LubeCorp Cooling System Conditioner consists of water and propylene-glycol with a comprehensive and environmentally safe additive package. It is a revolutionary coolant supplement that is designed to enhance the cooling capacity of engine cooling systems. Compatible with all types of Antifreeze Extends Coolant life significantly Lowers operating temps. 15°F – 25°F Prevents corrosion, oxidation Stops cavitation and erosion Increases cooling capability Prevents scale and build-up