What is the difference between blue, red, and green antifreeze?

[JasmineLynn]

Antifreeze of different colors has different chemical compositions. Red antifreeze contains propylene glycol, blue antifreeze contains diethylene glycol, and green antifreeze contains ethylene glycol. Here is some relevant information: 1. Different costs: Besides the color difference, there is also a cost difference. For example, green antifreeze is prone to catching fire and evaporating, making it unsuitable for high-temperature engines. Additionally, the boiling points vary. Red antifreeze has a freezing point of -17 degrees and a boiling point of 290 degrees, while ethylene glycol has a freezing point of -11 degrees and a boiling point of 200 degrees. 2. Do not mix: It is crucial not to mix antifreeze of different colors, as doing so can cause harmful chemical reactions that pose a fatal risk to the engine. Therefore, the best practice for car owners is to refill the antifreeze according to the type originally used in the vehicle. Whatever color of antifreeze the car originally used should be continued without arbitrary changes.