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Transmission fluid fill amount V6 vs 4cyl

Discussion in '3rd Gen. Tacomas (2016-2023)' started by Nandu, Feb 9, 2025.

  1. Feb 9, 2025 at 9:18 AM
    #1
    Nandu

    Nandu [OP] Member

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    Per the technical manual attached, for drain and refill, fill amount is 3.3 quarts for the V6, and 1.6 quarts for the 4cyl. Why? When draining a 4cyl, should I expect 1.6 quarts to come out if it was at the proper level? Refill with 2 quarts then drain excess?
     

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    Greg-tacoma likes this.
  2. Feb 9, 2025 at 9:33 AM
    #2
    mquibble

    mquibble Well-Known Member

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    Don’t be overly concerned with what comes out to determine how much to refill with. Allow the overflow tube to tell you when to stop but make sure it is at the correct temperature. If memory serves me correct it is around 102ish.
     
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  3. Feb 9, 2025 at 9:38 AM
    #3
    MGMDesertTaco

    MGMDesertTaco Come on, live a little...

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    If you lift the front end of the truck up you can get a little more to drain out. The important part as mentioned above is to ensure the correct amount is added back in and checked at the correct temperature range.

    Ideally measure whatever drained and add back 1/2 quart to 1 quart, then check at correct temperature and allow excess to drain. These vids are for a 3rd gen, but it's the same concept.

    https://www.youtube.com/watch?v=rNqYpEpmUng

    https://www.youtube.com/watch?v=tFMy2CrWSQI&t=0s
     
    mquibble and Chew like this.
  4. Feb 9, 2025 at 10:56 AM
    #4
    Toycoma2021

    Toycoma2021 Well-Known Member

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    I recall reading somewhere that the 4 Cylinder engine trans has a different valve body and possibly torque converter. Would not swear by any of this.
     
  5. Feb 9, 2025 at 10:58 AM
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    Bishop84

    Bishop84 Well-Known Member

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    I put 4 liters (qrts?) in every truck, its called an overflow for a reason. You run it and bring it up to temp, this allows the new fluid to mix with the old fluid.

    It's way easier to put in too much than to have to top off while its running.
     
  6. Feb 9, 2025 at 11:51 AM
    #6
    kahanabob

    kahanabob Well-Known Member

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    just to add on, I would never crawl under a running truck
     
  7. Feb 9, 2025 at 12:35 PM
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    Toycoma2021

    Toycoma2021 Well-Known Member

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    LOL. Then you won’t be doing this procedure as it requires a running engine.
     
  8. Feb 9, 2025 at 2:12 PM
    #8
    mquibble

    mquibble Well-Known Member

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    Please explain how to do this then.
     
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  9. Feb 9, 2025 at 3:18 PM
    #9
    trailmeisterjoe

    trailmeisterjoe Well-Known Member

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    I am assuming you lift it with a jack (not ramps) and then lower it down to refill? Drains out more and then allows you to add in more?
    Joe
     
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  10. Feb 9, 2025 at 6:14 PM
    #10
    MGMDesertTaco

    MGMDesertTaco Come on, live a little...

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    Just like the video shows, lift the front end with a jack.

    When I refill I leave the truck on 4 rhino ramps (jack stands would work too) as long as the truck is level. I can't squeeze under the truck otherwise. :rofl:

    If you're really concerned about the truck being level you could place a construction level over the bedside of the truck and use a jack to lift the truck as needed. Assuming the driveway or whatever wasn't level.
     
  11. Feb 9, 2025 at 6:25 PM
    #11
    mquibble

    mquibble Well-Known Member

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    I use rhinos for the front on a slight incline with rears chocked. Gives me plenty of room and the truck is level. No problem keeping the truck running this way.
     
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  12. Feb 9, 2025 at 9:49 PM
    #12
    rtzx9r

    rtzx9r Well-Known Member

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    The trans needs to be at a very tight temp to check the level, only from the truck running. When it hits that temp you open the overflow tube drain. While the truck is running.

    I’ve done it several times on mine while it’s on 4 jackstands and with e brake applied.
     
  13. Feb 10, 2025 at 3:52 AM
    #13
    Mallcrawler20

    Mallcrawler20 Well-Known Member

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    If you are unsure on the procedure … I would take it to a shop to have it done . This is the transmission and u don’t want to screw it up.
     
  14. Feb 10, 2025 at 10:58 AM
    #14
    kahanabob

    kahanabob Well-Known Member

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    I have no idea, it is something i would never attempt to do myself.
    I guess a shop that could put it on a lift and lift it up like a foot.
    I am going to be 80, so this old fart is not crawling under a running truck.
     
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