Power Service Diesel 911 32oz., Case of 12 Treats 30-75 gallons diesel fuel per Bottle Ultra Low Sulfur Diesel (ULSD) Compliant  contains less than 15 parts per million (ppm) sulfur Effective in all diesel fuels, including ULSD and biodiesel De-ices frozen fuel-filters  no requirement to change fuel-filters Prevents fuel-filter icing Contains Slickdiesel for maximum fuel lubrication  protects fuel injectors and pumps against accelerated wear from Low and Ultra Low Sulfur Diesel (ULSD) fuels