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2014 Silverado differential and transfer-case oil #4559065
10/30/17 08:39 AM
10/30/17 08:39 AM
Joined: Sep 2009
Posts: 6
Charleston,SC
GMcDougal Offline OP
GMcDougal  Offline OP
Joined: Sep 2009
Posts: 6
Charleston,SC
What are some good fluids for both my differentials and front transfer case? I plan on going 75w90 in both Transfer cases unless everyone insist I stick with 75w85. I also don’t really want to spend $20 a quart. Thanks

Re: 2014 Silverado differential and transfer-case oil [Re: GMcDougal] #4559073
10/30/17 08:47 AM
10/30/17 08:47 AM
Joined: Sep 2015
Posts: 2,256
Malaysia
zeng Offline
zeng  Offline
Joined: Sep 2015
Posts: 2,256
Malaysia
Yep, go a grade or two thicker than OEM recommendation, and the diff/Xcase bearings and gears would love it.
Other than price and availability,for stronger components protection pick one with a higher [email protected]*C first and foremost and, if it's possible, a higher [email protected]*C within similar grades .

Re: 2014 Silverado differential and transfer-case oil [Re: GMcDougal] #4559086
10/30/17 09:00 AM
10/30/17 09:00 AM
Joined: Apr 2017
Posts: 15
Florida
bbartow Offline
bbartow  Offline
Joined: Apr 2017
Posts: 15
Florida
xcase is dexron vi

Re: 2014 Silverado differential and transfer-case oil [Re: GMcDougal] #4559098
10/30/17 09:20 AM
10/30/17 09:20 AM
Joined: Sep 2009
Posts: 6
Charleston,SC
GMcDougal Offline OP
GMcDougal  Offline OP
Joined: Sep 2009
Posts: 6
Charleston,SC
What about this stuff in both differentials? My rear end is a G80 locker. I want to make sure i avoid chatter.

https://www.amazon.com/gp/aw/d/B000CPCBF...&ref=plSrch

https://www.amazon.com/gp/aw/d/B000ONZXP...&ref=plSrch

Will either of these work? Is one better than the other?

Last edited by GMcDougal; 10/30/17 09:30 AM.
Re: 2014 Silverado differential and transfer-case oil [Re: GMcDougal] #4559119
10/30/17 09:43 AM
10/30/17 09:43 AM
Joined: Jan 2008
Posts: 3,972
Guilford, CT
exranger06 Offline
exranger06  Offline
Joined: Jan 2008
Posts: 3,972
Guilford, CT
Originally Posted By: GMcDougal
What are some good fluids for both my differentials and front transfer case? I plan on going 75w90 in both Transfer cases unless everyone insist I stick with 75w85. I also don’t really want to spend $20 a quart. Thanks

"Front transfer case?" "Both transfer cases?" Your truck has only one transfer case, and it's not a "front" transfer case. You need to get your terminology right so we can be sure we're talking about the same components. Otherwise you're going to put the wrong fluid in and screw something up.


2006 Ford Ranger Sport
1992 Honda Accord EX
2004 Honda CR-V LX
1994 Ford Bronco XLT (project)
2011 Cadillac Escalade ESV (wife's)
Re: 2014 Silverado differential and transfer-case oil [Re: exranger06] #4559166
10/30/17 10:19 AM
10/30/17 10:19 AM
Joined: Sep 2009
Posts: 6
Charleston,SC
GMcDougal Offline OP
GMcDougal  Offline OP
Joined: Sep 2009
Posts: 6
Charleston,SC
Originally Posted By: exranger06
Originally Posted By: GMcDougal
What are some good fluids for both my differentials and front transfer case? I plan on going 75w90 in both Transfer cases unless everyone insist I stick with 75w85. I also don’t really want to spend $20 a quart. Thanks

"Front transfer case?" "Both transfer cases?" Your truck has only one transfer case, and it's not a "front" transfer case. You need to get your terminology right so we can be sure we're talking about the same components. Otherwise you're going to put the wrong fluid in and screw something up.


