Semi-Synthetic Oil EconTech 15W40 API CF-4/SG Engineered for diesel and gasoline engines required API CF-4 performance Outstanding deposit control for cleaner engine Aisin EconTech Semi Synthetic 15W40 Motor Oil is a high performance, multigrade diesel engine oil specifically built to lubricate wide range of diesel and gasoline engines requiring API CF-4 performance operating under severe operating condition. Application: Mixed fleets of diesel engines (high-speed, four-stroke, turbo-charged or naturally aspirated) Commercial road transport including the heavy trucks, buses, stop and go vehicles, off-highway vehicles Heavy construction equipments including escavator, wheel loader, forklift and dozer Small diesel engines in marine service Generator sets Powershift transmission