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15k miles Transmission drain and fill

Discussion in '2.5 Gen Tundras (2014-2021)' started by Joe333x, May 1, 2021.

  1. May 7, 2021 at 2:36 PM
    #121
    Melikeymy beer

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    So every time a service guy parks his Chevy or Ford truck in my driveway they leave a pool of fluid to clean up. Also, when I get to my campsite and a Chevy or Ford has been parked on the pad I have to get some oil absorbent to soak up the mess. Is this transmission fluid or engine oil? Is this the right thread to ask this question?
     
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  2. May 7, 2021 at 5:20 PM
    #122
    BTBAKER

    BTBAKER DIFFERENT NAME. SAME JUNK.

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    The dudes that wrote the manual for my truck are telling me to drain and fill at 60,000. I sure hope my tranny can hang on for the next 12,000.....
     
  3. May 7, 2021 at 5:24 PM
    #123
    BTBAKER

    BTBAKER DIFFERENT NAME. SAME JUNK.

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    I’ll try to send mine in when I hit 60,000. I tow a boat and a light camper. I’d be willing to bet that it comes back just fine.
     
  4. May 7, 2021 at 5:51 PM
    #124
    SSPey

    SSPey .

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    5 pages into this one ... just a small reminder that the thread was started by a 2019 owner
     
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  5. May 7, 2021 at 6:01 PM
    #125
    Joe333x

    Joe333x [OP] Member

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    so the thing that's weird is the manual tells you to replace the fluid at 60,000 which is why I got the idea to start doing drain and fills at about 15,000 so that way there by the time 60,000 comes I'll have done four which should give me fresh fluid by 60 because the manual doesn't really state if it wants you to replace all of the fluid or just do a drain and fill and I find doing a drain and fill must easier than a complete fluid exchange.
     
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  6. May 7, 2021 at 6:40 PM
    #126
    C.I.

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    And it will. Toyota transmissions are tough as hell, especially since our truck's transmission is a 2007 design, dinosaur technology by todays standards... means it's good!.

    Can you blame the guy for wanting his truck to last a long-problem free-life?
     
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  7. May 7, 2021 at 6:55 PM
    #127
    SSPey

    SSPey .

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    Not at all. I think you misinterpret my point. Pre-2019 confidence in the service intervals that are expressed in this thread may not apply to the OP (nor to my 2021 that tows a boat)
     
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  8. May 7, 2021 at 7:18 PM
    #128
    C.I.

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    Ah! I totally did. My apologies :)
     
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  9. May 7, 2021 at 7:25 PM
    #129
    TILLY

    TILLY Gently Used Member

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    Wasn't there a thread here last year about the color of trans fluid when drained that looked horribly dark in certain light, but came back from the lab perfectly fine? Still looking.
     
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  10. May 8, 2021 at 6:07 AM
    #130
    farnsrocket

    farnsrocket New Member

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    Great thread! I’m a definite believer that this is a good thing to do! Need to do this on my new to me 14’ Sequoia w/114k miles soon!
    I had an 02’ Sequoia and it was much easier to do since it had a dipstick. Here is my 02’s fluid after 5 drain and fills at 156k miles. After each drain and fill I would drive the truck around a country block a couple of miles to get the torque converter moving then do another drain and fill.
    [​IMG]
    [​IMG]
    [​IMG]
     
    Last edited: May 8, 2021
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  11. May 9, 2021 at 8:58 PM
    #131
    Joe333x

    Joe333x [OP] Member

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    Heres a random question that just came to me. I honestly have never ever used a fumoto valve but since I'm not planning to do ATF drain and fills like oil changes and measuring the fluid, I thought about how easily it would be to do it with one of those fumoto valves with a nipple on it. Question is, does anyone know if they make one that fits? If no one knows, next time I do an oil change I may see if the 2 bolts can be interchanged.
     
  12. May 9, 2021 at 9:16 PM
    #132
    Kanobi13

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    What?
     
  13. May 9, 2021 at 9:17 PM
    #133
    Joe333x

    Joe333x [OP] Member

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    What dont you understand? When you do a drain and fill its only 4 quarts. A full replacement of fluid is around 12.
     
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  14. May 9, 2021 at 9:22 PM
    #134
    farnsrocket

    farnsrocket New Member

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    I get it!
     
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  15. May 9, 2021 at 9:50 PM
    #135
    Kanobi13

    Kanobi13 New Member

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    So 45 k on the 4 quarts you put in at 15 is fresh? 30k on the 4 quarts 15 on 4 quarts and a fresh 4 quarts at 60 equals all fresh fluid?
     
  16. May 9, 2021 at 9:56 PM
    #136
    Joe333x

    Joe333x [OP] Member

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    So if Toyota expects you to replace 12qt at 60k(not really sure since most dealers only do drain and fills anyways which is 4qts). Ill replace 4qt at 15k(done), 30k, 45k and 60k. Thats 16 quarts by the time I hit 60k and would continue with 15k intervals or possibly less just depends on what I do for mileage in the year, Im not trying to be exact since this is already well past normal maintenance.
     
