Maxima SynBlend Engine Oil Semi-synthetic, ester-based 4-stroke engine oil designed to provide optimum protection, peak performance and positive clutch feel. Surface-active formulation provides excellent film thickness and viscosity stability for all operating temperatures. Advanced, proprietary additive system keeps your engine running clean, trouble-free and extends the life of the machine. Features High-performance, synthetic-blend, ester-based formula with a viscosity-stable advanced additive system. Contains 50 synthetic compound Jaso Ma2, API Sl/Sj/Sh/Sg