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Old 09-10-2008, 01:36 PM   #1
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rear wheel drive vs. 4wd

dumb question, but just curious....does anyone know how much of a difference in gas consumption there is when you drive your wrangler in 4wd compared to rear wheel? i have a 94 yj. thanks! woot!

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Old 09-10-2008, 04:59 PM   #2
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there's a difference, i can't tell you exactly the mpg's. but its noticeable. there's no reason to drive your jeep in 4 wd, unless the road is slippery (ice and snow), or you're off road though

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Old 09-10-2008, 07:51 PM   #3
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Not only is there no reason to, but you will damage parts if you drive on dry pavement in 4 wheel drive.
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Old 09-10-2008, 11:32 PM   #4
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Even off road I keep mine in 2wd until I really need 4wd.
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Old 09-11-2008, 02:29 PM   #5
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Originally Posted by parrot head View Post
Not only is there no reason to, but you will damage parts if you drive on dry pavement in 4 wheel drive.
the only reason i asked was because i got caught in a massive non stop rain storm the other day and drove it around like that for about 40 miles or so. so, im just curious to see if i burned way more gas. thanks for the concern though
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Old 09-11-2008, 09:03 PM   #6
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Even on wet pavement I wouldn't recommend driving in 4wd. I'd say a good way of judging whether to use it is if you don't feel in control in 2wd. Even so, in rain I would just slow down.

Traction at street speeds is hell on everything in your drive train from transfer case forward when 4wd is engaged.

And yes you will burn more fuel in 4wd. You're turning two extra tires.
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Old 09-12-2008, 04:32 PM   #7
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i dont use 4x4 until im almost stuck. snow, dirt, rocks, mud.. etc

replacing spindles and 4x4 components sucks
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Old 09-14-2008, 03:31 PM   #8
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Quote:
Originally Posted by jeep_hippy View Post
the only reason i asked was because i got caught in a massive non stop rain storm the other day and drove it around like that for about 40 miles or so. so, im just curious to see if i burned way more gas. thanks for the concern though
with the dana 30 front end there is not a huge notice in loa becase of the axles internals. but if you had a way to remove the front drive shaft then tere would be a gain in gas milage. less rotating mass.

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