1. Welcome to Tundras.com!

    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 Tundra discussion topics
    • Transfer over your build thread from a different forum to this one
    • Communicate privately with other Tundra owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Improving fuel economy?? Any hints?

Discussion in '1st Gen Tundras (2000-2006)' started by 03TundraWA, Feb 12, 2020.

  1. Feb 23, 2020 at 1:46 PM
    #121
    Professional Hand Model

    Professional Hand Model A.K.A ‘Golden Hands’

    Joined:
    Apr 29, 2018
    Member:
    #14878
    Messages:
    12,230
    Gender:
    Male
    First Name:
    Fred
    ‘Somewhere’... a State of Mind
    Vehicle:
    2002 Tundra SR5 4WD 4.7L AC Silver Metallica
    Hand Protectors
    @bmf4069 you have lots of work to do when you leave your Corner of Shame.
     
  2. Feb 23, 2020 at 6:17 PM
    #122
    Stumpjumper

    Stumpjumper New Member

    Joined:
    Sep 15, 2016
    Member:
    #4546
    Messages:
    2,471
    Gender:
    Male
    Fate, Tx
    Vehicle:
    2017 Tundra TSS 4x4
    Carbon build up in outboards was around long before ethanol in fuels. Carbon comes with mixing gas and oils. This is why they make carbon removers specifically for outboards. The biggest problem in outboards was fuel lines not designed to handle ethanol and fuel sitting for long periods of time. Outboards have rubber fuel lines whereas fuels have mostly metal.
     
  3. Feb 23, 2020 at 6:34 PM
    #123
    02goes

    02goes New Member

    Joined:
    Jan 15, 2019
    Member:
    #24561
    Messages:
    336
    Vehicle:
    2002 Tundra Limited 4X4
    Wrong, and flat out wrong at that. They have always used carbon removers for outboards and any combustion engine, especially for vehicles that we drive. And that was way before the outboards. For vehicles, one of the first and simplest concoction for removing carbon build up was plain ole tap water. With the engine being kept running, water was slowly poured into the carbs to remove carbon build up back in the day before you were a thought in Gods mind. Marvel Mystery oil and Risoline was one of the first popular product to prevent carbon build up. Lucas is also still used today.

    Also, your obviously not aware of the rubber tubing being upgraded for ethanol fuels. And this upgrade continues as the ethanol content increases. Thus, your statement

    "outboards was fuel lines not designed to handle ethanol and fuel sitting for long periods of time. Outboards have rubber fuel lines whereas fuels have mostly metal."

    is false with exception to "Outboards have rubber fuel lines.", and they do for good reason.

    Metal lines running underneath a vehicle is less prone to puncture and deteriorate as rubber has a tendency to do. Can run ethanol rubber lines w/o that worry from tank to motor, and they are easy to install in any boat using outboards.

    Metal rail lines exist for high pressurized fuel to accommodate the injectors requirement to operate/function to designed optimal level. And running aluminum lines are cheaper than running braided rubber lines that can accommodate the higher pressure. Outboard fuel rails are metal for same reason.

    Non ethanol gas also absorbs water, but not at the rate ethanol gas does. That's why Sta-bil has been around way before the ethanol additive was discovered.

    Run your ethanol fuel, I don't care. And I'll stick with what I know is best for my gas powered engines.
     
    Last edited: Feb 23, 2020
  4. Feb 23, 2020 at 6:44 PM
    #124
    Hooptytrix

    Hooptytrix Squeaky Chicken

    Joined:
    Nov 12, 2016
    Member:
    #5179
    Messages:
    1,275
    Gender:
    Male
    Dirty South
    Vehicle:
    2000 AC 4x4, 2001 AC 4x4 Sold. 2005 DC SR5 2WD


    Ok what I miss, feels a little hot in here
     
  5. Feb 23, 2020 at 8:20 PM
    #125
    Stumpjumper

    Stumpjumper New Member

    Joined:
    Sep 15, 2016
    Member:
    #4546
    Messages:
    2,471
    Gender:
    Male
    Fate, Tx
    Vehicle:
    2017 Tundra TSS 4x4
    Notice I did not mention what years. Yes newer fuel lines are designed to handle ethanol. There are still a lot of older outboards out there. I would hope by now that most have updated the fuel lines.
     
