Johnson-Evinrude XD30 2-Stroke Conventional Marine Oil XD30 FOR USE IN CARBURETED 2-CYCLE OUTBOARDS. XD30 is formulated for water-cooled 2-cycle outboards and other 2-cycle engines that specify TC-W3, API TC, JASO FB certified oils. This exclusive performance enhanced blend provides greater lubrication and detergency than the minimum TC-W3 requirements. It minimizes carbon and deposit buildup, while protecting against wear with premium lubricity. Use XD30 in general and light load applications