STP® Premium Small Engine 4-Cycle Oil SAE 10W-30 is specially formulated for use in generators and outdoor power equipment. Its synthetic blend formula is scenically engineered with antioxidants, anti-wear technology, a viscosity index improver, detergents and a corrosion inhibitor to help maintain maximum performance in 4-cycle small engines. Its synthetic blend formula helps extend the drain interval, reduce oil thickening and oxidation, and promotes easier starts all year. Can be used with generators, riding mowers, pressure washers, gas powered pumps, compacters, chipper shredders and other 4-cycle gasoline powered small engines (refer to owner’s manual). Meets API category SJ specifications.