The base oil composition and shear resistant VI enhancers ensure that the product retains its specific viscosity properties during the entire lubrication time. The ageing process of this engine oil is well managed over the permissible maximum oil change interval. Antioxidants and cleaning additives prevent deposits, keep pistons and valves clean and protect the engine against cold sludge. The low friction loss in the engine significantly reduces fuel consumption and emissions. Low evaporation loss prevents deposits and sludge at the valves, pistons and piston ring grooves.