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Old 11-04-2015, 08:24 PM
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4 wd

How often should you use 4 WD if like me you only seem get time to drive the jeep as a DD. Is there any self lubrication that occurs in short operation in 4WD.

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Old 11-04-2015, 08:32 PM   #2
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You could use 4H in heavy rain, FL gets that and you would put the front diff to work a little.

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Old 11-04-2015, 08:37 PM   #3
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You should find a way to get ur jeep in 4wd for at least 10-15 miles a month. For lubrication purposes...

For self enjoyment, way more lol.
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Old 11-04-2015, 08:41 PM   #4
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Actually our Jeep front diff is always turning and lubricating even in 2wd. No need to be in 4wd for that.
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Old 11-04-2015, 08:41 PM   #5
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Old 11-04-2015, 09:12 PM   #6
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Thanks for posting this question. I only drive on road and will hopefully engage 4wd a few times this winter but thats it. Usually not wise to let mechanical things sit for too long unused. I need to learn our drivetrain better I'll admit.
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Old 11-04-2015, 09:22 PM   #7
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Also test out your 4LO on gravel or snow. It takes some time to get use to it.
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Old 11-04-2015, 09:49 PM   #8
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Originally Posted by David9962000 View Post
You could use 4H in heavy rain, FL gets that and you would put the front diff to work a little.
4wd is not AWD, using 4wd on pavement at high speed is an easy way to need a new front driveshaft. Not web wheeling here, I have rescued buddies who thought it was a good idea and ended up blowing a rzeppa joint all over the place on the freeway.

There is no reason to ever use 4wd if you dont need it. The entire drivetrain is always spinning regardless of 2WD or 4WD so lubrication is not an issue, there is just no torque applied to the front wheels in 2WD.

I would suggest using 4wd fairly often in vehicles that have electronically activated 4WD. Getting stuck halfway down Pikes Peak in a Ford Explorer that refuses to come out of 4WD because the actuator was gunked up is never fun, ask me how I know! Fortunately jeeps are mechanical, not electronic.
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Old 11-04-2015, 09:50 PM   #9
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Some misguided info in this thread.

Wrangler 4wd is not intended for use in rain. Although your drivetrain may not explode as some believe - it's best to not shift into 4wd (high or low unless you are on dirt or gravel loose surface that will allow the tires to relieve any bind.

The front axle is spinning away in 2wd. No need to shift into 4wd for lubrication purposes.

Although there will be some transfer case gears not engaged during 2wd. The driveline still passes through the transfer case to the rear (2wd) drive shaft. The transfer case fluid is still being cycled.

Some of this mind set may be left over logic from the manual hub days. - Anybody have actual owners manual references on this?
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Old 11-04-2015, 10:01 PM   #10
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Originally Posted by 14Trailcrawler View Post
Some misguided info in this thread.

Wrangler 4wd is not intended for use in rain. Although your drivetrain may not explode as some believe - it's best to not shift into 4wd (high or low unless you are on dirt or gravel loose surface that will allow the tires to relieve any bind.

The front axle is spinning away in 2wd. No need to shift into 4wd for lubrication purposes.

Although there will be some transfer case gears not engaged during 2wd. The driveline still passes through the transfer case to the rear (2wd) drive shaft. The transfer case fluid is still being cycled.

Some of this mind set may be left over logic from the manual hub days. - Anybody have actual owners manual references on this?
Seen it happen. Not saying it will, but it can. Same guy lost his transfer case a few weeks after when he did it again in light snow.
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Old 11-04-2015, 10:07 PM   #11
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This is why I like this forum. Very informative. I have a Sierra 4x4 but it has an electronic transfer and didn't realize there was a difference.
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Old 11-04-2015, 10:07 PM   #12
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Seen it happen. Not saying it will, but it can. Same guy lost his transfer case a few weeks after when he did it again in light snow.
We agree. I think we were posting at the same time.
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Old 11-04-2015, 10:13 PM   #13
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I try to put it in 4 hi every month or so, even if it's only up and down the driveway. 4lo every once in a while just for fun.

I've been driving jeeps since before anybody had ever heard of AWD and I get the concept that on a jeep, you shouldn't just fly down the road in 4hi 24/7. However, anybody who's ever had to fight a stuck transfer case stick will appreciate that it's nice to know that things have been wiggled on a regular enough basis that you have some level of confidence that it will actually move when you need it.
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Old 11-04-2015, 11:00 PM   #14
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We agree. I think we were posting at the same time.
ah gotcha
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Old 11-04-2015, 11:22 PM   #15
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This is why I like this forum. Very informative. I have a Sierra 4x4 but it has an electronic transfer and didn't realize there was a difference.
I shifted thru 4hi and 4lo ab once a month on my '03 and '13 Silverado. The transfer case shift motor went out on my '03, "they" say the motor freezes up if it isn't used much so turn the knob ab once a month for the electric motor's sake.
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Old 11-05-2015, 12:23 AM   #16
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Here is a quick answer. He is speaking more to overland and mentioned center diff locking. When in 4x4, our transfer case operates the same as a locked center diff. The author uses a stunt driver to show 4x4 is a safety issue. The vehicle handles more reliably. My only additional comment would be the Wrangler uses U joints on the front rather than CV joints. If you really have to turn the wheel, the U joints really start to bind.

