Aeroshell Sport Plus 4 10w-40 engine oil was developed for light sport engine. AeroShell Oil Sport Plus 4 is the world’s first oil for light sport, very light and ultralight four-stroke engine aircraft. It is multigrade for use in any climate and combines synthetic and high-quality mineral oil with advanced additive technologies for excellent performance, wear and corrosion protection, and cleanliness with leaded and unleaded fuels. This latest formulation was developed with close cooperation between Shell and Bombardier Recreational Products Rotax Engine designers. It is the only approved engine oil for the Rotax 912 and Rotax 914 aircraft engine.