  6. Feb 24, 2020 at 7:33 AM
    #126
    bleach

    bleach Resident WISEGUY

    Joined:
    Jan 19, 2020
    Member:
    #41465
    Messages:
    830
    Gender:
    Male
    First Name:
    DJ
    Battle Ground, WA
    Vehicle:
    2007 Silver Sky Metallic DC 4.7L SR5 4X4

    [​IMG]
     
    Darkness, Hooptytrix and FrenchToasty like this.
  7. Feb 24, 2020 at 8:11 PM
    #127
    02goes

    02goes New Member

    Joined:
    Jan 15, 2019
    Member:
    #24561
    Messages:
    336
    Vehicle:
    2002 Tundra Limited 4X4
    Glad you know about rubber fuel lines from tank to outboard motors being up dated. Sounded like you were ignorant to that earlier, or just wanted to come on to 1st gen trks to blindly argue with people that you think don't know sht. People like that make others to not participate. That's no good here.

    The real reason for ethanol compatible motors vs upcoming none hasn't been discussed.
    It has something to do with internal parts that your not aware of. You said nothing about it yet, but will say you knew about it and will say so shortly is predictable. Internal fuel rubber components not being compatible to strength of ethanol additive is when that gas motor is done. Unless it's torn apart and upgraded to ethanol compliant part replacement.

    Flex Fuel equipped motors/components are compliant to current ethanol to fuel ratio and up to 85 percent ethanol content and 15 % fuel mixture.

    You are in a 1st gen conversation, and w/o significant knowledgeable input...Bye.
    Look it up and all will become clear, I will help you understand if you need help.
     
    Last edited: Feb 24, 2020
  8. Feb 25, 2020 at 4:44 AM
    #128
    mobicola

    mobicola New Member

    Joined:
    Jan 5, 2020
    Member:
    #40792
    Messages:
    10
    Gender:
    Male
    Vehicle:
    2006 Tundra Double Cab XSP
    I dont know if anything would help the V8 Tundra much on fuel mileage. I have a 17 year old Camry four cylinder that is as reliable as a claw hammer. Nothing fancy just works each and every time I need it. Piling the miles on the Camry for a daily driver and use the Tundra maybe one day a week or for a toy hauler etc.
     
  9. Feb 25, 2020 at 5:00 AM
    #129
    9am53

    9am53 New Member

    Joined:
    Dec 12, 2019
    Member:
    #39811
    Messages:
    411
    Gender:
    Male
    First Name:
    adam
    Vehicle:
    2015 Black RCLB 4x4
    2020 PRO headlights and grill
    I think after all is said and done thats the best thing we can do to save some gas money. I only need my truck to do truck stuff maybe 5-10% of the time at most
     
    bleach likes this.
  10. Feb 26, 2020 at 6:05 PM
    #130
    zombie

    zombie Master at Something

    Joined:
    Feb 10, 2018
    Member:
    #12803
    Messages:
    571
    Gender:
    Male
    First Name:
    paul
    Rhode Island
    Vehicle:
    2007 Black DC 4x4
    Exactly :thumbsup:
     
    KarmaKannon and Rex Kramer like this.
  11. Feb 26, 2020 at 6:53 PM
    #131
    Sas

    Sas Humor is everywhere

    Joined:
    Jul 16, 2018
    Member:
    #17087
    Messages:
    4,418
    Gender:
    Male
    First Name:
    Jason
    OKC, OK
    Vehicle:
    '17 SR5 CM TSS 4WD MGM 5.7 FF
    Lost track after #1.
    Thin out the gas with some water.
     
