XD50 performance enhanced synthetic blend oil that meets the specific demands of direct injection and water cooled 2-cycle Outboard engines that specify TC-W3 certified oils. - contains carbx combustion cleaner to keep carbon in suspension and away from critical components - protects against wear with superior lubricity - reduces smoke for cleaner operation use XD50 in high load and performance applications for greater dependability, reliability, and reduced maintenance. 1 gallon.