Prevents the formation of paraffin crystals and filter clogging. Improves fuel flow at sub-zero temperatures and lowers the fuel pour point to -39°C. The additives contained in the product lubricate the fuel pump. Clean the injectors and protect the entire system from corrosion. Increases the cetane number of diesel fuel. Which ensures trouble-free starting even in extreme conditions. Shake before use and use preventively before the formation of paraffin crystals. Before refueling, pour 50 ml of DFA-39 concentrate into the tank and then refuel the tank (50 ml of additive per 60 l of fuel). When using summer diesel fuel, it is recommended to use double the amount (50 ml of additive per 30 l of fuel). Overdosing the product is safe and will not damage the system.