Synthetic motor oil formulated for 4-stroke snowmobile and ATV engines. Only synthetic base oils of the third and fourth (VHVI + PAO) are used, it retains the working properties of the oil at very negative ambient temperatures. The use of modern technological additives of nano-carbon reinforcement reduces friction, protects during the critical period of cold start, when significant wear of engine parts can occur, and also guarantees a stable start of the motor. The viscosity grade of the engine oil is suitable for operation in extreme weather conditions.