Comma's semi-synthetic oil is tailored for high-revving 4-stroke engines, providing enhanced performance and protection for motorcycles and similar vehicles. It ensures smoother operation and longevity, even under demanding conditions. This semi synthetic formulation is for use in high performing air and water cooled 4 Stroke motor bike and other high revving engines. Comma Oil & Chemicals Ltd is a world class manufacturer and supplier of automotive lubricants, chemicals and ancillaries. Comma branded vehicle-specific and manufacturer-approved products for passenger cars, trucks, buses and motorcycles.