Sunlube Diesel Engine Oil is a range of heavy-duty lubricants formulated for high-output naturally aspirated and supercharged diesel engines operating under severe conditions. Produced from premium base oils and advanced chemical additives, it provides excellent wear protection and prevents lubricant thermal breakdown. It is recommended for use in high-performance diesel engines in automotive, agricultural, mining, and construction equipment, especially where high-sulfur fuels and demanding service conditions exist. Its high Base Number ensures strong protection and extended drain intervals even when operating with high-sulfur fuels. Suitable for older diesel engines in both hot and cold climates, as well as land-based water pump engines running continuously under heavy load.