Power Service Diesel 911 rescues your diesel engine from winter emergencies. Use when your vehicle will not start or gain power due to a frozen fuel filter, gelled fuel or water in your diesel tank. Product Features:Effective in all diesel fuels, including ULSD (Ultra-Low Sulfur Diesel) and biodiesel blends containing up to 20% biodiesel (B20); complies with the federal low sulfur content requirements for use in diesel motor vehicles and nonroad enginesDe-ices frozen fuel filters, reliquifies gelled fuel and removes water from diesel tanksContains Slickdiesel for fuel lubricationProtects against wear from USLD