Transmission Fluid Change G23

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  • Scooter G
    1,000 Post Club Member
    • Jan 2022
    • 1320

    • On a Lake in Idaho

    • 2022 G23 ZZ8

    Transmission Fluid Change G23

    Changed out the Transmission Fluid Thursday after we pulled the boat out from a lake run.
    I’ve mentioned it before, but the must have here if you are changing your own fluids is a pressurized oil extractor. I use the 2 Uncles Extractor and it comes with a multitude of different size lines and attachments – Not affiliated and have nothing to compare it to.
    Fluid was hot and came out super-fast with just a few pumps on the extractor. This is the 1st time I have done this, and felt around a little with the extractor hose to make sure I was on the bottom of the trans. I refilled at 1 ½ quarts, and then measured how much was extracted, 1 ½ quarts. The manual indicates 2 quarts, which means I left 16 ounces behind, hmm. Next time, I think I will run a smaller hose to see if I can’t get in a little deeper and measure the output. Open to suggestions if anyone has some thoughts here. In my mind 1 /12 quarts of fresh fluid is better than none.
    Dealer says they did a change out 2 seasons ago with Dexron VI, but that fluid looked pretty dark to me for only 2 Seasons?

    Next time, a little time on the shop vac followed by some air pressure, definitely not the cleanest area in the boat.
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    Pretty straight forward
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    Wasn't sure which funnel was going to fit the bill, but the adjustable measured unit in the middle was by far the best choice.
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    The extractor measure out at 1 1/2 quarts, so I figured out that is what needed to go back in.
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    Top of the full mark, measured without screwing cap down (as per manual)
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    Left some fluid and the funnel in the engine bay. Will check levels again on warm up next trip out.
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    Double checking measurement accuracy of the extractor, and visual inspection of the fluid.
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    Yup, 1 1/2 quarts. Does that fluid look a little dark to you?
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    Manual Instructions .pdf of the process:
    G Trans.pdf

    I hope this helps someone, easy to tackle yourself. Let me know if I missed something, always willing to learn and/or make things easier.

    ~Scooter G.
    Last edited by Scooter G; 05-20-2024, 08:59 AM.
  • Lockem25
    • Oct 2021
    • 53

    • Kentucky

    • 14 g23

    #2
    Easy enough, I just did mine while the floor was out(New ballast pump for aftermarket bags install) definitely not the cleanest area but I dont expect it to be either.

    I was curious how bad it would be to get to with the floor in but it looks manageable!!

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