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Oil for Yamaha 4 stroke 90 hp

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  • #1

    Oil for Yamaha 4 stroke 90 hp

    Does the oil have to be changed often, even if I use the expensive synthetic stuff?

    Does Yamaha make a motor where the oil does not have to be changed, just topped off?

    Please reply to my email.....ellissg1@att.net
    Last edited by ellissg1; 07-27-2014, 04:39 PM. Reason: Add request
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  • #2
    so far, no one has invented magic oil.
    depending on your area you can most likely use any marine rated FWC four stroke oil in a 10w-30 or a 10w-40.
    some use synthetic yamaha doesnt specifically recommend it.
    they do recommend changing the oil at 100 hr or once per year intravels.

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    • #3
      Originally posted by ellissg1 View Post
      Does the oil have to be changed often, even if I use the expensive synthetic stuff?

      Does Yamaha make a motor where the oil does not have to be changed, just topped off?

      Please reply to my email.....ellissg1@att.net

      Buy an old 2 stroke and just add 2 stroke oil if that is what your are looking for instead of a 4 stroke

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