Introducing AMSOIL Z-ROD 10W-40 AMSOIL Z-ROD 10W-40 is a premium synthetic motor oil. It’s designed for classic and high-performance vehicles. This oil ensures engines run at their best. What Makes AMSOIL Z-ROD 10W-40 Special? AMSOIL Z-ROD 10W-40 is 100% synthetic. It’s made for older engines and performance cars. This oil provides excellent protection and performance. … Continue reading AMSOIL Z-ROD 10W-40 100% Synthetic Motor Oil