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Old 01-30-2010, 11:35 AM   #1
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03 Jeep Wrangler Rubicon gas milage drop

I recently have noticed a drop in my gas milage on my jeep from 260 to about 240ish some times less per tank......i run a 4 inch short arm lift and 33 inch tires its a daily driver and just wonder if any one would have suggestions on where to start trouble shooting this or if its just something that happens over time.

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Old 01-30-2010, 11:39 AM   #2
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Could just be winter driving. When was the last tune up done?

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Old 01-30-2010, 11:44 AM   #3
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Could just be winter driving. When was the last tune up done?
tune up was done right before winter. the cold was what i was thinking it was too because this is the first winter with the lift too thanks for the input.
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Old 01-30-2010, 11:48 AM   #4
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Do you let it warm up on cold mornings?
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Old 01-30-2010, 11:54 AM   #5
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Do you let it warm up on cold mornings?
i would like to say yes all the time but some mornings no...get up and go
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Old 01-30-2010, 12:56 PM   #6
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man i wish i regularly could hit 200 miles to a tank...
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Old 01-30-2010, 01:03 PM   #7
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Does your part of the country switch fuel types in the winter like many do? If so, that's very likely the reason for your drop in fuel economy. There is slightly less energy content in some winter formulations so fuel economy suffers.
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Old 01-30-2010, 01:09 PM   #8
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i would like to say yes all the time but some mornings no...get up and go
Are you taking into consideration the added fuel used to warm it up. It doesn't register on your mileage. I have a major drop in MPGs in the winter.
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Old 01-30-2010, 01:24 PM   #9
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Originally Posted by Jerry Bransford View Post
Does your part of the country switch fuel types in the winter like many do? If so, that's very likely the reason for your drop in fuel economy. There is slightly less energy content in some winter formulations so fuel economy suffers.
im not sure...is there any place that i could find this info on the internet?
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Old 01-30-2010, 01:27 PM   #10
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How long have you had the 33's? Did you account for the speedo being off, or replace the speedo gear when you put them on? Also like JD'sDream said, warm up uses gas that we don't often consider. Or sitting waiting somewhere with it running, when we'd shut down if it were warmer. (Like me, sitting at the bus stop everyday).......
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Old 01-30-2010, 01:31 PM   #11
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Check to see if you pumped fues with methanol. that will reducee mileage, too.
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Old 01-30-2010, 01:33 PM   #12
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How long have you had the 33's? Did you account for the speedo being off, or replace the speedo gear when you put them on? Also like JD'sDream said, warm up uses gas that we don't often consider. Or sitting waiting somewhere with it running, when we'd shut down if it were warmer. (Like me, sitting at the bus stop everyday).......
yea speedo is correct and the drop has only been from summer to winter

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