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Thread: ATF in pump?

  1. #1
    Robsauto2's Avatar
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    ATF in pump?

    Hey guys, are you still doing the atf oil in the pump bearings? Or were there problems with that?


    Thanks, Rob


  2. #2
    Happily Self-Employed WFO's Avatar
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    No ATF...synthetic gear oil

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    Robsauto2's Avatar
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    Ahh, I have some Amsoil syn gear oil, that works, thanks!

  4. #4
    Moderator RX951's Avatar
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    yep, synthetic gear oil

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    Moderator OsideBill's Avatar
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    I have the 66V pump so if I understand this correctly I clean out the grease and fill with synthetic gear oil? I am assuming I do this with the drive shaft pointing down. Do I fill to where the cone attaches? how do I gauge the level? and can I also do this with my older 99 GP1200? what are the benefits?

    Thanks Bill

  6. #6
    spud's Avatar
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    MOBIL 1 Synthetic ATF all the way baby.

  7. #7
    I've used the Amsoil heavy duty synthetic with good results.

  8. #8
    Hydrotoys's Avatar
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    I've always done the mixing thing. Fernando outlines it here on the Riva forum.
    http://rivaforums.com/groupee/forums...514#5296045514

    I seen several Yamaha mechanics use marine grease in the pump. BIG MISTAKE. The marine grease is too thick and will not circulate leading to bearing failure. If you decide to use grease. Mix 50/50 Amsoil racing series grease with Amsoil synthetic gear lube. Add more or each until you reach your desired consistency.

  9. #9
    Moderator Insanediego Joe's Avatar
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    Ive always ran synthetic gear oil in my gpr pump and never had a problem. This ski was ran hard and put away wet.

  10. #10
    Moderator RX951's Avatar
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    Royal Purple Synfilm 68

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