Is coolant fluid flammable? Is coolant fluid flammable?
Despite its name, coolant fluid is a flammable substance. Even though it may seem strange, since it is a water based product, it has a high glycol base to it, and if you expose it to a temperature that is high enough, then the glycol will catch fire and burn, despite the water in it. In testing done by forensic scientists, pure coolant was mixed with 50 percent water, and it was found that it would erupt in flames, if exposed to a spark or flame source, or if the area around it had a high enough temperature, which was determined to be about 650 to 750 degrees Fahrenheit.