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Old 08-28-2013, 03:13 PM   #1
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21mpg

315 miles on 15 gallons, how in the hell...

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Old 08-28-2013, 03:17 PM   #2
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315 miles on 15 gallons, how in the hell...
Is your jeep raised with bigger tires and the stock speedo gear?

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Old 08-28-2013, 03:25 PM   #3
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I get roughly 280-295 (all the way to E) on my rig. I run 31's no lift stock gears.
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Old 08-28-2013, 03:37 PM   #4
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EPA rated that year for 15 city and 17 highway.
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Old 08-28-2013, 06:09 PM   #5
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That's great! I've filled my 4.0 up twice so far and the best was 17.5, and I thought that was pretty darn good.
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Old 08-28-2013, 06:14 PM   #6
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tailwind must have been hurricane strength
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Old 08-28-2013, 06:54 PM   #7
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Quote:
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tailwind must have been hurricane strength
That was what I was thinking
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Old 08-28-2013, 08:21 PM   #8
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315 miles on 15 gallons, how in the hell...
What's the specs of your jeep? That's almost unheard of. For me at least
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Old 08-28-2013, 09:26 PM   #9
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maybe someone slipped some gas into your tank while you werent looking. :P
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Old 08-29-2013, 07:50 AM   #10
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maybe someone slipped some gas into your tank while you werent looking. :P
Haha if only I'd be so lucky,

Specs:

95 4.0L 5 Speed Manual

2.5 lift

225/75/15

Throttle body + Headers + Borla Cat back

I average about 17 with mixed driving, if I'm 4wheeling its about 14mpg, 20 if I'm straight highway
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Old 08-29-2013, 10:29 AM   #11
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Typically when you settle into a highway cruise, the fuel economy goes up slightly. With a manual trans, you can control your shift points a lot better.
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Old 08-29-2013, 07:33 PM   #12
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I Shit you not I got just shy of 23 mpg with my 2.5l on the highway a few times before I lifted it. Now I get about 18-19.
All that going about 60ish. If I go greater than 65 I can bank on dropping at least 3mpg
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Old 08-29-2013, 07:44 PM   #13
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With 4.88 gears, 33" tires and a TB 2.5 I get between 16-20 mpg. This is very little highway driving and speeds under 65.
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Old 08-29-2013, 07:55 PM   #14
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4.2L 258ci with weber 32/36, nuttered, no cat, 3.55 gears, auto tranny, 32x11-1/2 tires. Best mpg yet 13.1 highway.
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Old 08-29-2013, 08:31 PM   #15
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4.2L 258 Holly carb, driving like an old lady, shifting at 2K and staying under 60 by choice only ...... 15.5 MPG
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Old 08-29-2013, 09:46 PM   #16
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4.2L 258ci with weber 32/36, nuttered, no cat, 3.55 gears, auto tranny, 32x11-1/2 tires. Best mpg yet 13.1 highway.
I can second this! Except with a manual
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Old 08-30-2013, 12:14 AM   #17
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I managed about 25 mpg on my 2.5L going through the mountains in about a 160 mile round trip. Burned half a tank of gas, that was both highway driving and general shenanigans out in the desert. About 10 miles of the trip was coasting downhill at around 65-70mph, then most of the return trip was driving downhill.
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Old 08-30-2013, 06:54 AM   #18
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This is generally at 70mph (standard speed where I am is 80 in a 55 zone cops included) driving around at 65 can be dangerous sometimes as everyone is flying past you (DC/Baltimore area).

Generally I just take it out of gear and coast to red lights, I don't gun it everywhere, and draft semis as much as possible.
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Old 08-30-2013, 04:43 PM   #19
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I get about 15 with 33s & 3.07s at 65
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Old 08-31-2013, 11:13 AM   #20
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I commute back and forth to work in my 95, 2.5, no lift, stock size tires at 75mph every day and get between 20 and 22 mpg consistently.
Considering I previously had a 2006 Nissan Frontier that never got more than 14mpg, I am quite pleased!
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Old 09-15-2013, 01:34 PM   #21
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On my latest trip to Ohio from WI I got 22, usually I get about 19 but I had the hardtop on this time so I attribute the extra mpg to that (lesser resistance?)
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Old 09-15-2013, 01:40 PM   #22
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I'm lucky, very lucky if i get better than half of that. But I didn't buy it for economy. lol
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Old 09-15-2013, 01:45 PM   #23
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I get 24 MPG On my New 2014 JK, When my wife's not Riding with me, I think her Boobs weigh about 30lbs each.
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Old 09-16-2013, 12:29 AM   #24
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I see a common theme with us 4.2 guys. My gauge is reading just below 1/2 tank at 92 miles with a full day of hard wheelin yesterday. I am usually getting an uncorrected 200 miles per tank, which is probably a bit over 220 when corrected for tire size. Terrible.
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Old 01-04-2014, 08:55 AM   #25
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I get 24 MPG On my New 2014 JK, When my wife's not Riding with me, I think her Boobs weigh about 30lbs each.
Rofl
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Old 01-04-2014, 02:42 PM   #26
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what's this fuel economy you speak of? Never heard of it..
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Old 01-04-2014, 08:16 PM   #27
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Mpg

I think a lot has to do with driving style. I have a 94 with a 4.0, 33's and 3.07s and I check mine pretty regular. I get anywhere between 16 and 17 but I'm pretty easy on it. If you haven't done the tank mod I highly recommend it. It has added about 100 miles in between fill ups. It's pretty easy and we'll worth it. Even with the good mileage I'm about to regear.
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Old 01-05-2014, 06:17 AM   #28
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My last fill up was 11.2 mpg the one before that was 13.2 mpg. I used to run 5w30 poyal purple and got 16/18 mpg in the spring and fall but the lifters chattered and I started using 5w40 rotella, gas millage went down to about 15mpg. in the winter my millage always goes down. I think its time for new plug wires or something.

My jeep is sporting 33s and 3" of lift. 4.0 liter with stock gears. I was going to change gearing to 4:10 but may do a 3.3 cummings swap if I can find more info on it so stock gears would be in order from what I have read. 30 mpg would be awesome as my jeep is my daily driver in the cold months. My bike gets 65mpg so I ride it till it gets below freezing.

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