What Is the Proper Fuel-Oil Mixture for a Mercury 15-Hp Outboard?
Last Updated Apr 3, 2020 6:50:43 AM ET
Two-stroke 15-horsepower Mercury outboard motors require a 50:1 fuel-to-oil mixture. However, not all 15-horsepower Mercury outboards are two-stroke engines; many newer models are four-stroke designs. Four-stroke engines have a lubrication system similar to a car, with a separate oil reserve, and don't use pre-mixed fuels.
It is important to use the correct fuel for each specific engine type. Two-stroke engines do not have a valve train with valves, camshafts, and chains or belts. The oil in the fuel mixture lubricates the engine. A four-stroke engine has an oil pan and oil filter and needs oil changes periodically for smooth operation.
More From Reference
What Does the Executor of a Will Do?
What Are the Age Limit Restrictions for IRA Contributions?
What Is an Ex-Dividend Date, and How Does It Affect Your Stocks?
What Is the Difference Between Salary and Wages?
How Many Minutes of Daylight Do We Gain Each Day? And Other Daylight Saving Time Facts
Understanding SSI: Supplemental Security Income Basics for New Applicants