2-stroke engine oil recommended for 2-stroke lawnmowers, lawn edges, chainsaws and stationary engines. Castrol 2T Self Mix has been developed for two-stroke engines operating under a range of varied conditions. It is recommended for use in the following applications for air cooled 2-stroke engines: LawnmowersLawn edgers Chainsaws Stationary or portable industrial and agricultural units, such as generators, pumps, post hole differs, etc.