The REAL reason your fuel economy collapses in the winter

Discussion in 'Experienced Truckers' Advice' started by uncleal13, Jan 18, 2015.

  1. fencitup

    fencitup Light Load Member

    Jan 12, 2014
    Bronx, NY
    Uuuum, you're rolling many different things into one.

    For example, high altitude aerodynamics pertaining to turbine engines and airfoils (Airfoils being the aircraft's wing).

    The stalls and crashes in summer vs if it were winter.... Remember, you can get a stall at any...never mind all the technicalities. All you need to do is exceed the critical angle of attack.

    You're kinda going down the right path, but in your attempt over simplify it/ make it fit this situation you have veered off course.
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    SHO-TYME Road Train Member

    Apr 20, 2011
    Dahlonega, GA
    I hope they didn't buzz the tower.

    Anther reason is the oil in the hubs, rearends engine and transmission is thicker and takes longer to get close to operating temps, thereby creating more drag = lose of fuel mileage. That's why you want to make sure your thermostats are operating correctly, if the engine runs too cold, 1. It doesn't combust fuel as efficiently. 2. The engine oil stays cooler, thicker and causes more drag in the engine.
    magoo68 Thanks this.
  4. snowwy

    snowwy Road Train Member

    Jul 6, 2009
    and you don't know mine.

    i don't knock yours down, stop knocking mine down.
    Last edited: Jan 19, 2015
  5. snowwy

    snowwy Road Train Member

    Jul 6, 2009
    i was talking more in line with the propellor planes. the dual engines can fly higher and faster then the single. but neither can fly as high as the turbines. or as fast.

    pretty much about every crash we hear about around these parts. are single engines. with about half being breakdowns and half being stalls. with an occasional night flying crash.
  6. STexan

    STexan Road Train Member

    Oct 3, 2011
    Longview, TX
    I hear you. Starting out cold at 0F and below, it feels like your dragging an anchor the first 50 miles or so while the lubricants are practically like creamy peanut butter.
  7. PackRatTDI

    PackRatTDI Licensed to Ill

    Jul 15, 2006
    El Chuco, Tejas
    I'm smarter than both of you so stop the bickering.
    Vilhiem Thanks this.
  8. DenaliDad

    DenaliDad Retired Wheel Dog

    Besides, he has all that red lettering up there...
    rank Thanks this.
  9. TripleSix

    TripleSix God of Roads

    Apr 10, 2009
    Copied in Hell
    ...and a receipt from the Holiday Inn
  10. Vilhiem

    Vilhiem Road Train Member

    Oct 6, 2014
    Good old fashioned pissing contest... "I can pee further than you can!"

    Something else to consider when it comes to your mileage is your tires and their temperature. The hotter the tire, the hotter the air. That means the air starts to "take up more space" as the molecules move faster due to heat. That alone can decrease your fuel mileage, but it isn't by a substantial amount. In addition, that also means that the colder winter air helps the tires and the air inside stay cooler. So the tire ends up being more efficient.

    There is no one good way to nail down the cause. Even the naturally occurring and unpreventable exchange and loss of energy in the combustion reaction inside the engine is at fault.

    If you're really hard up about it, then consider using new tires in the summer and older tires in the winter. Tires that have wear weigh less, and the grooves in the tire put up less resistance to the wind. Again, doing this won't increase your mileage substantially, but since engines and design has improved so much in the past decade, tires have become a much larger part of the equation!
  11. rank

    rank Road Train Member

    Feb 11, 2010
    50 miles north of Rochester, NY
    When he said "you don't have a clue", he didn't mean this topic. He meant.....oh never mind. :)
    MJ1657 Thanks this.
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