Automotive motor oils can’t handle the demands of high-revving motorcycles. But Valvoline™ 4-Stroke Motorcycle SAE 20W-50 Conventional Motor Oil can. It’s specifically formulated to maximize the engine life of motorcycles and dirt bikes with wet clutch systems. Our proprietary blend of high-quality base oils and advanced additive technology is designed to help your ride achieve peak performance, meeting or exceeding all specifications set by the Japanese Automotive Standards Organization (JASO) and the American Petroleum Institute (API). It provides superior wet clutch protection and helps prevent slippage to ensure smooth shifting and maximum power transfer. While advanced additives safeguard against deposits, corrosion and oil thickening that can decrease performance and longevity. Special cleaning agents and dispersants help protect your engine from combustion by-products that cause corrosion, while shear stable viscosity improvers resist oil film breakdown and silicone additives prevent foaming to help maintain proper lubricating protection. Keep your bike running like a well-oiled machine with Valvoline™, the trusted motor oil brand for over 150 years.