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ShadowsPapa

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Yeah, where you live. Mine sees 8th a whole lot on runs between here and Colorado, for example. It lives mostly in 8th, same for in much of Florida. 8th gear, mostly stays there, and mpg climbs a lot.
The issue is that everyone will have different experiences -gear for your needs and where you live. None of our driving will be a perfect match for the EPAs test sequences. And that's all that matters. That's my point. Doesn't matter what other OPINIONS are - they have to do what works to pass those specific tests and what's best for the masses.
A stock Overland can not only meet, but beat EPA estimates on mpg - and in some places I've been, stay in 8th gear quite a bit.
For me, the truck is not too much for the 3.6, and although here, I don't see 8th a lot because it's crazy hilly, I do see 8th a lot driving in other states - KS, NE, FL, for example. It stays in 8th and mpg jumps up. I went from 19 to 22 after hitting the area south of Atlanta and all around Florida, and much of the driving was in 8th gear. When my truck was stock, 23 wasn't out of the question.
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ShadowsPapa

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Taller gearing always hurts city mpg.
Totally depends on how you drive and define "city mpg". You have a torque converter. An automatic won't see a lot of difference either way.
In the 70s, cars went to 2.73 gearing for better mpg averages.
 

ShadowsPapa

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Good word for it - it's also "antiquated" and I only appreciate that in my cars and other things I collect.

Highways where you live vs. where my son lives vs. where I live, vs........... I get they need to have some standardized testing, makes total sense, compare all vehicles on the exact same testing, no matter how real or unreal it is compared to the end-owner, but..............

I used to joke with people, especially my wife and her friends when they'd drive to Florida and back when they commented on getting better mpg going TO Florida than coming back home.
I told them - it's because you are driving DOWN to Florida and UP to Iowa, literally, then take prevailing winds into account. They thought I was joking until on a trip to Colorado springs and back I left my JT's display on the off road pages and showed "altitude' and could show here a constant steady drop in elevation all the way back home.
I told her - 'it's all down hill from here' as we drove home.
 

ecidiego

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I don’t have a heavy foot and on my new mojave city I am getting 14. Now only 500 miles on it so could get better but I am getting to the point where if being lite on the pedal won't get me much better why bother?
Same. Mojave on stock tires and suspension. 14.5ish city mid 17s hwy.
 

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Totally depends on how you drive and define "city mpg". You have a torque converter. An automatic won't see a lot of difference either way.
In the 70s, cars went to 2.73 gearing for better mpg averages.
Honda motorcycles were notorious for using tall gears in the 70s and 80s to increase the mpg numbers. First thing everyone did was change the gearing so you could actually use 6th or go up a hill.
 

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Stan H

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The Rubicons and Mojaves and I think Sport Max tow come with 4.10's I have 35x12.50x17 mud comps in mine and I see 8th alot. I have always found my Jeep to be powered well. I can totally hang with a f-150 running hard on windy hilly backroads. And I sure as Heck can out climb one any day of the week. I don't recall your gear set . But 4.10's will give you a bunch and 4.63's would handle up to 37's. And you would see 8th alot
 

JamesWyatt

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I saw an improvement in overall ease of shifting and hill climbing at altitude going to 35” KO2s and using the Tazer Mini to dial in the tire size until the GPS speed matched the speedometer (versus completely stock with 33s and the same 4:10s). I don’t know if the stock setup matched GPS or not, but it’s as if everything was set up wrong as it was stock: trans mapping, tire size, and gear combo. Something about the new setup just puts the truck into a Goldilocks zone versus stock. Same can be said for a JL with 2.0L, 35s, and 4:56 (stock XR).
 

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Honda motorcycles were notorious for using tall gears in the 70s and 80s to increase the mpg numbers. First thing everyone did was change the gearing so you could actually use 6th or go up a hill.
One tooth smaller in the front, and 3 teeth larger in the rear.
 

JamesWyatt

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I was actually suggesting to check your speedometer to make sure it's aligned with the speed as indicated by a GPS speed app on your phone. If not, you can use a Tazer or other means to adjust the tire size until the speeds do align. Most manufacturers set their speedometers a few MPH slow, and correcting that could possibly improve things for you.
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