2 Stroke oil recommended by Rotax. Suitable for the Rotax 377, 447, 503 and 582 Engines. Synthetic-based high performance 2-stroke oil for use in all air and liquid cooled 2-stroke engines. This oil can be used is microlight engines with oil injection or premix systems and is self mixing with leaded and unleaded fuels. It is dyed for easy identification in fuel.