Diesel Fuel Antifreeze additive

The most efficient treatment ratio for a particular fuel may vary, depending upon crude source and wax content.  For bulk stored fuel it is necessary to ensure thorough mixing of the additive in the fuel. When adding to a vehicle fuel tank, we strongly recommend that the additive is pored into a partially filled tank (i.e. approximately quarter full). The fuel tank should then be filled with fuel. Let the engine run for a few minutes to flush fuel lines and filter assembly.