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Thread: GP125 Trans oil - How much?

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    GP125 Trans oil - How much?

    My Suzuki GP125 leaks so is probably due for some fresh oil. How much do I put in? What viscosity? (though I'll probably just get the cheapest stuff I can)

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    Quote Originally Posted by Coyote View Post
    My Suzuki GP125 leaks so is probably due for some fresh oil. How much do I put in? What viscosity? (though I'll probably just get the cheapest stuff I can)
    800mls 20-40w.

  3. #3
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    Quote Originally Posted by Crasherfromwayback View Post
    800mls 20-40w.
    Cheers. Off to Supercheap!

    How did you find that out anyway?

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    Quote Originally Posted by Crasherfromwayback View Post
    800mls 20-40w.
    WTF?? The GP125 is a 2stroke. The oil will be a straight weight oil like 80w transmission/wet clutch oil. Or if your wanting cheap then just use ATF fluid

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    Quote Originally Posted by Coyote View Post
    Cheers. Off to Supercheap!

    How did you find that out anyway?
    From our Genuine Suzuki Workshop manual.

    Quote Originally Posted by T.W.R View Post
    WTF?? The GP125 is a 2stroke. The oil will be a straight weight oil like 80w transmission/wet clutch oil. Or if your wanting cheap then just use ATF fluid
    Hate to tell ya Bill...while you can use atf no problem at all (I used to in some of my 2 smokers)...a 20-40w normal motor oil is what bikes of that vintage normally recommended. I'm quite aware of the fact a GP125 is a two stroke.

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    It also says it on the side of the motor!! Tada!

    Coyote, where does it leak from?


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    leak? my guess is sprocket seal, there is also an o-ring behind the sleeve it runs on that needs replacing. All can easily be done in situ.
    Don't you look at my accountant.
    He's the only one I've got.

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    Quote Originally Posted by Sketchy_Racer View Post
    Coyote, where does it leak from?
    My guess would be a split in the engine cases...

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    Quote Originally Posted by Skunk View Post
    My guess would be a split in the engine cases...
    Shhhhhhhhh Don't tell him that .

  10. #10
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    Quote Originally Posted by Coyote View Post
    My Suzuki GP125 leaks
    Fix the bloody leak while you are doing it!
    That way you only have to buy one lot of oil.
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