A concentrate of our regular fuel treatment plus anti-gel. Lucas Extreme Cold Weather Fuel Treatment was developed to eliminate fuel gelling problems in the most extreme conditions. It contains all the important additives of our regular fuel treatment to increase fuel mileage and performance. Lucas Extreme Cold Weather Fuel Treatment complies with the federal low sulfur content requirements for use in diesel motor vehicles and nonroad, locomotive, and marine diesel equipment engines. Key Benefits Contains special clean burning additives to facilitate a complete combustion burn for more power, better fuel economy and lower emissions Prevents fuel thickening Prevents diesel fuel gelling, the #1 cause of winter breakdowns Specifically formulated for all diesel trucks and off road equipment with non fuel recirculating engines Lubricates fuel for increased miles per gallon One half gallon treats 250 gallons of fuel