Question:

What is the fuel to oil ratio for a 2 stroke 9.9hp Mercury outboard?

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BTW it's a 2002 model. Also any sugestions for what is the best oil would be appreciated?

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4 ANSWERS


  1. A pint of oil for 6 gal. gas. 50 : 1


  2. Ratio is 50 to1. Any good brand is ok.Make sure it is 2 cycle oil for out boards.!

  3. use merc oil and use the ratio on container

  4. 50 : 1 no matter what kind of oil or how much gas you mix

    dont use quicksilver, super tech, Penzoil, or Mystik outboard oil they all burn to carbon which tends to stick to your motor use a brand that burns to ash it wont stick to your motor as much. the johnson evinrude oil is a good one to use.

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