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Old 06-23-2014, 04:36 PM   #1
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Break In Milage

Got a 2014 JK with 3.73 and 265/75/16 BFG A/T's on her. Currently I have put 2000km (1200mi) and I am only getting 16 mpg with mostly 60 mph highway driving. I keep seeing JKUR's getting 19 or 20. I figure it will get better as the engine breaks in. Anyone else notice a decent difference in mpg after a while of breaking in? If so, how long did it take to break?

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Old 06-24-2014, 06:58 AM   #2
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Got about 2500 Km's on mine. 4.10's and I averaged out last 5 days mixed city/ highway 19.2 mpg

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Old 06-24-2014, 07:40 AM   #3
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A major contributor to the mileage you get, is if you are filling up with gasoline or E10. Where I live, 99% of the stations are actually selling E10 year round at their pumps.

E10 is 10% ethanol and sometimes called "winter" gas.
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Old 06-24-2014, 07:41 AM   #4
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Well damn. I'm not heavy on the foot or anything. I use 60L and get 450km out of a tank. I expected more than 500km at least when I bought the thing
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Old 06-24-2014, 07:42 AM   #5
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A major contributor to the mileage you get, is if you are filling up with gasoline or E10. Where I live, 99% of the stations are actually selling E10 year round at their pumps.

E10 is 10% ethanol and sometimes called "winter" gas.
I have put nothing but E-Free gas in
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Old 06-24-2014, 07:51 AM   #6
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I have put nothing but E-Free gas in
Your mileage should improve. Mine got better after the first 1400 miles or so. I'm usually around 18.5 with E10 (no choice here), and plenty of mixed driving, highway speeds 70-75.
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Old 06-24-2014, 07:58 AM   #7
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I have put nothing but E-Free gas in
Where are you getting ethanol free and what octane is it?
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Old 06-24-2014, 08:05 AM   #8
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Where are you getting ethanol free and what octane is it?
I am pretty sure that any ESSO station is ethanol free. I live in St Jacobs so the ESSO at the corner of King st and Lobsinger Line is where I get the E Free gas
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Old 06-24-2014, 05:26 PM   #9
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Yeah, I'm having the same scenario here as well. I've only got 800 miles on mine. I've been averaging 15.5 MPG. Sure hope it gets better!
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Old 06-24-2014, 06:24 PM   #10
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2014 JK Sport 'S' automatic with 3.73, stock 17 inch wheels/tires, hardtop, 2500 miles; showing 19.9 mpg today on the display, mostly easy city driving in Jacksonville; (Slow lane (i.e. I drive the posted Florida speed limit) as I'm usually not in any hurry. I have not reset the mpg for months. Shell gas.) Seemed to have improved mpg on/around the 2000 mile mark, maybe after an oil change.
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Old 06-24-2014, 06:28 PM   #11
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I am pretty sure that any ESSO station is ethanol free. I live in St Jacobs so the ESSO at the corner of King st and Lobsinger Line is where I get the E Free gas
im pretty sure im one of a few people who actually know what your talking about, they probably havent clued in that you are canadian. if I see ya on my way to the cottage ill honk like im driving in toronto at ya
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Old 06-24-2014, 06:30 PM   #12
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ooh and I believe most of the places run enthanol free, I havent seen too many that have ethanol around
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Old 06-24-2014, 06:31 PM   #13
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im pretty sure im one of a few people who actually know what your talking about, they probably havent clued in that you are canadian. if I see ya on my way to the cottage ill honk like im driving in toronto at ya

Haha be my guest. I'll just assume it's just another crazy jeeper. Only question is, where is your cottage if you are going past that gas station?
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Old 06-24-2014, 06:33 PM   #14
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I go through st jacobs and my cottage is at the end of 86
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Old 06-24-2014, 06:37 PM   #15
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Ah yea that makes sense then. Would have thought you would just stay on hwy 85. But St Jacobs is a nice little place to putter through
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Old 06-24-2014, 06:39 PM   #16
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naw 85 takes me right to my cottage. with 1 fork and 1 left turn and im there. and your farmers market is amazing. used to go there every sunday
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Old 06-24-2014, 06:47 PM   #17
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Yea. Considering I live there, I rarely go. Too many people
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Old 06-24-2014, 06:52 PM   #18
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would get an apple pie sunday morning and it would be gone by sunday night
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Old 06-25-2014, 05:59 AM   #19
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I am pretty sure that any ESSO station is ethanol free. I live in St Jacobs so the ESSO at the corner of King st and Lobsinger Line is where I get the E Free gas
I did a little research on Esso's website. All of their gas has octane, up to 10%. They are however a top tier gas. As far as I know, the only non-ethanol gas we would be able to get around here is Shell V-Power. And with the added and unnecessary higher octane and the added cost per litre I don't see it being beneficial in any way.
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Old 06-25-2014, 07:13 AM   #20
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I bought mine new in January. It stayed right at 17 MPG until April. As soon as the weather warmed, it went to 19.5 MPG. Same driving route and style. A little was probably break-in, a little getting used to how the Jeep drives, but mostly warm weather. If I use ethanol free 91 octane fuel, I gain about 5% in mileage. That does not offset the extra cost of the fuel which is about 8% higher than 87 octane.
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Old 06-25-2014, 08:22 AM   #21
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I did a little research on Esso's website. All of their gas has octane, up to 10%. They are however a top tier gas. As far as I know, the only non-ethanol gas we would be able to get around here is Shell V-Power. And with the added and unnecessary higher octane and the added cost per litre I don't see it being beneficial in any way.
Well maybe it isn't all esso's or something but the one at the corner that I go to everytime says "Still 100 Percent Ethanol Free" on the screen
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Old 06-25-2014, 08:24 AM   #22
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Well maybe it isn't all esso's or something but the one at the corner that I go to everytime says "Still 100 Percent Ethanol Free" on the screen
If that's the case I may run up there for a tank or 2 to compare. Thanks for the info.
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Old 06-25-2014, 08:26 AM   #23
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Not a problem. I havnt noticed much of a difference between the 2 tanks of 10% and the rest of the E FREE but maybe I will as milage gets better
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Old 06-25-2014, 08:27 AM   #24
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Check your mileage after your first oil change.
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Old 06-25-2014, 08:37 AM   #25
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Check your mileage after your first oil change.
Plan in that too. At 275 km on the odo now. Nothing but Petro Canada used. Thinking first oil change at around 500 km, another tank or 2 of Petro then try the Esso 0 ethanol. See what the numbers say.
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Old 06-25-2014, 08:41 AM   #26
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Check your mileage after your first oil change.
Since it's so new, should I change the oil before the regular 5000km or is it fine just to do regular oil 5kkm oil changes?
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Old 06-25-2014, 08:49 AM   #27
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Since it's so new, should I change the oil before the regular 5000km or is it fine just to do regular oil 5kkm oil changes?
I would do the first oil change somewhere around or before 1,600km. When breaking in you want to be kind of hard and random on the engine but gentle and kind to the gears It is a balancing act.
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Old 06-25-2014, 09:06 AM   #28
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Hmm might look into it then as I just turned 2000km
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Old 06-25-2014, 12:19 PM   #29
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Just checked mine, 20.3, after 2500 miles, mostly city driving. 3.21 gears and 6 speed manual.
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Old 06-25-2014, 12:35 PM   #30
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I'm getting 18.6Mpg on my '14 JKWW 6 speed, 3.73 with stock BFG MT's.
I just turned 2,000 miles.

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