Not sure about the vehicles he demonstrates with. If anyone knows, it would be very interesting to hear.

Here is the link, judge for yourself. The demo starts at about 3:00min

http://www.youtube.com/watch?v=EBmw6Wpfe6M
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Old 11-05-2015, 02:32 AM   #17
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Some may not be aware .Your entire front axle driveline is turning in 2wd.The disconnecting point is in the transfer case.Your front driveshaft or front axle will not explode if you shift into 4wd on pavement, its already turning the same speed as the rear.The problem occurs when you turn the wheel and the front can not slip enough due to being engaged.Then you get drive line binding which will damage the front axle shafts ujoints and possibly the transfer case.

In the winter I will shift on the fly as needed.I will drive on patchy snow and ice and dry pavement in 4wd. If you need to be in 2wd it will let you know.9 Jeeps in the past 30 years and not a single driveline failure.My 95 I bought new was sold with 285k miles on it.
To OP the driveline does not need cycled but the shift linkage for the transfer case is what needs cycled periodically to make sure it works.So yes it is probably a good idea to shift it into 4h and 4l every couple of months.Just do not use 4l on dry hard surfaces.
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Old 11-05-2015, 06:07 AM   #18
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This is why I like this forum. Very informative. I have a Sierra 4x4 but it has an electronic transfer and didn't realize there was a difference.

There isn't. You shouldn't drive your pickup in 4 High on dry roads either. Auto mode, if you have it is different as it allows the t case to be an open differential and it would be ok.
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Old 11-05-2015, 10:37 AM   #19
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Thank you guys, good to know.
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Old 11-05-2015, 11:05 AM   #20
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I have this one stretch on my normal ride that is a half mile from my last turn to my house I use 4h on once a month. I make sure I am going strait after the turn and pull the lever back, get up to about 45mph and pop it back to 2H before turning in my drive. This is on very dry pavement and does not cause any binding since I don't have to turn. The normal "you can't use 4X4 on pavement it will blow up your rig" is a little overstated in my opinion if you are going straight and just making sure everything stays loose I see no problem.
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Old 11-05-2015, 02:37 PM
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Thanks, great answers. Did it today on way to store for a few minutes, so I won’t forget to do it once in awhile
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Old 11-05-2015, 02:58 PM   #22
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The problem is simple, you need to take your jeep off the mall's curb and go wheeling. Then you don't have any issues. Then you'll need lockers, a proper lift, more armor, bigger 37" Toyo tires, aftermarket beadlock wheels, an sPOD, lots of LED lighting, a CB, a "Wayoflife" sticker on the hood, on board air, and a 18 year old college student girl friend.
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Old 11-05-2015, 03:21 PM   #23
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The problem is simple, you need to take your jeep off the mall's curb and go wheeling. Then you don't have any issues. Then you'll need lockers, a proper lift, more armor, bigger 37" Toyo tires, aftermarket beadlock wheels, an sPOD, lots of LED lighting, a CB, a "Wayoflife" sticker on the hood, on board air, and a 18 year old college student girl friend.
Geeze, lol, now I see what I'm doing wrong.
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Old 11-05-2015, 03:26 PM   #24
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The problem is simple, you need to take your jeep off the mall's curb and go wheeling. Then you don't have any issues. Then you'll need lockers, a proper lift, more armor, bigger 37" Toyo tires, aftermarket beadlock wheels, an sPOD, lots of LED lighting, a CB, a "Wayoflife" sticker on the hood, on board air, and a 18 year old college student girl friend.
This, sir, is brilliant
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Old 11-05-2015, 03:32 PM   #25
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I use my Jeep for work and often pull a trailer. There have been many times where I take my front drive shaft completely off for weeks at a time when I know I won't be doing wheeling and will be using it strictly for work to get better fuel mileage and have never had any issues.
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Old 11-05-2015, 03:34 PM   #26
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Ok question for y'all, I just got my first jeep (yes I love it). But never have had anything 4x4, in the winter if it snows I know the road to work some times gets cleaned some times not or they do it in spots. So say going to work should I leave it in 2wd and only go to 4wd if I think it needs it or can I drive in 4wd the whole time. More likely driving under 55 the whole time but I'm in the country so it's not all straight but all kinds of hills. And I don't want to pop up over a hill and be in snow trying to drive and put it in 4wd all really quick.
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Old 11-05-2015, 07:14 PM   #27
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So say going to work should I leave it in 2wd and only go to 4wd if I think it needs it or can I drive in 4wd the whole time.
Unless the roads are completely covered in snow leave it in 2WD.
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Old 11-05-2015, 07:33 PM   #28
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If the road is bare you'll want to put it back to 2wd but in spotty conditions I've left every 4x4 I've owned in 4wd if I felt it was needed. Jeep 4wd isn't special. It's no different than what you get in pickups or other vehicles with traditional 4wd systems. If you'll be making any sharp turns on potentially bare surfaces you'll definitely want 2wd though.

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