Amsoil Z-Rod Synthetic 10W-30 motor oil is specially engineered for classic and high-performance vehicles. It features a high-zinc formulation to prevent wear on flat-tappet camshafts and other critical engine components, along with a proprietary blend of rust and corrosion inhibibitors for added protection during long-term storage. Z-Rod is designed to perform on the street and protect during long-term storage.
Use Z-Rod in engines requiring either 10W-30, 10W-40 or 20W-50 motor oil.
Z-Rod meets API SL and earlier specifications, allowing for increased levels of anti-wear additives. ZDDP levels in Z-Rod 10W-30 exceed the limits of API SM and newer specifications.