The oil with very high properties: 100% synthetic ester base significantly reduces friction of the engine units which enables to extend engine properties. All 2-stroke Jet Ski engines with separate and mixed lubrication systems: Seadoo and marine engines which designers assume to use API TC ground oil. It is developed for high-performance 2-stroke engines used in competitions, with direct injection or a carburetor. It is used with leaded and unleaded gasoline. API TC; JASO FC; ISO-L-EGD.