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  #1  
Old 06-15-2015, 11:10 AM
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Changing axle fluid at 20K miles?

Just dropped off my 2014 GC for two recalls and an oil change. I was surprised when they told me I should change the front and rear differential fluid. I thought that seemed pretty early, so I declined since I thought they were trying to pull a fast one on me. I looked it up in the manual and it says:

Inspect the front and rear axle fluid, change if using your vehicle for police, taxi, fleet, offroad or frequent trailer towing.


Anybody changing their fluid at 20K miles? They wanted $400 for it. Since I haven't gone offroad or towed anything yet, I think I can wait a while longer.


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  #2  
Old 06-15-2015, 11:42 AM
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Re: Changing axle fluid at 20K miles?

Quote:
Originally Posted by not_too_shabby View Post
Anybody changing their fluid at 20K miles? They wanted $400 for it. Since I haven't gone offroad or towed anything yet, I think I can wait a while longer.
They're playing you. You can wait longer.... A lot longer. That mileage, along with the price they quoted you is insane. Look at the ZF 8-Speed Transmission in all the Grand Cherokees. They are supposedly, "Filled & Sealed For Life". Or so they say.

A transmission receives a lot more heat, along with wear and tear than a differential does. Especially when towing. So how can a differential unit require $400.00 worth of service at just 20K miles, while the trans can go on supposedly forever? Not only that, but the best synthetic differential fluid costs around $20.00 a quart. The ZF 8-Speed fluid costs $47.00 a quart and takes 10+ quarts. $400.00 for a differential fluid change is nonsense. If I were having it done, I would find a shop more reasonable. It's not that difficult of an undertaking.
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Old 06-15-2015, 11:42 AM
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Re: Changing axle fluid at 20K miles?

Usual dealer ripoff strategy - $400 dollars, are they going to replace the whole axle/diff and put a locker in? For that price I would expect - yes!


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Old 06-15-2015, 11:51 AM
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Re: Changing axle fluid at 20K miles?

I would have laughed myself out the door


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Old 06-15-2015, 12:52 PM
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Re: Changing axle fluid at 20K miles?

Geezus, some dealerships are unbelievable. I would have talked to a manager and asked why exactly they were trying to rip you off. Not only was the price absolutely ridiculous, but the fact that they were trying to get you to do a service you don't need.
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Old 06-15-2015, 01:14 PM
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Re: Changing axle fluid at 20K miles?

Is your jeep a keeper or one trick pony?

If a keeper, I would highly recommend you change the fluid. Tons of metal particles floating around in the diffs from wear on break in. I have changed mine twice already and I only have a couple of thousand miles on the Jeep, oil was full of pearl and I am sure if I did a oil analysis the wear metal count would be thru the roof.

Amsoil had a white paper on this and their recommendation was to change the diffs early after break in to flush the metals out and then you could go 50K or so.

Randys Ring and pinion states

"It is a good idea to change the gear oil after the first 500 miles in order to remove any metal particles or phosphorus coating that has come from the new gear set. This is cheap insurance and a good time to discover any problems before they grow too big."


I have a 5 gallon pail of Redline 75w-90 GL5 with the posi add that I paid 75 per pail so my cost is about 4$ a qt, so for 10$ worth of gear oil and a 1/2 hr of time I can change the diffs. I was amazed both times have much pearl was in the gear oil. On my other 4x4s I changed them at about 5K miles and again at 20K and every 50k therafter.

It is really cheap insurance to change them.

unless of course the Jeep is a one trick pony your going to trade in a few years, then who cares, the other guy can deal with any issues down the road like leaky pinion seals or noisey carrier bearings. One of the reasons on every used car I ever buy, all the fluids are changed right away.
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  #7  
Old 06-15-2015, 01:21 PM
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Re: Changing axle fluid at 20K miles?

I was furious when they pulled that on my with my MY11. I took out my tablet and showed them the service schedule. Replaced with MY15 at 52,000 miles with no issues. And no, it was not a taxi or police car and no towing and minimal off road.
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Old 06-15-2015, 01:51 PM
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Re: Changing axle fluid at 20K miles?

I reviewed some of the write ups on this board and it looks pretty straight forward to do it myself and with quadralift I can just put it in OR2 and do it without jacking it up. I have the v6 overland so no ELSD. Looks like you can get mopar get oil for $34 a quart or Mobil 1 for $20. Sound right?


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Old 06-15-2015, 03:45 PM
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Re: Changing axle fluid at 20K miles?

Quote:
Originally Posted by not_too_shabby View Post
I reviewed some of the write ups on this board and it looks pretty straight forward to do it myself and with quadralift I can just put it in OR2 and do it without jacking it up. I have the v6 overland so no ELSD. Looks like you can get mopar get oil for $34 a quart or Mobil 1 for $20. Sound right?


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There is some merit to the idea of one early change then go back to normal schedule....your vehicle, your call. Any time I buy used, I change all fluids.

Even offroad shouldn't need it unless you are running the Baja every weekend OR regularly ford where the water is up over the axles.
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Old 06-15-2015, 03:51 PM
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Re: Changing axle fluid at 20K miles?

Quote:
Originally Posted by not_too_shabby View Post
I reviewed some of the write ups on this board and it looks pretty straight forward to do it myself and with quadralift I can just put it in OR2 and do it without jacking it up. I have the v6 overland so no ELSD. Looks like you can get mopar get oil for $34 a quart or Mobil 1 for $20. Sound right?


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be careful, put a jack stand under just in case.

Also a out board drive pump which threads onto qt bottles is needed and I think I used 10mm allen wrench. Always loosen the fill plug first. A six pack of Sam Adams is optional for consumption while draining.
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Old 06-15-2015, 04:06 PM
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Re: Changing axle fluid at 20K miles?

I dunno, I mean I kinda see the idea behind early fluid changes, but I just think with modern vehicles its a waste of time and money. I mean back in the day, people used to say on a new car to change the oil and get the "break in oil" out. These days the first motor oil change is done at the same interval as any change. Our other car which is a 2014 Toyota Highlander doesn't even call for its first oil change until 10,000 miles. My opinion, anything before that is just a waste of time and money. Some say cheap insurance? Ok fine I get that, but most people wont be driving the same car to 200,000 miles where that early change might possibly be beneficial.
Again, just my opinion, plus the other factor is sometimes I think when stuff gets tampered with too much that causes more issues than just leaving the damn car alone lol. Messing up bolts, using the wrong fluid or amount, messing something up when jacking the car up, scratching something, etc etc. To further make my point, if I was looking at two identical cars in every way shape and form, one had oil changes done at a dealership way earlier than schedule lets say for arguments sake every 3,000 miles, and one done on time everytime. I would actually prefer the car that had oil changes at proper intervals and spent less time in the hands of some dofus at the dealership being tinkered with.
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Old 06-15-2015, 04:24 PM
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Re: Changing axle fluid at 20K miles?

I changed the fluid 2 weeks or so ago at 37000 miles on my 2012 WK2. I also changed the transfer case fluid at the same time. For the diff fluid, I used the mopar "special" expensive fluid. We do this once every 3-4 years so... it is not really expensive. I believe it was $54/quart. For transfer case, I used Mopar ATF fluid as well. I purchased all this from the dealership and saved the receipts (I have the extended warranty and wanted to have these as proof of maintenance in case they ask).

It is a very easy job. Hope this helps.
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