Power Service 80 Ounce 1080-06 +Cetane Boost Diesel Fuel Supplement Anti-Freezer-80 oz Prevents fuel gelling in temperatures as low as 40 degrees Fahrenheit Lowers cold-filter plugging point as much as 36 degree Fahrenheit; keeps fuel-filters from plugging with wax Contains Slickdiesel lubricator for maximum fuel lubrication Disperses water in diesel fuel Effective in all diesel fuels, including Ultra Low Sulfur Diesel (ULSD) and biodiesel blends containing up to 20 percent biodiesel