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38 Gal tank experiences....

Discussion in '2.5 Gen Tundras (2014-2021)' started by KeithM, Mar 19, 2018.

  1. Oct 7, 2021 at 10:45 PM
    #511
    mgnchakar

    mgnchakar New Member

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    I wish they made it even larger. Why not?!
     
  2. Oct 8, 2021 at 6:34 AM
    #512
    sportbikenut

    sportbikenut New Member

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    Traded in 2016 Tundra Limited DC Silver 4x4
    Because the weight of a full tank of fuel is used in the payload capacity calculation of the vehicle. This is one trick they used to increase payload.
     
    IsaiahCanada and Cpl_Punishment like this.
  3. Oct 8, 2021 at 11:48 AM
    #513
    tdm850

    tdm850 New Member

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    Here one for the tanks from what I can tell they are only 34 gal at the most not 38. No reserve just 34 gal reasoning is I only run my tank down to half and every time it only takes 17 gals every time I'm not a mathematician but 17 and 17 does not come to 38 my truck is new with less than 2000 miles and unless my gauge is way off I paid for 38 and got 34 this would a good one for a Toyota Tec to explain.
     
  4. Oct 8, 2021 at 12:22 PM
    #514
    sportbikenut

    sportbikenut New Member

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    Pittsburgh Region, PA
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    Traded in 2016 Tundra Limited DC Silver 4x4
    It's a theoretical 38 gal tank. The most that is usable is around 30. The empty tank warning light comes on around 26. I had originally thought that they installed the 28 gallon sensor in my 38 gallon tank. All due to the in-tank fuel pump that needs fuel for cooling. I recall it's a minimum of 6 gals. So, you're correct in that we do not have a usable 38 gal tank. Dumb design.
     
  5. Oct 8, 2021 at 12:27 PM
    #515
    Cpl_Punishment

    Cpl_Punishment Mother-Loving Member

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    Rosy
    Alberta, Canada
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    And yet there's a member here who put nearly 38 gallons in his.

    To reiterate what we've already established:
    The computer in the DIC that calculates your distance to empty is very conservative. If you want to put more fuel in your fuel tank, drive father before you fill up.
     
  6. Oct 8, 2021 at 12:32 PM
    #516
    LuvTundras

    LuvTundras New Member

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    I don't get it either. Years ago even driving up the ALCAN highway through the rockies in northern Canada we were passing gas stations every 80-100 miles. When my fuel gage gets to about 3/8 of a tank, I start thinking about filling it up. I usually prefer to hit Costco about 8pm and usually have no problem doing that a day or two after that 3/8 reading. But if I am at Costco and by chance there is no line, I will fill up even if I have 5/8 of a tank. Like you said, no hero medal for being the all time empty tank champion.

    https://www.youtube.com/watch?v=aaPYTU1F2mE
     
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  7. Oct 8, 2021 at 1:10 PM
    #517
    sportbikenut

    sportbikenut New Member

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    Chuck
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    Traded in 2016 Tundra Limited DC Silver 4x4
    You will burn up the fuel pump doing that. Not recommended.
     
  8. Oct 8, 2021 at 1:12 PM
    #518
    Cpl_Punishment

    Cpl_Punishment Mother-Loving Member

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    Rosy
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    Fully agreed. I always fill up at a quarter tank or more. I just don't see why every single new Tundra owner needs to come on here and cry about only putting 32 gallons in their truck at a time.
     
  9. Oct 8, 2021 at 2:12 PM
    #519
    50Shades

    50Shades New Member

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    for me, as long as my computer says im about 570+ miles on my range, im good to go. That's a full 38 gals for me. I fill up when the tank is about 1/3. and gas pump usually indicates 22gals.
     
  10. Oct 8, 2021 at 2:24 PM
    #520
    Nowhereman

    Nowhereman New Member

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    Rough Country shocks, ReTrax cover, Summo springs, black out badging, bed extender, "some other things I can't mention"
    With my 2021, I never have seen 570 miles range on the system. Best being 514 and now it averages around 480.
     
  11. Oct 8, 2021 at 2:26 PM
    #521
    50Shades

    50Shades New Member

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    I read somewhere that the range is based on your previous Tank Avg MPG before fillup.
    my routes are 95% highway so my tank avg is always 15+ mpg.
    cruisin at 65-70mph is my truck's sweet spot
     
  12. Oct 8, 2021 at 2:50 PM
    #522
    GrayWolf

    GrayWolf New Member

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    Think of it as a Toyota “Safety Net”, to where when your gas gauge reads E you still have 6 gallons in the tank. 1: So, you don’t run dry. 2: So, you don’t burn up the fuel pump.

    6 Gallons in our High Fuel Economical vehicles….. should take us another 78 miles. Let hope its not another 78 miles to the next gas station.

    Even my 1991 Honda CRX Si which had a 12 gallon tank would show E at 8 gallons and I had ONLY driven 320 miles!!! Yes, those where the Exciting days, to fill up with 8 gallons and drive 320 miles. But that IS the saving grace with a 38 gallon tank and being able to drive 400+ miles before needing to even think about gas (being on the safe side).

    I am always thrilled to see 520-580 miles on my cluster after putting in 28 gallons. Price here in Texas JUMPED to $2.95 per gallon yesterday. Has been sitting around $2.62 to $2.78 the last few months. AND yes, I was shocked when I went to Cal. last year and seen the $1 to $2 more per gallon.

    That’s my 2cents.
     
    50Shades likes this.
  13. Oct 9, 2021 at 7:11 AM
    #523
    tdm850

    tdm850 New Member

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    Yes it is based on your previous Tank my ford was the same way.
     
