XenTx® Extreme Diesel Fuel Treatment is a highly concentrated formulation using "Clean Boost Technology" that Improves Fuel Mileage, Reduces Emissions, Increases Power and is EPA Registered. XenTx® particles ignite inside the fuel during the burn, adding energy for a more thourough combustion. This diesel fuel additive complies with the federal low sulfur content requirements for use in diesel motor vehicles and non-road engines.