The Kramp 9021088002400 Shifter is a premium fuel additive specifically formulated to enhance the performance and longevity of diesel engines. This 0.5-gallon (1.89 L) container provides a powerful treatment designed to improve fuel stability, prevent fuel gelling in cold weather conditions, and clean the entire fuel system. It effectively treats up to 60 gallons of diesel fuel, reducing fuel filter plugging and protecting against corrosion, ensuring optimal engine operation and reliability for agricultural and industrial machinery.