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Probably a silly question but, what is the difference between a 2 and 4 stroke motor? I have a 1984 115Hp Evinrude but not sure what kind of oil to mix with the gas.<br />Thanks,<br />Arrow
2 stroke oil at 50 to 1 mix.2 stoke motor uses gas and oil mix were as a 4 stoke does not. thats the very short version.im sure somebody will expand on the story.
2 stroke = fires every time the piston goes up.<br /> The gas/oil mixture lubricates all the moving parts in the crankcase.<br /><br />4 stroke = fires every other time the piston goes up<br /> An oil pump pumps oil from a sump through oil passageways to all the inner bearings and the piston rings
