Ichiro Seiryu ICR-2380~2381 motorcycle oil is a multigrade lubricant designed for four-stroke motorcycle engines. It contains a balanced blend of a specially selected synthetic base, high viscosity index base stocks and a special proprietary additive package. Ichiro Seiryu ICR-2380~2381 motorcycle oil is engineered to provide unsurpassed wear protection, engine cleanliness and oxidation resistance, as well as consistent viscosity.