Sunlube Diesel Engine Oil 20W-50 is a premium heavy-duty lubricant designed for high-output diesel engines operating under severe conditions. Formulated with high-quality base oils and advanced additive technology, it provides excellent wear protection, oxidation stability, and soot control. It effectively maintains piston cleanliness and prevents bore polishing, ensuring reliable performance and long engine life. Suitable for both diesel and gasoline engines, this mixed fleet oil delivers strong shear stability and supports extended oil drain intervals.