Diesel fuel — general information

At a certain temperature, paraffin crystals form in the diesel fuel, which make the fuel viscous so that it can no longer pass through the filter. In this case, the fuel is said to have thickened. In order to avoid an increase in the viscosity of the fuel, you should buy at gas stations (gas station) fuel that matches the season (summer or winter).

Thus, summer diesel fuel will give you problems, for example, even at temperatures below -2°C, while winter fuel remains fluid down to -15°C. If there is no winter fuel at the gas station, special pour point depressants can be added to summer fuel (antigels), which lower the waxing temperature from about -8 to -10°C.

When operating a diesel engine vehicle at low temperatures, problems may occur in the following cases:

• the temperature drops below -15°C;
• you did not drive a car for a long time, and then began to operate it again, but in the winter, while the fuel purchased in the summer was filled in the tank;
• you bought diesel fuel at a gas station that has not yet switched to selling winter fuel.