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How can I get my tundra to hold 80 Gallons of Fuel?

Discussion in '2.5 Gen TRD Pro (2014-2021)' started by 21TrdProWhite, Jul 29, 2025 at 4:21 AM.

  1. Jul 29, 2025 at 4:21 AM
    #1
    21TrdProWhite

    21TrdProWhite [OP] New Member

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    Dear Tundra Fam,


    has anyone tried to add one of those aux fuel tanks, with the switch to get 80+ gallons of fuel instead of the standard 38 gallon tank?
     
  2. Jul 29, 2025 at 5:41 AM
    #2
    KNABORES

    KNABORES Sarcasm incoming

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    That wouldn’t be instead of. You keep the 38 gallon tank, add the aux tank in the bed, then have a transfer pump that you can switch on and off to pump from the aux tank to the OE tank. Diesel guys do it when they hotshot. Just have to remember to switch the transfer pump off when your tank is full.
     
    bulldog93 and ColoradoTJ like this.
  3. Jul 29, 2025 at 5:54 AM
    #3
    ColoradoTJ

    ColoradoTJ Certified tow LEO Staff Member

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    bulldog93 and KNABORES like this.
  4. Jul 29, 2025 at 6:01 AM
    #4
    KNABORES

    KNABORES Sarcasm incoming

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    There are no 80 gallon tanks for the Tundra. To get 80 gallons of fuel, you’ll have to have your original tank, or the 46 gallon one ($$$, gas gauge is wrong, discontinued) and an additional aux tank. Since you would need the aux tank anyway, keep your original tank and transfer. Or, if you don’t mind stopping to put the gas in (kind of defeats the purpose for some) you can get an aux tank that’s not the big installed one, more like a portable with a transfer hose and nozzle on it and keep it in the bed. I don’t recommend driving around with all that extra fuel in portable container all the time though. The Aux tank will be safer.
     
  5. Jul 29, 2025 at 6:13 AM
    #5
    MadMaxCanon

    MadMaxCanon New Member

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    Too many, but not enough....
    Can you hold your pee for 80 gallons? Impressive lol
     
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  6. Jul 29, 2025 at 6:24 AM
    #6
    Tunrod

    Tunrod New Member

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  7. Jul 29, 2025 at 6:40 AM
    #7
    KNABORES

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    In a Tundra? 80 gallons while towing will get you about 5 hours of driving.....:D
     
    MadMaxCanon[QUOTED] likes this.
  8. Jul 29, 2025 at 6:50 AM
    #8
    Soflo

    Soflo New Member

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    What’s wrong with stock?
  9. Jul 29, 2025 at 10:10 AM
    #9
    Shanealan

    Shanealan New Member

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    stock
    What a nut job.
     

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