeze of different colors: 1. Different colors: Ethylene glycol-based antifreeze appears green. Diethylene glycol antifreeze is blue. Propylene glycol antifreeze is red. 2. Different costs: Ethanol is flammable and volatile, so its content should not exceed 40% when preparing, and it is not suitable for use in diesel engine cooling systems with higher operating temperatures. Glycerin (glycerol) requires a significant amount in water to achieve a low freezing point antifreeze. 3. Different boiling points: The freezing point of glycerin (glycerol) is -17℃, and the boiling point is 290℃. When mixed with water, the lowest freezing point can reach -46.5℃. The freezing point of ethylene glycol is -11.5℃, and the boiling point is 197.4℃. When mixed with water, the lowest freezing point can reach -68℃.

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