Motul Classic Straight Weight OilEngineered for vintage vehicles, Motul's SAE 50 mineral oil leverages modern technology to protect classic engines. It is formulated with a high concentration of ZDDP (Zinc Dithiophosphate) to provide essential anti-wear protection for the flat-tappet cams common in these models. The low-detergent mineral base is specifically designed to be compatible with older cork and paper gaskets, preventing leaks. This oils robust viscosity ensures stable pressure and a consistent lubricating film in high-temperature engines, particularly air-cooled V-twins, while its enhanced adherence properties protect vital components during start-up after long periods of storage, making it an ideal choice for heritage motorcycles like Harley Shovelheads and older.Features: High ZDDP Content: Provides critical anti-wear protection for flat-tappet cams Protects Vintage Seals: Low-detergent formula prevents leaks in original cork and paper gaskets High-Heat Stability: SAE 50 viscosity maintains stable oil pressure in hot, air-cooled engines Immediate Start-Up Lubrication: Enhanced adherence clings to parts, even after long storage periods Classic Engine Formula: Mineral monograde oil specifically for older vehicle engines Heritage Motorcycle Approved: Ideal for Harley-Davidson Shovelheads and older models Not designed for wet clutches