Motor oil for 2 and 4 stroke engines is readily available at discount stores or automotive stores. The price is slightly cheaper than the OEM boat engine oil so we often get the question: “Can I safely use aftermarket or generic oil in my outboard motor?”
Always use Brand Name OEM Oil for your motor.
The manufacturers of the generic oils say their oils are safe for your 2 or 4 stroke outboard motor. While this may be true but is it the best oil for your outboard?
Budget lubricants usually use cut rate ingredients to achieve a low price point. They have also manufactured this oil to work with a chain saw, weed eater, lawn mower, car and more. Since they cover many different motor types, the additives needed for your specific outboard motor are missing. Genuine Mercury and Evinrude/Johnson lubricants are blended with the highest quality base stock and additive packages to meet the demands demands of the 2-cycle or 4-cycle outboard engine. These additives prevent corrosion, reduce foaming and keep your engine properly lubricated. Corrosion is like cancer to your motor; do everything you can to prevent corrosion.
Always choose genuine OEM boat motor oil specifically manufactured for your engine for optimum performance. A few extra dollars now could prevent huge repair bills later.
Review Recommended Care from Mercury for your Mercury Engine.