Sunlube Diesel Engine Oil SAE 50 is a high-performance heavy-duty lubricant specially formulated for high-output naturally aspirated and supercharged diesel engines operating under severe conditions. Produced from high-quality base oils and advanced additive technology, it provides exceptional protection against wear, deposits, and thermal breakdown. This oil is recommended for use in automotive, agricultural, mining, and construction equipment where engines are exposed to heavy loads and high operating temperatures. It is also ideal for older diesel engines and stationary units such as land-based water pumps. Its high Base Number ensures optimal performance and protection when using high-sulfur diesel fuels, maintaining engine cleanliness and extending oil drain intervals.