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Draining the FF gear and xfer case oil? #4595655
12/06/17 05:10 AM
12/06/17 05:10 AM
Joined: Sep 2013
Posts: 10,683
Indiana
dlundblad Offline OP
dlundblad  Offline OP
Joined: Sep 2013
Posts: 10,683
Indiana
Happy Wednesday folks.

2016 Wrangler fitted with a D30 front and D44 rear with limited slip as well as the transfer case. Not sure on the model, but it's comparable to the 231 found in the Cherokee. 2wd, 4hi, 4lo and neutral.

Probably going to go synthetic 75w90. I'd have to recheck the OM, but I am 95% certain it does not require a synthetic, but this is BITOG. The transfer case most likely requires ATF+4.

Also, Dana (or Jeep) finally copied the great Toyota and added a drain plug to their differential housings. Not sure when this happened, but I know for a fact the 2009 Rubicon my 'rents had with front and rear D44's did not have them. "Here's a highly capable off road machine. Let's make it a chore to drain the gear oil!" Meanwhile, there's Toyota. Drain, fill, done in 30 minutes tops with no RTV, mess etc.


03 Jeep WJ 4.0 202k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 186k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 153k Synpower 5w30 Supertech ST3980 (Ecore)

Re: Draining the FF gear and xfer case oil? [Re: dlundblad] #4595688
12/06/17 06:05 AM
12/06/17 06:05 AM
Joined: Mar 2014
Posts: 452
Eleanor, West Virginia
thunderfog Offline
thunderfog  Offline
Joined: Mar 2014
Posts: 452
Eleanor, West Virginia
As someone with a 4Runner, I can vouch for this. I'm not very mechanically inclined, even though I do oil changes and such, and the rear diff + xfer case fluids were super easy. Still have to do the front diff however, which is a bit more challenging.


'16 4 Runner Kendall GT-1 FS 0w-20
'14 CX-5 GT AWD - QSUD 0w-20
'78 Evinrude 15HP - E/J TC-W3
Honda GCV160 - Pennzoil Ultra 10w-30
Re: Draining the FF gear and xfer case oil? [Re: dlundblad] #4595697
12/06/17 06:21 AM
12/06/17 06:21 AM
Joined: Sep 2010
Posts: 7,594
Planet Earth
2015_PSD Offline
2015_PSD  Offline
Joined: Sep 2010
Posts: 7,594
Planet Earth
Do you tow with it? If so, 75W-140 is the recommendation. If it were mine (and I were not towing), I would grab some Amsoil 75W-110 which is the viscosity the upper end of 75W-90 was before the J306 tables were updated.


Re: Draining the FF gear and xfer case oil? [Re: dlundblad] #4595698
12/06/17 06:24 AM
12/06/17 06:24 AM
Joined: Dec 2016
Posts: 137
Long Island, N.Y.
incognito_2u Offline
incognito_2u  Offline
Joined: Dec 2016
Posts: 137
Long Island, N.Y.
The Transfer Case definitely takes ATF+4 fluid.
Jeep specs SAE 80W-90 (API GL-5) Fluid for the Front Differential.
Jeep specs SAE 80W-90 (API GL-5) Fluid for the Rear Differential. BUT... if towing, Synthetic SAE 75W-140 with limited slip additive.

Last edited by incognito_2u; 12/06/17 06:26 AM. Reason: 2015_PSD beat me to it!

2006 Jeep Commander 3.7 V6 -110k (PUP/XG3600)
2006 Toyota Corolla 1.8 VVTi -79k (PPHM/XG4386)
1999 Toyota Corolla 1.8 -80k (PUP/XG4386)
1998 Toyota Corolla 1.8 -62k (PUP/XG4386)
Re: Draining the FF gear and xfer case oil? [Re: dlundblad] #4595701
12/06/17 06:27 AM
12/06/17 06:27 AM
Joined: Aug 2006
Posts: 9,887
Central Washington
Colt45ws Offline
Colt45ws  Offline
Joined: Aug 2006
Posts: 9,887
Central Washington
Agree with PSDs rec of the Amsoil 75W110 if you are not towing.
If you need to have something available off-the-shelf, I recommend Synpower 75W90, as it meets the tougher SAE J2360 specification.
And pretty much all syn gear oils have LS additive in it. I would run them straight, and add additive only if it was making noise.

