This question is contingent on the kind of coolant you’re asking about. Two main kinds of coolants are used in industrial and automotive applications: n Water-based Coolant: This kind of coolant typically comprises made up of water, propylene glycol, or ethylene glycol, in addition to other ingredients like corrosion inhibitors and antifreeze substances. Water-based coolants are not typically thought to be flammable. n Coolant made of oil: This kind of coolant usually consists of oil and other ingredients like friction modifiers and rust inhibitors. Coolants made of oil are not usually considered to be flammable. n It is crucial to remember that some coolants could contain flammable elements, for example, alcohol or other solvents. For instance, some high-performance engines could use racing coolants that contain alcohol, which could be inflammable. Furthermore, certain industrial coolants could contain components that are flammable, for example, cutting fluids that are used to make metal. Reading the material safety information sheet (MSDS) for any coolant you intend to use is essential. It provides information about the potential for flammability and other risks related to the product. However, suppose you have questions or concerns regarding the flammability of a specific coolant. In that case, you should speak with an experienced professional.