Four Stroke 10W-40 Lawn Mower and Stationary Engine Oil is a multigrade SAE Viscosity 10W-40 crankcase oil designed for small petrol and light diesel engines. It controls oil consumption and deposits and protects against rust, corrosion and wear, leading to longer engine life. Recommended for four stroke petrol lawn mower engines running on leaded, unleaded or lead replacement petrol. Especially suitable for Honda, Husqvarna, Kawasaki, Toro, Yamaha and many other small four stroke petrol and diesel stationary engines. It is not recommended for two stroke petrol or two stroke diesel engines.