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38 Gal tank experiences....

Discussion in '3rd Gen Tundras (2014+)' started by KeithM, Mar 19, 2018.

  1. May 7, 2020 at 2:11 PM
    #211
    Cpl_Punishment

    Cpl_Punishment I am a man of constant sorrow

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    If you could get your hands on a 38 gallon tank, I wonder how hard it would be to swap it in.
     
    pnw.tundra likes this.
  2. May 12, 2020 at 3:53 AM
    #212
    ClaytonW

    ClaytonW New Member

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    O.K., it looks pretty normal. I had about 10 Toyota/Lexus cars and SUVs and each of them had about 5 gallons left when the computer displayed 0 remaining miles. This is not a bug, it's a feature :) It was the same for my 2008 Sequoia and it's the same for my 2016 LX 570. I did not test it on my Tundra yet but I believe that there will be no difference.
     
  3. Jun 25, 2020 at 10:37 PM
    #213
    Sciosh98

    Sciosh98 New Member

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    So this probably isn’t the right place for this, but close kinda? :notsure:

    I’m still in my first gas tank, but every time I shut my truck off it gives me a little ride summary...and so far (and I am babying it since it’s still under 500 miles) I’ve been at 16-18 mpg every trip driving around town. Could that be right? Or is the computer doing a shitty calculation because it still hasn’t gotten reality under its belt? Zero interstate driving and I’m averaging on the top end of the highway mpg rating?
     
  4. Jun 26, 2020 at 12:00 AM
    #214
    Jpneely

    Jpneely New Member

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    mine is always an MPG or so on the optimistic side. that said, 16 is about what i see depending on how much stop and go i get into in the city. most of my miles have been highway, and according to fuelly im getting 17ish MPG when my computer tells me 18-18.5. take the numbers with a grain of salt. i mainly just use it see where i can improve if MPG's is what im going for.
     
  5. Jun 26, 2020 at 4:54 AM
    #215
    Jaypown

    Jaypown New Member

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    Your truck has yet to even learn your driving habits. My first couple tanks showed over 600 miles on DTE before it adjusted to down in the 400's. I wouldn't personally trust the MPG rating. just wait until you fill up and calculate it by hand.

    Also, depending on your terrain and driving style, 16-18 doesn't seem too far off.
     
  6. Jun 26, 2020 at 6:06 AM
    #216
    CaptainGrumpus

    CaptainGrumpus The Mailman

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    Maine
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    After fill up, I’m at 516 miles to empty with an average of 15.6 miles per gallon. I am using a signal booster which has helped my gain 1 mpg.
     
  7. Jun 29, 2020 at 2:49 PM
    #217
    Sciosh98

    Sciosh98 New Member

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    Okay, first fill up: 502 miles, got 31 gallons, and averaged right around 16mpg. The computer said I still had about 25 miles to empty. All seems right with the world.

    With my natural lead foot, I should be averaging 13mpg in no time.
     
    Fearthisbeard and Jaypown like this.
  8. Jul 5, 2020 at 8:17 AM
    #218
    LJOHNS

    LJOHNS New Member

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    I love the large tank on my new to me 2018 CM. One of my favorite features!
     
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  9. Jul 11, 2020 at 7:26 AM
    #219
    LGTruckWesternSlope

    LGTruckWesternSlope New Member

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    I like a little left in the tank. My history tracks at about 30 gal. per fill-up with a 520 mile range. Happy with that and the mpg so far. Based on my history and estimating at least 6 gallons left to be safe at 15mpg allows for an additional 90 miles of travel just in case you get distracted with the joy of driving this amazing truck. Note stats attached.
     

    Attached Files:

  10. Jul 12, 2020 at 6:59 PM
    #220
    pnw.tundra

    pnw.tundra PNW Tundra

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    Nice data logging. It's interesting to see your MPGs trending progressively downward. What do you think's attributing to that? Heavy foot or enjoying the V8 more?
     
  11. Jul 14, 2020 at 8:03 AM
    #221
    LGTruckWesternSlope

    LGTruckWesternSlope New Member

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    I don't believe it's heavy foot or enjoyment. It's more around town shorter trips since the pandemic. Previously we drove to grandson's house each week (90miles each way) helping the avg. miles per trip value. Beyond that some of the higher mpg tanks I believe are associated with the opening of ATV season and trails a little further away in the mountains. Even in-town driving on the Western Slope of Colorado is pretty tame traffic wise and things are pretty close in the smaller towns.
     
    pnw.tundra likes this.
  12. Jul 16, 2020 at 6:31 PM
    #222
    mcm0455

    mcm0455 New Member

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    I love the 38 gallon tank! It's really nice being to drive all day and not worry about running out of gas. My trips from western Colorado to western Wyoming have very few gas stations on the way, and sometimes I don't want to wait 20 minutes to fill up. I could make it from my home to our second house on one tank, but I tend to drive with the tank more than 1/2 full.
     
