Since the 1920s, the FS System has been providing fuels to farmers across the Midwest. Today, the FS System is a leading supplier of refined and renewable fuels to a wide range of accounts including farmers, truckers, construction companies, municipalities and more. Sales of Dieselex庐 Gold, the premium diesel fuel with origins back to 1952, are growing rapidly as users experience the benefits of using the latest in fuel-additive chemistry. In fact, it was one of the first fuels to be recognized in the Top Tier Diesel Fuel program.