Same formula and Equivalent to XD50 (779718) 2-Cycle Oil Synthetic Blend Oil for 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 and reduces smoke for cleaner operation Use this oil in high load and performance applications for greater dependability, reliability, and reduced maintenance. This item for sales is a Gallon of XPS Marine Evinrude Johnson TCW3 2-Cycle Oil Synthetic Blend Oil. This is the same forumla as XD50. Perfomanced 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 componentsProtects against wear with superior lubricity Reduces smoke for cleaner operation Use this oil in high load and performance applications for greater dependability, reliability, and reduced maintenance.