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Transmission fluid and filter service question

Discussion in '2.5 Gen Tundras (2014-2021)' started by jimg, Dec 17, 2024.

  1. Dec 17, 2024 at 8:43 PM
    #1
    jimg

    jimg [OP] New Member

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    Tundra is a 2016 4x4 with 93k miles on it. Transmission has not had any service work to this point.

    Considering a full fluid flush with filter change. With the miles at 93k would this be recommended?
     
  2. Dec 18, 2024 at 4:12 AM
    #2
    CasperTheFriendlyTundra

    CasperTheFriendlyTundra New Member

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    99% chance it'll be fine with a flush. If a flush dislodged some gunk and takes out your transmission - it was going to fail anyway.

    My preference because I'm cheap' is to do a drain and fill every oil change (10k).
     
    ChesterTundra likes this.
  3. Dec 18, 2024 at 4:18 AM
    #3
    ChesterTundra

    ChesterTundra New Member

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    Second this advice. Learning transmissions seem to do well with gradual changes via the drain and fill method. I suggest doing it along with your next couple oil changes. It’s easy and works well.
     
  4. Dec 18, 2024 at 4:22 AM
    #4
    MadMaxCanon

    MadMaxCanon New Member

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    Too many, but not enough....
    Do a drain and fill one time and see how things go. Don't touch the pan filter, it's just a screen that catches large chunks, leave it alone, it'll cause more harm than good.
     
  5. Dec 18, 2024 at 4:42 AM
    #5
    Reddawg1100

    Reddawg1100 New Member

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    Agreed with drain and fill (IE: no flush). I did mine at about the same mileage at the same time as changing the oil. I’m planning on another drain and fill at the next oil change.
     
  6. Dec 18, 2024 at 8:23 AM
    #6
    jimg

    jimg [OP] New Member

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    I would assume you are just measuring out what came out and just refill with that exact same amount without dropping the pan. for the ones that have done this 3 questions.
    1 Did you go back with Toyota OEM transmission fluid?
    2 Do you remember about how much came out just by dropping the drain plug?
    3. How often should I do this and about how many times do you think it takes to have a good exchange rate from having old fluid to having a mostly clean fluid?
     
  7. Dec 18, 2024 at 8:55 AM
    #7
    Chip_Tundra

    Chip_Tundra New Member

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    There are people who advise not to remove the pan and change the filter. All I have to say is that if you have no indication of rusty and siezed bolts, it's always a good idea to drop and clean the pan, and change the filter and gasket. Also, do this if you have the confidence, experience and equipment necessary.

    Yes, only draining and filling the fluid may get you by, but it's still a half assed way to maintain one of the most expensive components of this vehicle.

    If you feel like you're not able to do these things, go to a qualified transmission shop that can properly service it for you. They will be on the hook if they damage anything.

    You pay to play when it comes to these vehicles. When it comes to maintenance, you also pay to stay.

    While this place is fun for us enthusiasts, do what you feel is in the best interest for ypur multi thousand dollar vehicle. Don't just trust a bunch of forum guys who swear that a particular service isn't needed.
     
  8. Dec 18, 2024 at 9:01 AM
    #8
    Johnsonman

    Johnsonman New Member

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    Yeah measuring and replacing same is smart (checking the level is not difficult either).
    1 - OEM or name brand favorite in WS flavor.
    2 - About 3.5 liters came out of mine but YMMV - again Measure yours.
    3 - I like doing a single D/F every 4th or 5th motor oil change - as you said keeps Fresh along with some of the old to help the wearing clutch packs do their job better. Luck all.
     
    AZBoatHauler likes this.
  9. Dec 18, 2024 at 9:06 AM
    #9
    Chip_Tundra

    Chip_Tundra New Member

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    The level check method is super easy and eliminates guess work.
     
    clownkillerloaf likes this.
  10. Dec 18, 2024 at 9:09 AM
    #10
    jimg

    jimg [OP] New Member

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    One More Question. What about using both methods. Start with just a transmission fluid change. Do it over the next 4k,8k,12k, miles
    Get the transmission conditioned somewhat with new, old fluid, then do a full drop the pan, change out the filter, replace all fluid with new.

    I live in the south so pan bolts should not be an issue.
     
  11. Dec 18, 2024 at 10:33 AM
    #11
    Ericsopa

    Ericsopa Old man and the sea

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    Just completed the third complete replenishing on mine in 225K miles using Amsoil Signature Fuel Efficient fluid. Takes about 3 gallons pumping out the line from the aux XMSN cooler as you fill with fresh, then the final check of the fluid level. Haven't ever dropped the pan or changed filter screen. During normal acceleration, you wouldn't even know the tranny is shifting if not for hearing and observing engine RPMs.
     
  12. Dec 18, 2024 at 10:37 AM
    #12
    AZBoatHauler

    AZBoatHauler SSEM#140 / 2.5 gen plebe

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    It isn’t a rust issue with the bolts - it’s galvanic corrosion that makes them break.
     
  13. Dec 19, 2024 at 8:57 AM
    #13
    clownkillerloaf

    clownkillerloaf New Member

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  14. Dec 19, 2024 at 9:09 AM
    #14
    nobodyintexas

    nobodyintexas What?

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    Whatever this forum told me to do

    This.

    do y'all change your motor oil without checking the level? hell no.

    then, check the damn level when you do a drain & fill on the trans.




    and Merry Christmas!
     

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