Pro line super diesel additive can be added to the fuel after carrying out repair work on the fuel system or during an inspection pro line super diesel additive can be added every 2 000 km as a preventative measure or added to commercial vehicles at every other refueling stop mixing takes place automatically contents of the can are sufficient to treat up to 300 liters of fuel dosage 1 300 pro line super diesel additive is also well suited for decommissioning vehicles by protecting the fu