Power Mix 500 ULSD is a multi-functional diesel fuel treatment designed to clean and maintain the cleanliness of fuel systems, increase engine efficiency and replace the natural lubricity removed from fuel during the hydro cracking process used to make Ultra Low Sulfur Diesel (ULSD). The continual use of this product will reduce the overall operating cost of diesel engines by providing a fuel that will minimize injector wear, injector fouling and tip erosion allowing engines to operate at peak performance and maintain optimum fuel efficiency. Available formula for Winterization protection against gelling, waxing and fuel system freezing.