Special formulation for use with high compression CO2 gas and airgun seals, moving parts and pump actions. Cleans, lubricates and protects metal. Special formulation improves performance on a well-used airgun. See operating instructions in your manual before using. Crossman recommends a drop on the tip of every third AirSorce (88-Gram) cartridge to oil the seals inside the gun. If you do that, your gun will hold gas for years and years.