Genuine Motor Oil 5W-40 is a fully synthetic 4-stroke engine oil formulated and made in the USA to meet the most current JASO T903-2016 MA-2 and API SN service standards. Its state-of-the-art additive package delivers superior wear protection, rust and oxidation prevention, and optimal frictional characteristics for wet clutch applications � making it an ideal choice for scooters and motorcycles requiring 5W-40 JASO MA-2 oil.