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What is the correct ratio for mixing oil and gas for my outboard motor?

April 26, 2017Gas mixing motor Oil outboard ratio

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What is the correct ratio for mixing oil and gas for my outboard motor?

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Assuming the engine does not have oil injection, the correct ratio is 50:1 (50 parts gas to 1 part oil). If a 6 gallon portable tank is being used, mix 1 pint (16oz.) of 2-stroke oil with 6 gallons of gas to get a 50:1 mix. Some older outboards (60’s and older) recommend a 25:1 ratio, double the oil of what is recommended today. Back then, 2-cycle oil did not exist so gas was mixed with regular motor oil. With the refined 2-stroke outboard oils, it can be mixed 50:1.