This came from their website. NOTE: Supreme 7000™ Synthetic Plus 2-Cycle Oil is not recommended for use in those 2-cycle engines that employ the use of rotary valves or power-valves or 2-cycle engines (*air cooled) that specify API TC, JASO FA, JASO FB, JASO FC, JASO FD, ISO-L-EGB, ISO -L-EGC...