    AircareTundra likes this.
  13. Jul 18, 2020 at 5:33 AM
    #223
    iceburg

    iceburg New Member

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  14. Jul 18, 2020 at 5:35 AM
    #224
    iceburg

    iceburg New Member

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    last fill up. Average gas miles between 16mpg to mid 17mpg. A lot of highway driving, no lifts or mods..
     
  15. Jul 21, 2020 at 8:17 AM
    #225
    Dragracer_Art

    Dragracer_Art Well armed member

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  16. Jul 21, 2020 at 8:23 AM
    #226
    Skey44

    Skey44 GreenvilleOverland

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    Lift, tires, skids, sliders, fridge, camper
    It’s a must have on these thirsty beasts, despite some folks grievances.
     
  17. Jul 24, 2020 at 4:26 PM
    #227
    Tundra234

    Tundra234 New Member

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    George
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    Hey you have the exact same lift and wheel tire setup that I do on my 2013 4.6. I am looking at getting a 2020 and swapping everything over. What would the average mpg be with that setup? Thanks
     
  18. Jul 24, 2020 at 4:42 PM
    #228
    ninjajay

    ninjajay Posting from the toilet

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    I get like 14 mostly city or 16-17 mostly highway
     
  19. Jul 24, 2020 at 4:45 PM
    #229
    Tundra234

    Tundra234 New Member

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    Thanks. So probably not much different than my 4.6? I'm not sure what I'm getting in it.
     
  20. Jul 24, 2020 at 5:01 PM
    #230
    Dragracer_Art

    Dragracer_Art Well armed member

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    Averaging 18.1 on highway right now and running 75-85mph.20200723_154309.jpg
     
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  21. Jul 24, 2020 at 5:10 PM
    #231
    Tundra234

    Tundra234 New Member

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    What is your city mpg? Stock setup?
     
  22. Jul 24, 2020 at 5:13 PM
    #232
    Dragracer_Art

    Dragracer_Art Well armed member

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    Yep, stock setup. Just bought the truck on Sunday.
    City mpg is in a previous post and shows 16.1
     
  23. Jul 24, 2020 at 5:21 PM
    #233
    FlyingWolfe

    FlyingWolfe Wolfie

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    544FBB92-E96B-4253-93D6-98A793B62C03.jpg
    This was my drive into the city last week. My current tank average 200 miles in since last fill up is 17.3mpg with tracracs, its been around that the last couple of tanks.. Bunch damned lead-foots in here or what?:rofl:

    i filled up with 50mi remaining on the dash but couldnt tell you what it took, wasnt paying attention.. o_O
     
    Last edited: Jul 24, 2020
  24. Jul 24, 2020 at 5:33 PM
    #234
    Tundra234

    Tundra234 New Member

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    Nice. Yeah if I decide to buy the one I'm looking at my lift and 34's will move over to it.
     
  25. Jul 24, 2020 at 6:59 PM
    #235
    GravityGear

    GravityGear Parking Lot Prerunner

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    Transfer Flow tank
    Just get this.
     
  26. Jul 24, 2020 at 7:05 PM
    #236
    Tundra234

    Tundra234 New Member

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    ?
     
  27. Jul 24, 2020 at 7:30 PM
    #237
    GravityGear

    GravityGear Parking Lot Prerunner

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    Phone sucks...
    upload_2020-7-24_20-29-53.png
     

    Attached Files:

  28. Jul 26, 2020 at 9:29 AM
    #238
    purplenova

    purplenova Not a new member

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    When my empty light comes on, the most I've ever put in it was 29 and that was forcing it in. I've never pit more in it. Could sometjing be wrong or is there a techstream setting that could be changed.

    My mileage is constant at 14mpg
     
  29. Jul 26, 2020 at 10:09 AM
    #239
    jc153

    jc153 Speed-ish Glamper

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    Nothing’s wrong it’s the built in reserve with these Tundras.
    The light came on with my 26 gal tank and I had at least 6 gallons still in there and now with my 38 gal tank I have 10 gallons still in the tank.
     
  30. Jul 26, 2020 at 7:42 PM
    #240
    Camprunner

    Camprunner New Member

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    New Orleans to Chicago.
    38 gallon is an absolute necessity. 80-85 on hwy 55
    13-14 mpg hand calc on all gas on the way up. Display was pretty accurate too. On the way up it was all foot controlled. The way back was a combo of cruise and foot. I found the cruise was the same as long as there was no traffic. Traffic and this cruise would cut throttle and apply throttle very heavily. Those mpg’s were in the 12’s
    Not that I really care, but I get better around town with a bit of under 70 mph interstate.
    Long live the 38!
     
    AircareTundra and TILLY like this.

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