This document summarizes the benefits of a diesel fuel additive called XenTx Extreme Big Rig Diesel Fuel Treatment. Laboratory tests showed it increased fuel economy by 2.6-3.06%, lubricity by 44%, power by 3%, and reduced NOx and PM emissions. It works by adding energy during combustion for more thorough burning. Users can expect increased fuel filter life, reduced soot, and savings of $4,650-$9,050 per year on fuel depending on the improved mileage. It is sold in drums treating 55,000 gallons of fuel for $1,950.