1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site
    Quick Links: M1101 Trailers from Expedition Supply The Tacoma Towing Bible Installing trailer brakes on my 09 5 lug 2” to 1.25” receiver adapter Want to buy a hitch...SO, which one? Overcooling a Auto Transmission?

Which supplemental AT oil cooler? Install in series to existing cooler or not?

Discussion in 'Towing' started by Giovanni, Mar 30, 2025.

  1. Mar 30, 2025 at 11:28 AM
    #1
    Giovanni

    #1
    Giovanni [OP] Member

    Joined:
    May 23, 2023
    Member:
    #425253
    Messages:
    10
    Gender:
    Male
    First Name:
    Hans
    Colorado
    Vehicle:
    2018 Red Tacoma V6
    Good day Tacoma friends
    We just returned from a 3'200 miles trip with our 2018 gen-3 Tacoma towing a 3,500lbs camper trailer. The truck is outfitted with the factory "towing package". All went well however, the Automatic Transmission Fluid (ATF) Post-Converter oil temperature frequently ran above 200°F especially when climbing mountain passes. I am now planning on getting the transmission oil changed (Odometer reading: 62,500miles) and to install a supplemental transmission oil cooler.
    My questions:
    - Do you have any recommendations of what cooler (brand and model) to install?
    - Should this supplemental cooler be installed in series to the existing cooler or in lieu of?
    - Do you have a picture of your supplemental cooler installation?

    Thank you in advance for sharing your thoughts!
     
    Giovanni, Mar 30, 2025
    #1
  2. Apr 8, 2025 at 7:53 PM
    #2
    paranoid56

    #2
    paranoid56 Well-Known Member

    Joined:
    Jul 25, 2012
    Member:
    #83443
    Messages:
    3,438
    Gender:
    Male
    San Diego
    Vehicle:
    14 double cab taco
    paranoid56, Apr 8, 2025
    #2
    soggyBottom likes this.
  3. Apr 8, 2025 at 7:58 PM
    #3
    soggyBottom

    #3
    soggyBottom Well-Known Member

    Joined:
    Sep 19, 2018
    Member:
    #266818
    Messages:
    1,937
    soggyBottom, Apr 8, 2025
    #3
  4. Apr 8, 2025 at 9:34 PM
    #4
    paranoid56

    #4
    paranoid56 Well-Known Member

    Joined:
    Jul 25, 2012
    Member:
    #83443
    Messages:
    3,438
    Gender:
    Male
    San Diego
    Vehicle:
    14 double cab taco
    its just the cooler, so you will need to make brackets.
    IMG_5464.jpg
    IMG_5463.jpg

    IMG_5763.jpg
     
    paranoid56, Apr 8, 2025
    #4
    soggyBottom likes this.
  5. Apr 8, 2025 at 9:57 PM
    #5
    MGMDesertTaco

    #5
    MGMDesertTaco Come on, live a little...

    Joined:
    Jan 30, 2021
    Member:
    #354573
    Messages:
    9,728
    Gender:
    Male
    MGMDesertTaco, Apr 8, 2025
    #5
  6. Apr 23, 2025 at 5:45 PM
    #6
    Tacotime3

    #6
    Tacotime3 New Member

    Joined:
    Apr 23, 2025
    Member:
    #469981
    Messages:
    1
    Isn’t normal between175 and 225 when towing?
     
    Tacotime3, Apr 23, 2025
    #6
  7. Apr 23, 2025 at 5:58 PM
    #7
    MGMDesertTaco

    #7
    MGMDesertTaco Come on, live a little...

    Joined:
    Jan 30, 2021
    Member:
    #354573
    Messages:
    9,728
    Gender:
    Male
    Yeah, but any prolonged towing temps at 220 or higher I would be changing the fluid a lot more frequently.
     
    MGMDesertTaco, Apr 23, 2025
    #7

Products Discussed in

Derale 13960 Hyper-Cool Remote Transmission Cooler
$283.49
To Top