Yes, my apologies. Front transfer case (4x4), front differential and rear differential. I realize the front and rear differentials get 75w90 gear oil and the transfer case gets dexron vi. I am trying to figure out which is best for the money. Thanks!”

Last edited by GMcDougal; 10/30/17 10:21 AM.
Re: 2014 Silverado differential and transfer-case oil [Re: GMcDougal] #4559308
10/30/17 01:47 PM
10/30/17 01:47 PM
Joined: Dec 2002
Posts: 1,565
North Carolina
Rat407 Offline
Rat407  Offline
Joined: Dec 2002
Posts: 1,565
North Carolina
I would say the best bet would be to go get Mobil 1 75w-90 gear oil at one of the auto parts store near you and pick up any dexron vi fluid and you would be good to go.

I use AMSOIL's Severe gear and keep it in 100k. Pulled a sample and it came back fine. I could have left it in longer and I do some mile hauling and towing with my 2002 Silverado. Just an FYI.


2002 Silverado 5.3 0w-20 AMSOIL®
Re: 2014 Silverado differential and transfer-case oil [Re: GMcDougal] #4559313
10/30/17 02:05 PM
10/30/17 02:05 PM
Joined: Dec 2013
Posts: 2,087
socal
barkingspider Offline
barkingspider  Offline
Joined: Dec 2013
Posts: 2,087
socal
For the front & rear differential, use the brand u like best in 75w90. I have experience w valvoline, Mobil 1, supertech, Delo, RP, autozone / oreillys and although I don’t know if one is better than the others, they all worked good in my past and present GM trucks. Xcase use only Dex VI, again chose the brand you like best


06 Cadillac Escalade Ext
17 Cadillac ATS (wife)
05 Toyota Camry (daughter)
11 GMC Canyon off-road (daily)
Re: 2014 Silverado differential and transfer-case oil [Re: barkingspider] #4559343
10/30/17 02:45 PM
10/30/17 02:45 PM
Joined: Sep 2010
Posts: 6,986
Texas
4WD Offline
4WD  Offline
Joined: Sep 2010
Posts: 6,986
Texas
Ran Mobil 1 gear oil in GM’s for 20 years … walk in and grab at Autozone … always came back out clean after 30k~50k … Dex VI take your pick … pretty tightly controlled products …

Re: 2014 Silverado differential and transfer-case oil [Re: zeng] #4559362
10/30/17 03:05 PM
10/30/17 03:05 PM
Joined: Oct 2014
Posts: 3,889
Utah
CKN Offline
CKN  Offline
Joined: Oct 2014
Posts: 3,889
Utah
Originally Posted By: zeng
Yep, go a grade or two thicker than OEM recommendation, and the diff/Xcase bearings and gears would love it.
Other than price and availability,for stronger components protection pick one with a higher [email protected]*C first and foremost and, if it's possible, a higher [email protected]*C within similar grades .



So spec the non-recommended fluid in a truck that MAY BE under warranty?

Re: 2014 Silverado differential and transfer-case oil [Re: CKN] #4559367
10/30/17 03:09 PM
10/30/17 03:09 PM
Joined: Sep 2010
Posts: 6,986
Texas
4WD Offline
4WD  Offline
Joined: Sep 2010
Posts: 6,986
Texas
Reckon the spec comes from AAM … core business/focus …

Re: 2014 Silverado differential and transfer-case oil [Re: GMcDougal] #4561310
11/01/17 02:46 PM
11/01/17 02:46 PM
Joined: Nov 2013
Posts: 358
Fly-over country
zuluplus30 Offline
zuluplus30  Offline
Joined: Nov 2013
Posts: 358
Fly-over country
Any J2360 75w-90 will do the trick. I used 75W90 in my wife's 2014. Didn't think twice. It also makes it easier. 5 quarts will get you front and rear filled. Only Dex VI for the transfer case. GM went to a larger ring gear in the 2014 1500s so they could drop the viscosity. They were trying to eek out any MPG they could find. Diffs don't care about thicker oil within reason.


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