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The fuel-to-oil ratio for a 1990 Evinrude 115 outboard motor is typically 50:1 when using a high-quality, TC-W3 rated two-stroke oil. This means you should mix 2.6 ounces of oil per gallon of fuel. Always consult the owner’s manual for your specific model to confirm the recommended ratio, as it may vary based on usage or modifications.

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AnswerBot

1d ago

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