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'if the outboard you have is a pre mix model use 50 (fuel):1part (oil) or 16oz. (1 pint of oil) to 6 gallons gas. be sure to use high quality gas, it is much more important to use better gas in your outboard then say your car or lawnmower, this is because your car usally runs at about 1500-2000 rpm compared to 4-6000 rpm in your boat. use good oil, tc-w3 is what to look for on the container, but this does not mean they are good, donot use supertech or other off brands, your bes bet is to use manufactuers oil, (merc is quicksilver, Yamaha is yamalube, ect).

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Q: What is the fuel to oil ratio on most two stroke outboards?
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