Master Pro 2-Cycle Engine Oil is designed for small engines to provide excellent engine protection in both variable ratio injection systems and fuel/oil pre-mix applications. It is pre-diluted to provide easy mixing. It is formulated to ensure fluidity and miscibility at low temperatures. Master Pro 2-Cycle Engine Oil is specifically designed for use in newer high-performance air-cooled engines but can be used in any air-cooled engine where low ash oils are recommended.