VROOAM PRO-GREEN COOLANT is a non-toxic, biodegradable, silicate-free and ready-to-use Long-Life coolant based on Mono Propylene Glycol and full OAT Technology.VROOAM PRO-GREEN COOLANT protects all metals, neutral to water pump seals and seals, prevents overheating and reduces engine temperature, ensures constant power delivery and has frost protection down to -26 C.