Semi-synthetic multigrade oil. Specially designed for light sport aircraft and microlights with 4-stroke engines. Developed in cooperation with Rotax and fully approved for the Rotax series 912 and 914. Do not use in engines that are designed to use ashless dispersant aviation piston engine oils. i.e. Textron Lycoming, Teledyne Continental, Jabiru. Before ordering check our information on the return of waste oil.