Premium KTech engine oil is uniquely formulated for your machine. Longer engine life. Cleaner operation. Refined in the USA. KTech engine oil gives superior performance for the engine you depend on. Features: Meets JASO MA API Service CJ-4 and SL KTech 4-cycle oil contains a zinc additive which prevents excess wear on engine parts Protects against excessive viscosity decrease at high temperatures Proven oil consumption control in heavy-duty service Contains anti-foaming and anti-shear agents Excellent shear stability assures stay-in-grade performance Manufactured with the latest additive technologies to provide superior performance in both diesel and gasoline engines (The 20W-50 oil is also certified in CJ-4 for use in diesel engines) Designed to keep today's high-performance, low-emission engines clean and operating at peak efficiency 20W-50 synthetic blend oil provides ultimate performance and protection in both low and high temperature applications, including cold-weather startup