Lucas Cold Weather Concentrate is a unique and extremely effective diesel anti-gel system that improves the cold temperature flow properties of ultra low sulfur fuel, standard diesel fuel, and bio-diesel. It reduces the pour point, cold filter plugging point and low temperaure fluidity. It prevents diesel fuel gelling and vastly improves cold temperature operability. The sulfur content of Cold Weather Concentrate does not exceed 15 ppms. This diesel fuel additive complies with the Federal low sulfur content requirements for use in diesel motor vehicles. Nine (9) fluid ounces of Cold Weather Concentrate in 100 gallons of ultra low sulfur fuel effectively lowers the cold filter plugging point down to -20?F. An extra 3 ounce treat rate lowers the cold filter plugging point down to -25?F. The effectiveness in bio-diesel will depend on the amount of vegetable oil in the fuel.