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how many ounces of 2-cycle oil do i add to 6-gallons of gas for a 2-stroke outboard

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asked Jan 24, 2014 by Chase1485 (120 points)

1 Answer

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It depends upon the manufacturer and age of your o/b engine. Most older engines take a 50:1 mixture of gasolene to oil, so 64 oz/gal times 6 gals = 384 oz. Divide that by 50 and the result is approx 8 oz of 2 cycle oil.  Newer engines often call for a 100:1 mixture, so it would be 4 oz of oil for 6 gals of gasolene. Really old or low technology engines (e.g. a British Seagull), might take as much as 8 oz/gal.
answered Jan 26, 2014 by Sailbad the Sinner (3,940 points)