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Thread: How To: Getrag F23 Transmission Fluid Change

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    How To: Getrag F23 Transmission Fluid Change

    Updated 3/14/2009

    Let me start off with the normal disclaimer:If something breaks by your following this how to guide I cannot in anyway be held responsible for any failures, injuries, or fatalies arising from use of this guide.

    On with the fun

    Tools

    1 Jack and a set of Jackstands(not shown, I assume we all know how to jack up a car and use jackstands)
    8mm Allen Key(Trimmed to fit between Engine Subframe and Drain Plug)
    2 qts Dexron 3 Compatible ATF(I went with Royal Purple Max ATF this time, you will use 1.8qts or 57.6oz)
    Oil Catch Pan
    Long Funnel
    Haynes Manual(not required but helpful if you've never done this)

    Here is the recommended Jackstand setup:


    First find the drain plug on bottom of the tranny between the Engine Subrame and the Transmission, it is a 8mm Allen bolt.


    Last edited by tricky1; 03-15-2009 at 11:46 PM.

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    Using your 8mm Allen wrench and a small cheater bar crack open the drain plug and then thread it the rest of the way out by hand




    Let the fluid run into the oil catch pan or a coffee can if your ghetto then let it drip for a few mins. Then with the engine off shift through every gear to knock any remaining fluid loose then replace the drain plug as tightly as possible

    Go back up top and find the plastic fill cap located under the web of wiring on the drivers side, remove it.


    Take your funnel(mine has a long hose on it.) and run the hose or funnel down into the hole.


    Last edited by tricky1; 03-15-2009 at 11:39 PM.

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    When your sure the funnel is in, start pouring in your ATF. You want to put 1.8 quarts in which is one full quart(32oz) and 25.6oz from the other one. So you want to pour one full quart in then stop between halfway between 8 and 4oz left on the second bottle




    When you have emptied your 1.8 quarts into the fill hole replace the cap and tighten.

    Pat yourself on the back and go take her for a spin, I noticed a slightly better transition between gears and it took less clutch engagement in reverse to keep it going. In all the main advantage to synthetic transmission fluid is prolonging the life of your transmission but there are few if any performance gains from it.
    Last edited by tricky1; 03-15-2009 at 11:43 PM.

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    Nice little write up, the pics really illustrate the procedure.

    You got it pretty much right all the way, the spec for fluid is DEXron III compatible and 1.8qts. I highly recommend(as you used) Mobil1 ATF. You are correct you definitely will notice a difference in shift quality/feel, its real not imagined.

    Good Job!!
    I know stuff about ECOTECS

    Featured Member #002


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    Thanks! I actually did this at about 800 miles and made this post at cobaltss.net, Adam asked me to post it up over here too.

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    nice write up and now its tome to go buy the stuff to do this as i have 50k on the car

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    When is the GM recommended mileage to do this?

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    Get this: NEVER

    This marketing propoganda to keep the "cost of ownership" down so they sell more.

    Dont leave ANY fluid in your car unchanged for more than 50k miles.
    I know stuff about ECOTECS

    Featured Member #002


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    i knew there was some ploy and maven what is your thought on the coolant is it really going to go the 100k they say it will

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    i knew there was some ploy and maven what is your thought on the coolant is it really going to go the 100k they say it will
    cheesecake Quoted Post
    Under ideal conditions....maybe

    The Dexcool is good stuff, I actually have less of a problemwith 100k miles than I do with the whole 5 years.

    Coolant is cheap. 3yrs/50k is what I recommend.

    Brake fluid @ 2yrs.(regardless of mileage)

    Trans fluid @ 30k

    Oil anytime before the index is down to 10%. 3000 miles if you drive in dusty areas.
    I know stuff about ECOTECS

    Featured Member #002


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    Wow, thanks for the info guys.

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