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4.0 Gas Mileage

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Old 05-27-2012, 09:30 AM   #81
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Originally Posted by Jay238 View Post
Yesterday, I drove 260 miles one way to swap hoods with a guy. Filled up right before I left, got on the freeway, met the guy/swapped hoods, drove back. Light came on about 1/4 home. After my tire size calculation I drove 331 miles on a tank when the light came on! The odometer showed exactly 301 miles. Filled up with 17.8 miles which means 18.5 miles to the gallon. That is with: 6-speed, 35" mud terrains, and a six inch lift. This was 100% highway with cruise set at 64mph...I'm stoked

Actually, may be more. My difference is 13% correct?

from the online tire size calculator
Question for you all that's kind of like Jay238's: As of last week I'm driving a 2005 DC Off Road 6-speed with Nitto Terra Grappler 285/70/17's and about a three inch lift. (May have to start another thread to see what you all can tell me about the lift.)

When I used the tire size calculator I think I'm supposed to input 265/70/16's as the stock tire the odometer would have been calibrated to - at least in theory?

When I use the 265's as my base assumption, and the current 285/70/17's the tire size calculator tells me that I'm actually going 6.4% farther than my odometer reads.

If that is all correct, is this the math? (Odometer distance) x (106.4%) = (actual miles). Then (actual miles)/(gallons at fill-up) = (Actual MPG's)?

Is that correct?

My first tank with no correction was 17.2 mpg's on 87 octane.
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Old 12-13-2012, 08:35 PM   #82
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I just purchased a 2013 am i able to use ethonal
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