Bizol Truck Primary CI-4/SL 20W-50 (200L) is a high-performance mineral engine oil specifically designed for heavy-duty trucks and commercial vehicles. It provides outstanding protection against wear, oxidation, and sludge buildup, ensuring reliable engine performance in demanding conditions. Meeting API CI-4/SL standards, this oil helps extend engine life, improve fuel efficiency, and reduce maintenance costs. Ideal for older or high-mileage trucks, Bizol Truck Primary 20W-50 offers excellent lubrication for tough operating environments.