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Transmission cooler install help

Discussion in 'Towing' started by t3mpo, Feb 14, 2017.

  1. Feb 14, 2017 at 3:47 PM
    #1
    t3mpo

    t3mpo [OP] Well-Known Member

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    ok so my next mod after the fog lights will be the tranny cooler. On the 16 2.7 there is no dip stick. So I have a few questions.

    1. How do I know how much fluid to add without guessing?

    2. How do I know which hose is the supply and return of the fluid coming from the radiator? (If you have pics or illustration than awesome!)
     
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  2. Feb 16, 2017 at 4:20 PM
    #2
    Indy

    Indy Master of all I survey.

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  3. Dec 28, 2017 at 9:44 AM
    #3
    srdoublecab2.7

    srdoublecab2.7 SRlifted&gifted

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    Stock for a minute
    i am trying to figure this out too.

    a DIY for the 3rd gen with no tow package transmission cooler install would be great!
     
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  4. Dec 28, 2017 at 9:46 AM
    #4
    anthony250f

    anthony250f Well-Known Member

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    Once you figure out which line is supply it will be easy to route the hoses to the new cooler
     
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  5. Dec 28, 2017 at 9:47 AM
    #5
    srdoublecab2.7

    srdoublecab2.7 SRlifted&gifted

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    because the transmission cooling system runs through the radiator?
     
  6. Dec 28, 2017 at 9:51 AM
    #6
    anthony250f

    anthony250f Well-Known Member

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    It should....I added another cooler
    28BF9ECB-EE04-4007-95C6-FED3D83FFD30.jpg
     
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  7. Dec 29, 2017 at 6:18 AM
    #7
    Indy

    Indy Master of all I survey.

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    The metal lines at the bottom of the radiator are transmission lines.
     
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  8. Dec 29, 2017 at 6:28 AM
    #8
    srdoublecab2.7

    srdoublecab2.7 SRlifted&gifted

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    Thank you!

    After reading and researching I finally figured it all out!

    Ordered the following
    Hayden 678
    Wix magnetic filter 58964
    Hayden mounting kit
    Rubber flash washers
    Extra house clamps
    Extra 3/8 hose
     
  9. Dec 29, 2017 at 8:07 AM
    #9
    anthony250f

    anthony250f Well-Known Member

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  10. Dec 30, 2017 at 7:02 AM
    #10
    StuckinOhio

    StuckinOhio Well-Known Member

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    Anthony,
    I am running the B&M 70268 (similar size to yours) and deleted the factory cooler.
    Like the filter idea, may have to add that to mine
    My transmission takes forever to heat up to normal operating temp in the winter.
    Do you have any issues over-cooling running duals?
     
  11. Dec 30, 2017 at 7:07 AM
    #11
    gearcruncher

    gearcruncher Well-Known Member

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    Lets have a peek at what transmission coolers do
    TRANSMISSION COOLERS
    If you do not have a transmission cooler on your truck and you plan to tow or haul heavy loads or you are in heavy stop and go traffic and use 4X4 low a lot , consider purchasing a cooler . The cooler thats built into your rad is designed to cool the transmission with the weight of just the truck by itself .When you are in 4x4 low , your torque converter is usually in the stall stage and creates a tonne of additional heat .You dont have much air flow going through your rad when you are in low range 4x4 .
    160 - 200 are considered normal temps providing your engine radiator is functioning properly . If your engine overheats , your transmission will also overheat
    Normal fluid temperature in transmission to be 175 deg. F.

    Rate of oxidation to double for each temperature increase of 20 deg F above normal (175 deg F). As oxidation rate doubles, useful life of fluid is cut in half.

    At 175 deg F life is 100,000 miles
    At 195 deg F (20 deg above 175) life is 50k miles
    At 215 life is 25k miles
    At 235 life is 12k
    At 255 life is 6,250
    At 275 life is 3,000
    At 295 life is 1500
    At 315 life is 750

    At temperatures much above 300 deg F the metals in the transmission will tend to warp, twist etc. high temperatures causes the formation of varnish deposits which impair or pre vent transmission operation.

    At a fluid temperature of 415 deg F fluid life is 30 minutes!

