Diesel fuel antifreeze restores the filterability of frozen diesel fuel. It prevents re-freezing even in extreme temperatures. • Dissolves ice and paraffin crystals • Safe for the engine's fuel system • Thaws the filter, fuel lines, and other fuel system components • Improves the low-temperature properties of diesel fuel • Specifically designed for use in extreme climate conditions • Restores the functionality of fuel system components • Compatible with all types of diesel fuel