Prevents fuel gelling in temperatures as low as -40F. Equals performance of a 50/50 blend of No. 2 and No. 1 diesel fuels Lowers Cold-Filter Plugging Point (CFPP) as much as 36F. - keeps fuel-filters from plugging with wax Boosts cetane up to 4 numbers for improved horsepower and faster cold starts Contains Slickdiesel Lubricator for maximum fuel lubrication - protects pumps and injectors from accelerated wear Contains anti-icing additive - protects against fuel-filter icing Contains wax anti-settling dispersants - protects against fuel-filter plugging at temperatures below the fuel cloud point Disperses water in diesel fuel Effective in all diesel fuels, including Ultra Low Sulfur Diesel (ULSD) and biodiesel blends containing up to 20% biodiesel (B20) Power Service Diesel Fuel Supplement + Cetane Boost is an diesel fuel anti-gel/winterizer that is used in the cold winter months to keep fuel-filters from plugging with wax and to prevent fuel gelling. This Arctic Formula effectively treats all diesel fuels to keep equipment running trouble-free for maximum winter operability. Power Service Diesel Fuel Supplement + Cetane Boost is intended for use only during cold winter months when temperatures drop below + 30F. Use Power Service Diesel Kleen + Cetane Boost (in the silver bottle) for peak performance in non-winter months.