MAG 1 full synthetic universal 2-cycle oil is formulated for great engine protection and low smoke with 100% pure full synthetic base oil and high-performance additives. Designed for use in high-performance air-cooled 2-cycle engines such as lawn mowers, string trimmers and chain saws. Small engines have evolved dramatically, requiring highly specialized fluids for unique applications. One brand has evolved right alongside - MAG 1. Only the most advanced oil meets the difficult challenges of effectively balancing performance, strength and durability.