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  1. #1
    Deanoo's Avatar
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    Yamalube Or Penrite 10w-40 Racing

    I couldn't find a oil thread page for the yamaha's

    I have a Yamaha fzr sho, im just wondering what oil would be better the original yamalube or the penrite 10w-40 racing??

    I have been using the penrite 10w-40 racing as the ski has 16Ib boost going through it, but would it be better to stick the penrite or go back to the yamalube?


  2. #2
    Guidoo's Avatar
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    If it has friction modifiers and you're running factory supercharger, no. It will cause the sprag on the SC drive to slip.

  3. #3
    AWA MEMBER
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    I use the Yamalube

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  5. #4
    800AMSOIL4U's Avatar
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    Here is the information on the AMSOIL*10w-40 Synthetic Marine Oil. It does not have friction modifiers. It gets shipped to your front door. This is the link for the owner of this site GreenHulk Jerry.
    Helps keep this site going.

    http://www.amsoil.com/redirect.cgi?z...storefront/wcf

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  7. #5
    Guidoo's Avatar
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    The next oil change will be with Amsoil. Don't get me wrong there's nothing wrong with Yamalube and is currently what I'm using in both of our FZ'S. I prefer a synthetic oil.

  8. #6
    Deanoo's Avatar
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    What fricton modifiers are they exactly? So i can check with the penrite oil

  9. #7
    Guidoo's Avatar
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    They reduce friction. Simple as that.

  10. #8
    Deanoo's Avatar
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    I mean for the penrite oil. Which fricton modifiers are ther that shouldnt be in the oil?

  11. #9
    800AMSOIL4U's Avatar
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    The oil needs to be a MA/MA2 spec oil for the clutch spec.

  12. #10
    Deanoo's Avatar
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    The ACEA number on the oil bottle?
    Last edited by Deanoo; 01-21-2015 at 12:31 AM.

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