Improves Mileage by Lowering Fuel Surface Tension, resulting in Enhanced Combustion,Mileage Maxx is proven to increase Fuel Economy by 5%-20%. EPA, SAE & Field Tested for over 7 Years and 300 Million Miles. Comprised of Enviromenttally Safe Biodegradable Petrochemicals. Will not harm Engines,Engine Parts,Fuel Lines or Storage Tanks. Does not Void Engine Mfg's Warranties, Works in all Diesel and Gasoline Engines without Modification, Does not contain Alcohol, Methanol, Isopropyl, MBTE,Sulfur or Metal. EPA registered, Patented, California CARB approved, MSDS listed,,Blended by Brenntag, ISO 9002 compliant, Cost effective @$0.10 per Treated Gallon, . Used By Major Fleets, Dean Foods,Allied Waste,Gordon Food Service , others....,Distribued in South America.Australia,South Africa,and Europel.