SAE 5W-40 viscosity grade corresponds to the most recent manufacturers' recommendations—and improves engine startups when cold, thereby reducing wear. JASO MA specification offers excellent friction levels to guarantee clutch response and durability. Improved oil resistance for excellent high-temp protection, particularly in city use, full load during long periods, and stop-and-go use with difficult cooling. Very low volatility to reduce oil consumption. Detergent and dispersant properties ensure engine cleanliness, and resistance to viscosity increase from unburned deposits produced by the engine.