Premium Plus TCW3 2-Stroke Oil 858031Q01 is for use in pre-mix, oil-injected, carbureted or electronic fuel injected (EFI), 2-cycle liquid cooled marine engines requiring the use of TC-W3 oil. This Quicksilver 2-cycle oil meets or exceeds outboard or personal watercraft manufacturer warranty requirements. Quicksilver outboard 2-cycle oil is made from a synthetic blend that is formulated to prolong engine life. This TC-W3 certified Quicksilver Premium Plus 2-cycle oil (one gallon bottle) is formulated to burn clean and maximize performance as well as maintain peak engine performance under strenuous conditions and provide superior lubrication. The Quicksilver brand is the leader in delivering uncompromising engine oils, parts and accessories to the marine industry for over 65 years. Quicksilver is the premier supplier of Mercury Marine Original Equipment replacement engine parts, oils, and accessories, but also works to serve all Original Equipment brands in the marine and powersports industries. It has earned a loyal following by providing the highest quality products that are tested through some of the most rigorous environments and testing procedures. No aftermarket company comes close to the level of research and design as Quicksilver; buying Quicksilver is buying performance, protection and peace of mind.