G37 Coupe

Anybody get terrible mpg?

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Old May 21, 2016 | 01:50 PM
  #106  
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Sending unit in the tank?
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Old May 22, 2016 | 10:14 PM
  #107  
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Strange thing. My dash cluster MPG is stuck at 17.8, but the fuel economy on the center navi says 17.1 and changes constantly depending on my "spirited" driving lol. Any reasons why it may be stuck as such? Doesn't change one bit since the day I got it.
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Old May 23, 2016 | 09:04 AM
  #108  
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From: MO
Originally Posted by Ndanny
Strange thing. My dash cluster MPG is stuck at 17.8, but the fuel economy on the center navi says 17.1 and changes constantly depending on my "spirited" driving lol. Any reasons why it may be stuck as such? Doesn't change one bit since the day I got it.
Well its either broken or it hasn't been reset for a very long time so its just averaging every couple miles with the 10's of thousands of miles its already travelled. It would take a LOT of spirited driving to drop it or super grandpa driving to raise it. Just hold the button directly below it for a few seconds and it'll reset to 0.
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Old May 23, 2016 | 04:03 PM
  #109  
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Originally Posted by Kris9884
Well its either broken or it hasn't been reset for a very long time so its just averaging every couple miles with the 10's of thousands of miles its already travelled. It would take a LOT of spirited driving to drop it or super grandpa driving to raise it. Just hold the button directly below it for a few seconds and it'll reset to 0.
Love you man! lol I didn't know the reset procedure. Thanks!
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Old May 23, 2016 | 04:18 PM
  #110  
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Originally Posted by Ndanny
Love you man! lol I didn't know the reset procedure. Thanks!
haha no problem
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Old May 26, 2016 | 02:50 AM
  #111  
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This thread should help everyone realize that our mpg sucks lol its been an issue for a while now. Idk how much mpg I average but I know I average 280 miles on a full tank of gas.

https://www.myg37.com/forums/g37-sed...s-mileage.html
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Old May 26, 2016 | 10:03 AM
  #112  
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Good to know I'm in the norm with most of you.
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Old May 26, 2016 | 12:54 PM
  #113  
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Upshift at 2500 rpm and let the computer downshift (7AT) when coming to a stop. You're gas mileage will go up. Oh, and try not to brake for turns. Momentum management.

I drive mostly suburban roads and normally get 320 miles per tank, 18-18.5 gallons, shifting manually.
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Old May 26, 2016 | 08:35 PM
  #114  
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Two or three pulls to 6k per day. Approx. 60% hwy, consistently between 24-25.5 mpg per tank.
Habits play a huge part, some lube in the gas tank("snake oil") doesn't hurt.

While riding on 235 50 18 snows. Really gotta get some time and get the summers on
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Old May 27, 2016 | 09:03 AM
  #115  
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From: MO
Originally Posted by joeltender
Two or three pulls to 6k per day. Approx. 60% hwy, consistently between 24-25.5 mpg per tank.
Habits play a huge part, some lube in the gas tank("snake oil") doesn't hurt.

While riding on 235 50 18 snows. Really gotta get some time and get the summers on
Lol what's your snake oil?
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Old May 27, 2016 | 11:16 AM
  #116  
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Lube in the gas tank?! What in the world for? Everything in the fuel system is designed to use gasoline as the lubricant. Lube in the gas lowers its octane value.
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Old May 27, 2016 | 11:18 AM
  #117  
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I can only assume he meant injector cleaner or octane booster or something?
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Old May 27, 2016 | 11:26 AM
  #118  
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Silly me taking everything literally.
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Old May 27, 2016 | 03:38 PM
  #119  
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Averaging 18-20 MPG mixed use (75% highway at 70+mph, rest city) on twin turbos and 1000cc injectors. Before I was turbo I was maybe 2-4 MPG higher. Definitely saw MPG decline when highway speeds exceed 70.
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Old May 27, 2016 | 10:09 PM
  #120  
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Originally Posted by Kris9884
Lol what's your snake oil?
Lucas upper cylinder treatment. Gas used to have enough lubrication, not anymore.
Ive used it for a few years on my 03 maxima, 11 auto g37, and my current 6mt. Never a problem
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