Last edited by Colt45ws; 12/06/17 06:28 AM.

-Colton
2002 Ford Crown Vic PI 207k, Ex-Kootenai County, ID Unit #42
Down for engine swap
2003 Ford Crown Vic PI 75k
Castrol EDGE HM 5W30, Fram XG2
Re: Draining the FF gear and xfer case oil? [Re: dlundblad] #4595797
12/06/17 08:40 AM
12/06/17 08:40 AM
Joined: Jun 2002
Posts: 19,520
Iowegia - USA
MolaKule Offline
MolaKule  Offline
Joined: Jun 2002
Posts: 19,520
Iowegia - USA
I would use Amsoil SVG 75W90 in the front differential and Amsoil SVT 75W110 in the rear differential.


Scars remind us of where we have been, but do not have to dictate where we are going.
Re: Draining the FF gear and xfer case oil? [Re: dlundblad] #4595864
12/06/17 09:53 AM
12/06/17 09:53 AM
Joined: Sep 2013
Posts: 10,683
Indiana
dlundblad Offline OP
dlundblad  Offline OP
Joined: Sep 2013
Posts: 10,683
Indiana
Is 3000 miles on the vehicle too early to drain the gear and t case oil?

The idea is to get the break in metals out.


03 Jeep WJ 4.0 202k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 186k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 153k Synpower 5w30 Supertech ST3980 (Ecore)

Re: Draining the FF gear and xfer case oil? [Re: dlundblad] #4595878
12/06/17 10:04 AM
12/06/17 10:04 AM
Joined: Sep 2010
Posts: 7,594
Planet Earth
2015_PSD Offline
2015_PSD  Offline
Joined: Sep 2010
Posts: 7,594
Planet Earth
Originally Posted By: dlundblad
Is 3000 miles on the vehicle too early to drain the gear and t case oil? The idea is to get the break in metals out.
I waited until 9K on my F-250 and 13K on my F-150 (though I wanted to drain the F-150 at 10K). I would wait until at least 5K to be sure that it is fully broken in or you will be adding more wear metals to the new oil in short order (unless you are going to change it again in the near future). Also, is your T-Case in constant use? If not, there will not be any wear metals to remove.

Re: Draining the FF gear and xfer case oil? [Re: dlundblad] #4595994
12/06/17 11:19 AM
12/06/17 11:19 AM
Joined: Feb 2009
Posts: 8,806
Texas
440Magnum Offline
440Magnum  Offline
Joined: Feb 2009
Posts: 8,806
Texas
Originally Posted By: dlundblad
Is 3000 miles on the vehicle too early to drain the gear and t case oil?

The idea is to get the break in metals out.


Its never "too early," but honestly I don't think gears are really done shedding their early break-in material for at least 10k miles. You can do it now, but I'd do it again at 10k-20k.

Remember, these gears often live 200k miles for people who NEVER change the gear oil, so you don't really have to change early at all. But if you do, it makes the most sense (to me anyway) to wait until you're pretty sure the high wear rate period is over and done.


'66 Dodge Polara & '69 Dodge Coronet R/T both 440/727
'08 Ram 1500 4.7/545RFE
'12 Challenger SRT8 392/6-speed
'99 XJ 4x4 4.0/AX15, '14 WK2 4x4 3.6/8HP
Re: Draining the FF gear and xfer case oil? [Re: 2015_PSD] #4596115
12/06/17 01:08 PM
12/06/17 01:08 PM
Joined: Sep 2013
Posts: 10,683
Indiana
dlundblad Offline OP
dlundblad  Offline OP
Joined: Sep 2013
Posts: 10,683
Indiana
Originally Posted By: 2015_PSD
Originally Posted By: dlundblad
Is 3000 miles on the vehicle too early to drain the gear and t case oil? The idea is to get the break in metals out.
I waited until 9K on my F-250 and 13K on my F-150 (though I wanted to drain the F-150 at 10K). I would wait until at least 5K to be sure that it is fully broken in or you will be adding more wear metals to the new oil in short order (unless you are going to change it again in the near future). Also, is your T-Case in constant use? If not, there will not be any wear metals to remove.