    Source: Empire Lubricants Inc.
    Consider a scan guage [​IMG][​IMG]http://www.amazon.com/ScanGauge-Comp.../dp/B000AAMY86
    Here is the best information for the scan guage http://www.tacomaworld.com/forum/2nd...-pressure.html

    Ultraguage is now offering transmission temps http://www.tacomaworld.com/forum/2nd-gen-tacomas/318340-ultragauge-transmission-temp.html

    You could also use the Torque app with an Android phone as a cheap alternative to watch your temps http://www.tacomaworld.com/forum/per...d2-reader.html


    A picture heavy write up showing a manual gauge install
    https://www.tacomaworld.com/threads/trans-temp-sensor.456998/#post-13594000

    https://www.amazon.ca/80212-Transmission-Temperature-Gauge-Kit/dp/B0002A596I
    [​IMG]

    This is how Low Pressure Drop technology works::
    When Automatic Transmission Fluid (ATF) is cold it is viscous. The unique Tru-Cool design allows the colder, thicker ATF to flow more efficiently through two open bypass channels positioned at the top of the cooler. As operating temperatures increase, the ATF becomes hotter and thinner, It's then directed through the core where it is cooled. Tru-Cool's highly efficient cooling technology combines improved protection against lube failure with optimal heat transfer.
    [​IMG][​IMG]http://www.amazon.com/Long-Tru-Cool-.../dp/B005XZXB1M
    Long Tru-Cool Oil Coolers offer advanced cooling protection for many towing applications. The advanced technology out performs TUBE & FIN Designs, Delivers up to 15 times less flow restrictions, 30% more cooling delivers maximum heat transfer, Self-Regulating for maximum lube flow protection through start-up, varied temperatures and driving conditions, heavy loads and towing.
    Here is Toyotas fluid flow guide ...Look at page 8 on this PDF http://www.toyotatundraforum.com/pdf/A750E.pdf

    Installing a new radiator or you need to make sure your cooler is clean ?
    Use this product [​IMG]$7 Lubegard 19001 Dr. Tranny Kooler Kleen Trasmission Line Flush, 13.25 oz.https://www.amazon.com/dp/B001DKNH8I?aaxitk=MYxoLs5I4LwRQxZC0Y9EDw

    And here is a guy who recently installed a cooler correctly http://www.tacomaworld.com/forum/1st...agram-pic.html

    cooler and fan install http://www.tacomaworld.com/forum/2nd...n-install.html

    HERE is the Tacoma World Towing Bible https://www.tacomaworld.com/threads/the-tacoma-towing-bible.4031/

    CAN YOU OVER COOL ? Yes . Transmissions are designed to operate at 170ish . There are demulsifiers in the fluid to assist with internal condensation but you still need the steady heat to bake that water off . If installing a cooler , ask yourself what plans you have for the cooler during the winter months .

    When you first start your truck in the morning , the transmission uses the heat provided by the engine to warm the transmission .
    This results in better fuel economy as well as improved transmission shifting .
    With this said , I will always recommend using the factory in line radiator and then place the cooler after the original rad .
    There are exceptions to this rule mind you . The strawberry Milkshake effect , a former transmission failure causing the internal rad cooler to plug up or you simply live in an extremely warm area

    Last edited: Sep 4, 2017
    This is what Towing in overdrive will get you
     
  12. Dec 30, 2017 at 7:10 AM
    #12
    anthony250f

    anthony250f Well-Known Member

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    It does run pretty cool. About 150 average just cruising around. We don’t have real winter around here lol.
     
  13. Jan 4, 2018 at 3:56 PM
    #13
    tow-coma

    tow-coma Well-Known Member

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    You cannot over cool the transmission as long as the thermostat is operating correctly. The thermostat opens around 195F ON A THIRD GEN
     
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  14. Jan 4, 2018 at 3:59 PM
    #14
    tow-coma

    tow-coma Well-Known Member

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    Your second gens have a lower temperature thermostat than the third gens.
     
  15. Jan 4, 2018 at 4:03 PM
    #15
    anthony250f

    anthony250f Well-Known Member

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    It’s gotten colder here and now it stays around 140 or so....a little cool but it’s ok
     
  16. Jan 4, 2018 at 4:26 PM
    #16
    StuckinOhio

    StuckinOhio Well-Known Member

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    Its been -14F here this last week
    Engine runs about 181-184
    Transmission is only heating up to 69-77

    Are you referring to the engine thermostat?
    Not aware of a trans thermostat
     
  17. Jan 4, 2018 at 4:29 PM
    #17
    anthony250f

    anthony250f Well-Known Member

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    There is no trans thermostat as far as I know
     
  18. Jan 4, 2018 at 4:29 PM
    #18
    tow-coma

    tow-coma Well-Known Member

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    There is a transmission thermostat on the rear of the third gen transmission. You can push in the plunger and it will bypass and flow fluid into the lines and coolers. This is how you fill and level the fluid
     
  19. Jan 4, 2018 at 4:30 PM
    #19
    anthony250f

    anthony250f Well-Known Member

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    Ah that’s right I have heard about that!


    So you don’t check the fluid like how you would on a 2nd gen?
     
  20. Jan 5, 2018 at 5:33 AM
    #20
    gearcruncher

    gearcruncher Well-Known Member

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    You are correct ....No thermostat on 2nd gen Tacomas .
    Third gen Tacomas have a thermostat .Making an edit to the cooler page .Thanks tow-coma:thumbsup:
    2nd gen Tundras have a thermostat .
     
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