  14. Oct 10, 2021 at 9:11 AM
    #524
    Darth_cholo

    Darth_cholo New Member

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    because it's a never ending thread and I just did my first fill up on my Tundra.

    - Range went to zero and gas light came on 1 minute after
    - Got 30.65 gallons in at top off. Gives me a 6-8 gallon buffer and a 400 mile range I estimate for freeway to be conservative
    - odo #1 is always tripped on fill-up so i know how many miles on my tank at all times.
    - Tundra keeps track of "tank mpg", so I wonder where i can see the mileage details on the tank without having to manually trip odometer
     
    Mike59 likes this.
  15. Oct 10, 2021 at 9:35 AM
    #525
    50Shades

    50Shades New Member

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    trip mpg should be in your entertainment system. Under the Eco tab if you have it.
     
    Winning8 likes this.
  16. Oct 10, 2021 at 9:50 AM
    #526
    Winning8

    Winning8 New Member

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    Setup a split screen if u don’t want to push buttons

    0198CA63-D85F-400D-AAEB-A685A359D520.jpg
     
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  17. Oct 10, 2021 at 9:55 AM
    #527
    Cpl_Punishment

    Cpl_Punishment Mother-Loving Member

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    I always find the average mpg on the Eco screen in the infotainment to be off but the trip mpg I get on the DIC when I shut my truck off has been bang on with my hand calcs so far.
     
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  18. Oct 10, 2021 at 10:21 AM
    #528
    Tundrapwr16

    Tundrapwr16 New Member

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    Icon Coil Over Shocks,Road Armor Bumpers,Bully Dog Programmer.
    Does anyone Run the Bullydog programmer in there trucks? And if so can I get help on how to program it from being so throttle sensitive ???
     
  19. Oct 10, 2021 at 10:27 AM
    #529
    AzureNightmare

    AzureNightmare ASCM#1 Douchebag formerly known as 50 Buck

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    Not sure how that relates to the experiences with a 38 gallon fuel tank, but I do know that @dirtydeeds sells the bullydog. Keith is generally really helpful and knowledgeable. You might try getting in touch with him.
     
  20. Oct 10, 2021 at 10:29 AM
    #530
    Tundrapwr16

    Tundrapwr16 New Member

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    Thanks for that. I actually just started a thread on it. I was thinking of fuel mileage and then tank size.i would like to install a big tank in my truck, suggestions
     
  21. Oct 10, 2021 at 10:31 AM
    #531
    Winning8

    Winning8 New Member

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    Oof, I thought u want the range mileage for the tank, idk about the mpg. I only do short trips, so I don’t know which one is accurate. I always do hand calc when I fill up and write it on receipt.
     
  22. Oct 10, 2021 at 10:35 AM
    #532
    AzureNightmare

    AzureNightmare ASCM#1 Douchebag formerly known as 50 Buck

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    There've been some threads on retrofitting the larger tank, and there are also some that have gone with even larger tanks in the bed. Transferflow I think?
     
  23. Oct 10, 2021 at 10:38 AM
    #533
    Tundrapwr16

    Tundrapwr16 New Member

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    Replacing the existing tank is my only option. I carry sheet rock and building materials. Long beds are great for that.. I’m thinking there might be more room because of the 8 foot bed for a large fuel tank down there idk ‍♂️
     
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  24. Oct 10, 2021 at 10:49 AM
    #534
    AzureNightmare

    AzureNightmare ASCM#1 Douchebag formerly known as 50 Buck

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    I am not certain the process would be the same on a 2016 vs the older 2nd gens, but here's a thread that might get you on the right path. https://www.tundras.com/threads/07-14-38-gallon-tank-swap-install-thread.27144/
     
  25. Oct 10, 2021 at 11:06 AM
    #535
    Tundrapwr16

    Tundrapwr16 New Member

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    Thank you guys..
     
  26. Oct 10, 2021 at 12:50 PM
    #536
    Cpl_Punishment

    Cpl_Punishment Mother-Loving Member

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    The range is on the DIC too.
     
  27. Oct 16, 2021 at 3:11 PM
    #537
    Mike59

    Mike59 New Member

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    just got my 1st fill-up. Computer says 14.9mpg, with 47 miles remaining. 20211016_170536.jpg
     
  28. Oct 16, 2021 at 5:43 PM
    #538
    sportbikenut

    sportbikenut New Member

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    Traded in 2016 Tundra Limited DC Silver 4x4
    So it appears that changes were made since my previous 2016. Appears you can go to about 33 gallons usage with 5 left. Previously it was when 10 gallons were left. I'll check my new 2021 on first fill-up coming soon.
     
  29. Oct 17, 2021 at 1:42 PM
    #539
    Darth_cholo

    Darth_cholo New Member

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    took my first highway trip. 476 miles and gas light didn't turn on. Just refilled at 29.83 gallons. This puts the tank range at somewhere around 550 miles I estimate.
    Putting me at 16.8 MPG for highway. The cars tank calculation was 17.0 exactly so it's pretty accurate. There are some stretches where i really feathered the throttle where the computer calculated 18.5 mpg for those 2 -3 hour trips.



    tmyOPLvJ2m_YiKMJdOun7gsi6XyNFf55_GicP9HQ_742f38a69568dcde103898792304a37fd568ec01.jpg
     
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  30. Oct 21, 2021 at 2:33 PM
    #540
    tdm850

    tdm850 New Member

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    I want to know where you guys are paying 3.10 for gas we pay 4.40 here in canerfornia
     

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