Rear Diff. Lube Change on 2008 Ram?
#902246
01/11/11 08:05 PM
01/11/11 08:05 PM
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Joined: Jan 2003
Posts: 8,451 Highland, MI.
Sunroofcuda
OP
master
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OP
master
Joined: Jan 2003
Posts: 8,451
Highland, MI.
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I've got my dealer telling me the interval for changing the rear differential lube is every 15,000 miles on my 2008 Ram 1500. Anybody know if this is true? I find this hard to believe - I'm more accustomed to 60,000 mile change intervals as the norm.
No Man With A Good Car Needs To Be Justified
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Re: Rear Diff. Lube Change on 2008 Ram?
[Re: Sunroofcuda]
#902249
01/11/11 08:14 PM
01/11/11 08:14 PM
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Joined: Oct 2005
Posts: 5,003 WI
Dcuda69
master
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master
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Posts: 5,003
WI
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They changed mine at 15K when they changed the ring and pinion for noise issues I changed it again at 45k...it has 55k on it now. Mine's an 04. I put in reg gear oil...they call for a syn lube that seems real thin when you drain it P.S Mine is also a 3:55 open
Last edited by Dcuda69; 01/11/11 08:16 PM.
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Re: Rear Diff. Lube Change on 2008 Ram?
[Re: ahy]
#902251
01/11/11 11:08 PM
01/11/11 11:08 PM
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Joined: Jan 2003
Posts: 515 Bolingbrook, IL
HemiRunner
super street
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super street
Joined: Jan 2003
Posts: 515
Bolingbrook, IL
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My 04 2500 is the same way, 15k on both diffs using synthetic. Good thing is the gasket is reusable rubber with metal core & it gives you a chance to check out the diff. Lot of prob with bearings & ring & pinions. I believe there is a TSB out on diff noise. I use mobile 1 & just turned over 62k with no problems.
Blown & Injected, need I say more?
71 Road Runner
04 Dodge Ram 2500 4x4 CTD
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Re: Rear Diff. Lube Change on 2008 Ram?
[Re: Kern Dog]
#902253
01/12/11 08:09 AM
01/12/11 08:09 AM
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Joined: Jan 2003
Posts: 21,122 Niles , Ohio
therocks
oh wait.but hey.lets see.oh yeah.
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oh wait.but hey.lets see.oh yeah.
Joined: Jan 2003
Posts: 21,122
Niles , Ohio
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When my kid changes the fluid in his 04 Hemi Ram he just gets the Mopar fluid.Changed it at 15K the first time and at 40 K.Its due again.He figured for the cost its cheap insurance.His truck is driven pretty hard and is a SG.Rocky
Chrysler Firepower
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Re: Rear Diff. Lube Change on 2008 Ram?
[Re: AndyF]
#902254
01/12/11 09:19 PM
01/12/11 09:19 PM
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Joined: Jan 2003
Posts: 8,451 Highland, MI.
Sunroofcuda
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OP
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Joined: Jan 2003
Posts: 8,451
Highland, MI.
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Quote:
I think they want the cover pulled frequently so the rear end can be inspected. Evidently those rear ends have a lot of early failures.
Plus my truck has the lifetime drivetrain warranty, so you may be right in thinking they want to keep an eye on it. It's got 25,000 miles on it now & so far no problems. Heck, don't they know how to build rear ends anymore??
Also, in for an oil change 2 weeks ago & both outer tie-rods were bad, so they replaced them the next day. I suggested bringing in a set of GOOD ones (Moog) with zirc fittings so they could be lubed - since it was under warranty they said Mopar parts only - sorry. Next set I'll do them & install some good ones. Still, that seems pretty quick for a set of them to go bad! Also, the mechanic was telling me "bad ball joints" when the truck was on the hoist - he was pulling at 9:00 & 3:00 & we were both looking at the tie rod ends. You could plainly see the movement in them. Duh! Man, makes you wonder.
No Man With A Good Car Needs To Be Justified
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Re: Rear Diff. Lube Change on 2008 Ram?
[Re: Sunroofcuda]
#902255
01/13/11 09:41 AM
01/13/11 09:41 AM
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Joined: Jan 2006
Posts: 8,162 USA
360view
Moparts resident spammer
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Moparts resident spammer
Joined: Jan 2006
Posts: 8,162
USA
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On my 1995 I changed to Mobil One Syn 90W at 18,000 miles on the open (no anti-spin) 9.25, then changed it again at 40,000 with Mobil One Syn 90W, and yet the 9.25 differential was howling so bad at 60,000 miles that it was torn down and the pinion bearings, seals, ring and pinion and a re-designed nut with pre-applied factory white Locktite paste was used, but the differential failed again at 140,000 miles, even with gear oil changes every 20,000 miles.
Throughout the 1990s Chrysler had problems with the 9.25 that were not present in the late 1980s, and I have not seen any evidence yet that the root problem has been solved, even after the independent company American Axle entered the supply train picture.
My guesses: either the "crush sleeve", or the locking method to hold torque setting for the big nut, ... are the root of the problem
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