Your best partner for the winter: Eco 10,000 Diesel
Eco 10,000: prevents water from freezing in the tank.
Often blamed wrongly to the oil companies of the poor quality of the diesel fuel to extremely cold weather, because this is to prevent the paraffin from freezing. However, it is the condensation frozen which cause a poor supply of fuel in sub-zero temperatures.

A brief reminder: the injection pump compresses the diesel fuel and raises it to a temperature very high. The diesel fuel is used as coolant for the fuel injection pump. The diesel fuel burned returning to the tank and heats the fuel. When cooled and vented, it condenses and creates water in the tank, with all the consequences that you already know.
Eco 10,000 absorbs up to 15% of its volume; it is your best solution for the diesel in conditions of extreme cold.

Your solution to avoid being stranded on the side of the road with extreme cold:
125 ml per 50 liters of Eco 10.000 Diesel; increase dose if necessary.
Other important features of Eco 10.000 Diesel: antibacterial and antilodos, cleaning of injectors and injection pumps, cleaning the engine, DPF and the EGR valve.