    Filthyphil and FrenchToasty like this.
  12. Feb 26, 2020 at 7:00 PM
    #132
    bleach

    bleach Resident WISEGUY

    Joined:
    Jan 19, 2020
    Member:
    #41465
    Messages:
    830
    Gender:
    Male
    First Name:
    DJ
    Battle Ground, WA
    Vehicle:
    2007 Silver Sky Metallic DC 4.7L SR5 4X4
    Screen Shot 2020-02-26 at 6.59.39 PM.jpg
     
  13. Feb 27, 2020 at 6:53 PM
    #133
    tmac58star

    tmac58star New Member

    Joined:
    May 28, 2019
    Member:
    #31106
    Messages:
    72
    Gender:
    Male
    Vehicle:
    Black 1st generation Tundra SR5 Access Cab
    Run on aviator fuel if you can get it...avgas they call it.
     
    FrenchToasty likes this.
  14. Feb 27, 2020 at 10:20 PM
    #134
    artsr2002

    artsr2002 2005 Tundra DC SR5

    Joined:
    Sep 2, 2019
    Member:
    #35520
    Messages:
    519
    Put 15 inch wheels and tires on the front and 35 inch wheels and tires in the back for that always going downhill stance. Trucks going downhill always use less gas. Scientific internet fact. LOL
     
  15. Jan 14, 2021 at 12:39 AM
    #135
    assassin10000

    assassin10000 New Member

    Joined:
    Oct 27, 2020
    Member:
    #54157
    Messages:
    193
    First Name:
    Andrew
    Northern CA
    Vehicle:
    '05 SR5 AC 2wd
    Remote start alarm Removed keyless entry piezo Qi phone charger & dash mount Subaru underseat subwoofer Hopkins Easylift Steering wheel audio controls No-tenna mod 3/4 adhesive anti-rattle shim D/S door
    So, got a tonneau cover the other day and in the interest of 'Science!' went and did a few checks with my torque pro & a bt dongle.

    Same freeway sections in both directions and averaged results. Started with a full tank both times and from the same station. Same cool night temps and same tires/pressure.


    MAF G/s / Engine Load % and Est. MPG

    Without cover:
    64mph
    34.9/36.4 18.6

    70mph
    42.1/40.4 16.8

    75mph
    52.2/46.8 14.6


    With cover:
    64mph
    33.5/35.0 19.3

    70mph
    39.9/38.3 17.6

    75mph
    48.2/43.0 15.7


    The est. MPG may be off a bit but real world calculation at the pump was fairly close to what I actually get (67mph est mpg was 18.3 but I actually got 18.4 mpg).

    Food for thought.
     
  16. Jan 16, 2021 at 9:18 PM
    #136
    HBTundra

    HBTundra New Member

    Joined:
    Nov 20, 2019
    Member:
    #38908
    Messages:
    129
    Gender:
    Male
    Sorry to keep beating a dead horse on this topic. I just got a 06 DC 2wd w/ really low mileage of 58K . . . it was my neighbors garage queen. It sat quite a bit as he has a company car. When I 1st got it a couple months ago I did all the basic maint. stuff I could do. The 1st 2 tanks of gas I ran 91octane w/Lucas Oil upper cylinder lubricant per their ratio. Truck bogged, felt like the E-brake was on, ran like a top, but just gutless. Then next couple tanks of gas I went with 89 and the Lucas and it seemed to wake it up a little. Last 2 tanks I've ran 87 w/ Lucas and it 'SEEMS' to like that much better. Now, this could all just be in my head as I feel like I'm still learning the 'power curve' of the truck. Coming off the 03 V6 AC I had, it's a totally different animal. My mileage seems to have improved this tank, and maybe the octane thing had nothing to do with it at all, and it was just me driving the truck wrong. Might try a tank w/o the Lucas next, but that stuff has always helped every vehicle / boat I have ever had . . . even 2-stroke outboards.
     

Products Discussed in

To Top