i have an 87 glassstream with what i beleave to be an 88 mariner 20 or 25 horse motor. im trying to figuer out the gass -oil mixtuer i have a 5 gallon fuel tank but am not sure how much 2- cycle oil to put in the gass. i also would like assitance in finding out the model of the motor
thank you all for ur time

If you can get the serial number we could help with identifying it. Use a 50:1 oil mix, put 12 oz oil in 5 gallons of gas.

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