John Deere introduced a Sulfur Compatibility Solution for select Interim Tier 4/Stage IIIB applications (greater than 56 kW) and FT4/Stage IV applications (less than 56 kW). The Sulfur Compatibility Solution is designed to serve customers migrating highly regulated Tier 4 equipment, requiring ULSD to a lower-regulated or nonregulated market.
Non-ULSD fuel contains sulfur levels higher than 15 parts per million (ppm). The John Deere solutions work by removing or disabling the systems that are susceptible to damage when using non-ULSD. The key systems affected are the exhaust after treatment system and exhaust gas recirculation (EGR) system.