The transfer case has constant spinning internals.


03 Jeep WJ 4.0 202k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 186k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 153k Synpower 5w30 Supertech ST3980 (Ecore)

Re: Draining the FF gear and xfer case oil? [Re: MolaKule] #4596138
12/06/17 01:34 PM
12/06/17 01:34 PM
Joined: Feb 2015
Posts: 2,361
Slovenia EU
Kamele0N Offline
Kamele0N  Offline
Joined: Feb 2015
Posts: 2,361
Slovenia EU
Originally Posted By: MolaKule
I would use



https://www.motul.com/us/en-US/products/gearbox-80w90


2008 Toyota Yaris 1ND-TV 1.4 D4-D Elf FullTech FE 5w30
1997 Toyota Landcruiser KZJ95 3.0 TD Shell Rimula R6M 10w40
Re: Draining the FF gear and xfer case oil? [Re: dlundblad] #4596405
12/06/17 07:02 PM
12/06/17 07:02 PM
Joined: Sep 2010
Posts: 7,594
Planet Earth
2015_PSD Offline
2015_PSD  Offline
Joined: Sep 2010
Posts: 7,594
Planet Earth
Originally Posted By: dlundblad
Originally Posted By: 2015_PSD
Originally Posted By: dlundblad
Is 3000 miles on the vehicle too early to drain the gear and t case oil? The idea is to get the break in metals out.
I waited until 9K on my F-250 and 13K on my F-150 (though I wanted to drain the F-150 at 10K). I would wait until at least 5K to be sure that it is fully broken in or you will be adding more wear metals to the new oil in short order (unless you are going to change it again in the near future). Also, is your T-Case in constant use? If not, there will not be any wear metals to remove.
The transfer case has constant spinning internals.
So it is AWD?

Re: Draining the FF gear and xfer case oil? [Re: 2015_PSD] #4596480
12/06/17 08:06 PM
12/06/17 08:06 PM
Joined: Sep 2013
Posts: 10,683
Indiana
dlundblad Offline OP
dlundblad  Offline OP
Joined: Sep 2013
Posts: 10,683
Indiana
Originally Posted By: 2015_PSD
Originally Posted By: dlundblad
Originally Posted By: 2015_PSD
Originally Posted By: dlundblad
Is 3000 miles on the vehicle too early to drain the gear and t case oil? The idea is to get the break in metals out.
I waited until 9K on my F-250 and 13K on my F-150 (though I wanted to drain the F-150 at 10K). I would wait until at least 5K to be sure that it is fully broken in or you will be adding more wear metals to the new oil in short order (unless you are going to change it again in the near future). Also, is your T-Case in constant use? If not, there will not be any wear metals to remove.
The transfer case has constant spinning internals.
So it is AWD?


No. It's selectable like a np231 as I mentioned in my OP.

It's chain driven, which is moving regardless.


03 Jeep WJ 4.0 202k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 186k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 153k Synpower 5w30 Supertech ST3980 (Ecore)

Re: Draining the FF gear and xfer case oil? [Re: dlundblad] #4596803
12/07/17 07:00 AM
12/07/17 07:00 AM
Joined: Nov 2017
Posts: 282
California
CleverUserName Offline
CleverUserName  Offline
Joined: Nov 2017
Posts: 282
California
Delvac synthetic gear oil. They have 75w90 and 80w140 available in GL5. The Porsche guys love this stuff for racing. You can get it at truck service centers, online and any mobil distributor should have it.

https://www.mobil.com/english-us/commerc...il-75w90-80w140


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