While an internal combustion engine is operating, it naturally wears from metal-on-metal contact. Modern lubricants are designed to reduce this effect with chemical additives. However, the sad truth is that additives used in most lubricants aren’t very effective. Especially without the use of ZDDP (Zinc Dialkyl Dithio Phosphate). Opti-Lube’s ZDDP Oil Fortifier is a high-tech Lubricant Enhancer and is designed to be added to the lubricants you use now to reduce wear and extend the life of your engine.With the help of Friction Modifiers that have continuously proven crucial for proper and complete lubrication, Opti-Lube’s ZDDP Oil Fortifier bonds to metal surfaces, filling in the abrasions from normal engine use to create a smooth surface for the metal parts to slide against.Flow is also unaffected at temperatures from -35° F and up to 500° F.Satisfied Customers Include: Power Plants, Railroads, Agriculture, Ships, Mining, Factories, Trucking, Companies, Manufacturing Facilities, Auto Fleets, Etc.Typical Applications: Engines, Gear Boxes, Manual Transmissions, Compressors, Turbines, Hydraulic Systems, Pumps, Roller & Journal Bearings.