Diesel fuel — general information (VW Sharan 1)

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

Thus, summer diesel fuel will cause you difficulties, for example, already at temperatures below -2°C, while winter fuel retains fluidity down to -15°C. If there is no winter fuel at the gas station, you can add special depressant additives (antigels) to the summer fuel, which lower the paraffinization temperature from about -8 to -10°C.

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

• the temperature drops below -15°C;
• you haven't driven your car for a long time, and then you start using it again, but in winter, while the tank is filled with fuel bought in summer;
• you bought diesel fuel at a gas station that has not yet switched to selling winter fuel.