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  1. #1
    cbrich's Avatar
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    New to the forum, and 4 stroke PWC

    Howdy guys, I am new and have purchased my Sea Doo RXT a several weeks ago. I am looking at upgrades but not going all out just yet, what would ya'll recommend for upgrades this winter?

    I am currently thinking about swapping out the ceramic SC washers for steel, and modifying the waterbox.

    Also why does Sea Doo recommend a mineral oil base oil instead of synethic oil for these engines?


  2. #2
    Hydrotoys's Avatar
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    Welcome to the forums, cbrich.

    Do the steel washers.

    After that, keep doing the reading, and make up your mind on where you want to go. Ski mods are a fluid item, and rarely will your first mod be your last.

    The mineral oil was used instead of synth due to the clutch slippage issue with the supercharger.

  3. #3
    Will work on YOUR ski for FREE! GeoRXT's Avatar
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    Welcome to the forum!

    Do not use synthetic on these engines! I have always been told to use the Bombardier factory oil.

  4. #4
    cbrich's Avatar
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    Hydrotoys I will keep that in mind with mods.

    I started to look more at my ski and try to get an idea of were the major components are at, like the waterbox, SC, oil filter and other. I have one question on where or not I can remove this item. I have a tube that runs from the support bracket under the front seat, and it goes nowhere. Can I completely remove this tube and what is the purpose of it?

    Also I have only 2 hours on my ski, should I have the dealer do the first oil change (for winter since I won't get to 10 hrs) or should I forget the dealer and do it myself (I have the equipment to do it myself).

  5. #5
    Site Admin MikeTrin's Avatar
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    That tube does 2 things, directs cold air down to the bottom and prevents water from entering the ski if it turns upside down in the water. I'd leave it on there.

    The friction modifiers in the synthetic oil causes the clutch to slip over time. Stick with what they recommend but try to change it more often. I am not sure what the interval is but I try to change the oil ever 25 hours and the filter every 50.

    Be sure to check out the how-to forum for tons more useful info on the 4-tec skis.

  6. #6
    Will work on YOUR ski for FREE! GeoRXT's Avatar
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    You can the oil change yourself for now if you're gonna winterize it. Just make sure to take it to the dealer for the 10 hour service whe you get to it so they have it in the system....Mainly for warranty purposes...

  7. #7
    Welcome to the board!

    Congrats on your new ski!
    I would def get those ceramic out of there and just put some time on it...
    Start small if you must mod air filter kit etc. Just enjoy riding your ski...PR...

  8. #8
    Moderator RX951's Avatar
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    Welcome to the forum

  9. #9
    Site Admin Green Hulk's Avatar
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    Welcome to the forum

  10. #10
    lugnut's Avatar
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    Welcome to the forum
    about steel washers....
    This is your engine on ceramics
    Go to steel
    Jerry can hook ya up

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