Sunlube Diesel Engine Oil is a series of heavy-duty lubricants specially formulated for high-output naturally aspirated and supercharged diesel engines operating under severe service conditions. Developed using high-quality base oils and advanced chemical additives, it provides reliable protection against wear, deposit formation, and lubricant thermal breakdown. It is ideal for use in automotive, agricultural, mining, and construction equipment operating in demanding conditions or with high-sulfur fuels. The high Base Number ensures excellent performance and extended oil life, even with high-sulfur diesel fuel. Suitable for older diesel engines in both hot and cold climates, as well as land-based water pump diesel engines under continuous heavy-duty operation.