It prevents growth of paraffin crystals in diesel fuel when the vehicle is used in winter. The viscosity of diesel fuel increases due to frost, fuel filters and fuel piping are clogged with paraffin crystals. The additive ensures performance of diesel fuel at the temperature as low as - 31°C. It ensures quick engine start in frosty weather, efficiency and operation reliability. It’s recommended by BMW. Application. For all grades of diesel fuel, it ensures reliability of engine operation in winter. Add the additive following the proportion 1:1000, i.e. one measuring cap for 30 liters of diesel fuel. Strictly follow the dosage. Add at positive temperatures and in advance. DE-FREEZE before application!!!