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Thread: How to get the highest mpg possible out of a vehicle

  1. #61
    Join Date
    Oct 2016
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    4

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    Quote Originally Posted by jdh View Post
    I can easily get 700+ from the 12.6 gallon tank in my Cruze CTD without much effort. Some drivers can push it over 900 miles to a tank.


    Just turning off the AC does NOT keep the compressor from running. Putting the system to defrost will run the AC compressor to help dehumidify the air.


    Open windows can reduce economy by around 20% by increasing drag.
    LOL nice to know 30years later chevy can get same gas milage as my 79 rabbit diesel

  2. #62
    Join Date
    Sep 2007
    Location
    Central Texas
    Posts
    618

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    Quote Originally Posted by bacpacker1513 View Post
    JDH, you may have already posted, but what vehicle are you driving? 58.5 is pretty sweet.
    This was my first long road trip. City is about 33, mixed city Highway 41ish.

    Quote Originally Posted by 91CavGT View Post
    Nice! Let me guess. VW TDI?
    Dear Lord no! 2014 Cruze 2.0 L Clean Turbo Diesel.
    Yea, though I walk through the valley of the shadow of death, I will fear no evil:

  3. #63
    Join Date
    Jul 2016
    Location
    NW Ohio
    Posts
    315

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    I think in a SHTF type of scenario, attempting to get the most miles of of the gas you have, I wouldn't be going 50 mph. I think 35 mph is much more efficient. Slowing down/stopping is the enemy of good gas mileage, and using the brakes normally would be a no no. Look ahead, and coast to stops, stay on the freeway where there are no stop signs.

  4. #64
    Join Date
    May 2011
    Location
    Central Texas
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    2,415

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    Quote Originally Posted by ckelly78z View Post
    I think in a SHTF type of scenario, attempting to get the most miles of of the gas you have, I wouldn't be going 50 mph. I think 35 mph is much more efficient. Slowing down/stopping is the enemy of good gas mileage, and using the brakes normally would be a no no. Look ahead, and coast to stops, stay on the freeway where there are no stop signs.
    It all depends on gearing and aerodynamics as to what speed is best. Sometimes by going really slow it will decrease fuel economy due to being in too low of a gear, too high of an rpm for the speed, and not having enough momentum when you come to a hill.

    I had a '91Chevy Cavalier that got better mpg at 80 mph (42 mpg) than it did at 60 mph (35 mpg) due to aerodynamics and gearing. At 60 mph the engine was cruising below its peak torque and you had to get on the throttle a lot for any small hill. At 80 mph, the engine was right at its peak torque. Combine that with the momentum, aerodynamics, and fuel economy was really good.

    Recently there was an article of a guy that took a Dodge 1/2 ton truck with the 3.0L diesel and tried to go 1,000 miles on one tank of fuel. Well, he did it with averaging 37 mpg if I remember right. He did this by cruising at 52 mph because this was the slowest he could go in top gear.
    Prepare for the worst, hope for the best

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