An additive for protection from wear of heavy-duty transmission units made using the most modern technologies. It reduces friction and wear. It ensures soft and quiet protection of the units, easy gear shifting. It has a long-lasting effect up to 100 000 km. It smoothens tooth profiles and increases the transmission efficiency. It is suitable for all types of transmission oils in manual transmissions. Application. For manual transmissions, transfer cases and differentials. The additive volume is calculated for 2 liters of transmission oil. Due to the friction reduction effect, the additive is not applicable for automatic transmissions, wet clutches and limited slip differentials. Add each time the transmission oil is changed.