  17. May 9, 2021 at 11:22 PM
    #137
    Kanobi13

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    I smell the burnt fluid are cooking with now!
     
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  18. May 10, 2021 at 2:46 AM
    #138
    farnsrocket

    farnsrocket New Member

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    Not really, you’re actually removing about a third of that 1st 4 quarts at each drain and fill and continue to replace a 1/3 of the all the old fluid as a whole each time you do a drain and fill.
    I think that’s better than leaving all 12 quarts in for 60k miles.
     
  19. May 10, 2021 at 4:00 AM
    #139
    hagrid

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    What size tires were they running without any rubbing? I'll also need to know their average MPG and total area in square kilometers of their auxiliary transmission coolers.
     
  20. May 10, 2021 at 5:06 AM
    #140
    T-Guy69

    T-Guy69 New Member

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    Three other people recommended this. I'll be the 4th. Since your in the 3rd Gen forum, your transmission may still be under warrantee. Using the Blackstone report could be a way to prove your point to Toyota if the transmission dies prematurely. I know its a Toyota, but your transmission fluid is so dirty, it makes me wonder if you have an issue.
     
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  21. May 10, 2021 at 5:09 AM
    #141
    Bammer

    Bammer I'm disinclined to acquiesce your request.

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    I don't think we judge an oil solely on color, test it and then make decisions based on that.
     
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  22. May 10, 2021 at 5:16 AM
    #142
    JohnLakeman

    JohnLakeman Burning Internet Daylight

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    True on engine oil because of combustion product blow-by that can darken the oil without changing the oil's properties.

    I wouldn't depend too much on that axiom in the case of transmission fluid. The only sources of darkening in transmission fluid are heat cooking and clutch wear materials. In the case of transmission fluid, color and smell have always been strong indicators of condition. @empty_lord has said that Toyota fluid darkens fast, but 15K miles?
     
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  23. May 10, 2021 at 7:07 AM
    #143
    empty_lord

    empty_lord They see me rollin'

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    Yes it darkens fast, but it rarely ever smells burnt. It’s a lightweight fluid. So I’m sure that plays into it
     
  24. May 10, 2021 at 7:13 AM
    #144
    Professional Hand Model

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    Rhetorical Questions pertaining to the ‘Old Fluid is Good’ thought process gaining traction here:

    1) I wonder why my Transmission shifts better/smoother after a drain and fill?

    2) I wonder why heat/slipping cause a transmission to wear out?

    3) Why does a 1st Gen Transmission Cooler cool so well I need a Warmer?:boink:
     
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  25. May 10, 2021 at 7:49 AM
    #145
    empty_lord

    empty_lord They see me rollin'

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    Your truck uses the older t-if. WS is a lightweight “gas saving” fluid. It reacts differently to the old school stuff
     
  26. May 10, 2021 at 8:12 AM
    #146
    Rocko9999

    Rocko9999 New Member

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    There has to be definitive info on their transmission service procedure. My money is on drain and fill 4 qts.
     
  27. May 10, 2021 at 8:13 AM
    #147
    empty_lord

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    Pretty much. We only charge for the drain and fill amount. Flushing these things opens a can of worms with fluid adjustment unless we have the truck for the whole day.
     
  28. May 10, 2021 at 3:10 PM
    #148
    SSPey

    SSPey .

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    I like this volume-for-volume approach, simple, and I’d hope that a “lifetime fluid” would come properly filled from the factory. Also, the 0.27 quart that was guessed for adding back residual fluid represents only 2% of total ATF volume, so can’t introduce much error. I do notice that you used a balance to weigh something. What? Does it matter that the density of ATF = 0.85 ? I like that the 1 gallon jugs are filled equally, gets around any density issues.
     
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  29. May 10, 2021 at 6:32 PM
    #149
    vtl

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    It does not work that way.

    Fresh ATF has friction modifier that allows a bit of slip in a partially locked torque converter, but lets the clutches fully lock when the pressure increases. The modifier resides in the upper layer of clutch and it wears out naturally along with the clutch. The uncovered fresh friction material on the clutch then again gets a treatment from ATF. With time, ATF looses most of it friction pack, transmission starts to shudder and jerk. That's the time for ATF replacement, or even do it earlier to limit clutches wear.

    Worn clutch material is suspended in ATF, it is one of the properties and design goals of ATF. It slowly gets deposited inside transmission, like in valve body passages, so it's a good idea to replace ATF even before it looses its friction property. Lots of people add external fine particulate filter like Magnefine to fight just that. If ATF is not overheated, it stays intact much longer if the worn material is filtered out.
     
  30. May 11, 2021 at 8:50 AM
    #150
    Rocko9999

    Rocko9999 New Member

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    First time hearing about the Magnefine filters. They look very interesting. Thanks for the info.
     
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