Exceeds the lubrication requirements of water-cooled outboards and air-cooled engines carrying heavy loads and running at high speeds for long periods of time. Recommended for outboard, water-cooled, and air-cooled 2-cycle engines, including those calling for 100:1 fuel-to-oil ratio, and all air-cooled 2-cycle engines requiring an NMMA/BIA TC-W or TC-W3 certified lubricant. Quart bottle.