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
Will 5G Impact Our Cell Phone Plans (or Our Health?!)
The Secret Science of Solving Crossword Puzzles
Racist Phrases to Remove From Your Mental Lexicon
Is the Coronavirus Crisis Increasing America's Drug Overdoses?
Fact Check: What Power Does the President Really Have Over State Governors?
Festival of Sacrifice: The Past and Present of the Islamic Holiday of Eid al-Adha