ONE FORMULA. FIVE FUNCTIONS. Drives out moisture Because WD40 displaces moisture, it quickly dries out electrical systems to eliminate moisture-induced short circuits. Protects metal surfaces with corrosion-resistant ingredients to shield against moisture and other corrosive elements. Loosens rust-to-metal bonds and frees stuck, frozen or rusted metal parts. Gets under grease, grime, and gunk. Non-aerosol formulas also dissolve adhesives, allowing easy removal of labels, tape, stickers, and excess bonding material. Lubricating ingredients are widely dispersed and hold firmly to all moving parts.