Jeep Wrangler Forum - Reply to Topic
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ Tech Forum > Gearbox and Diff. oil question...

Join Wrangler Forum Today


Thread: Gearbox and Diff. oil question... Reply to Thread
Title:
  
Message:
Post Icons
You may choose an icon for your message from the following list:
 

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Additional Options
Miscellaneous Options

Topic Review (Newest First)
12-30-2010 02:03 PM
falatude I called 2 separate Jeep dealerships in my area, BOTH said 75w90 ONLY! They could find no TSB's stating anything different. All the current manuals in their shops say 75w90 GL-5. Now this was for my 92 YJ, a newer AX-5 might be different. I am not sure. But, with 155k miles on my trans and no issues, I think I will stick with what works.
12-30-2010 12:07 PM
JeepAddOns-Chris Call your local dealer. They'll cross reference what is supposed to go in with their updates and let you know it's ok to use. Or google "10W30 AX-15". Tons of info out there on it.

I use regular dino oil 10W30 in my AX-15 and it is smooth as butter compared to the old gear oil I used to use.
12-30-2010 11:57 AM
Garyk
Quote:
Originally Posted by falatude View Post
I am going to keep digging on this one. I searched every TSB ever issued for my 92 YJ with the AX-5 trans and came up with NOTHING related to the oil used in the tranny
Once I have my spare tranny sitting in the garage I will be more willing to experiment

Automotive Recalls and Technical Service Bulletins for 1992 Jeep Truck Wrangler L4-150 2.5L VIN P MFI. Provided by ALLDATA
I couldn't find any TSBs either....I also looked over the container of Royal Purple, it states that it is non-corrosive
12-29-2010 05:47 PM
falatude Ok, found this on "Bob Is The Oil Guy" web site. Site is dedicated to oil analysis.

"Hi Joe,

I love 5-speeds, but frankly the one used in pre-2000 Cherokees isn't all that great (Aisin AX-15). It is better than the AX-5 and a Pugeot that Jeep used in the 80s, though. My main gripe with it is that they changed the synchros in about 1996 so that it REQUIRES GL-3 oil, just as GL-3 oil was becoming unobtainium. It also needs a 90-wt oil, so you can't use ATF. I tried Redline MT-90 (GL-4, about the safest gear oil I could find) and within a few months started getting blocked shifts to first gear and other synchro quirks. I went to a Chrysler dealer service department and basically said, "Ok, smart guys, what do YOU use in one of these when it comes in for service?" They pulled their supercede list and TSBs and showed me a paper trail where Chrysler engineers recommend 10w40 synthetic engine oil for the AX-15. So I tried that, and darned if it isn't working well again."
12-29-2010 05:35 PM
falatude
Quote:
Originally Posted by Garyk View Post
Did some research on the internet and came up with part#4761839AC(new part number) I then called the local Jeep dealer and asked them to search the number. Its a number for transmission oil and its 10w-30 for jeep transmissions..

Guess the royal purple is coming out this week and synthetic 10w-30 is going in...
I am going to keep digging on this one. I searched every TSB ever issued for my 92 YJ with the AX-5 trans and came up with NOTHING related to the oil used in the tranny
Once I have my spare tranny sitting in the garage I will be more willing to experiment

http://www.alldatadiy.com/TSB/04/920406d8.html
12-29-2010 05:19 PM
Garyk Also read that some of the gear oils have too much sulphur in them because of gear shear and its bad for brass....
12-29-2010 05:17 PM
Garyk Did some research on the internet and came up with part#4761839AC(new part number) I then called the local Jeep dealer and asked them to search the number. Its a number for transmission oil and its 10w-30 for jeep transmissions..

Guess the royal purple is coming out this week and synthetic 10w-30 is going in...
12-29-2010 04:45 PM
falatude
Quote:
Originally Posted by JeepAddOns-Chris View Post
Add a few cans of brake cleaner and a tube of RTV sealant to your shopping list as well if you're doing the diffs. Any 80W-90 weight gear oil should do unless you have a limited slip. I'm pretty sure both the D30 and D35 both use about 1.5 quarts.

For the transfer case, use ATF and for the AX-15 or AX-5, use 10W30 motor oil.
I read somewhere else as well to use 10w30 instead of the 80x90, Hmmm
Seems a bit shaky to me
12-29-2010 04:29 PM
Garyk TSB for 10w30? I can't imagine what they were thinking.....engine oil simply does not have the shear properties that synthetic gear oil or regular gear oil does.
12-29-2010 03:09 PM
jgwalt
Quote:
No no no, do *not* put 80W90 in your transfer case. Maybe he meant to use that stuff in your transmission, but Chrysler issued a TSB update to use 10W30 oil in your manual transmission.
I run 75-90 in both diffs and transmission. ATF +4 in the transfer case. Is there something I'm missing...?
12-29-2010 03:04 PM
GrNMoNsTr--93YJ I've got an automatic tranny but it has the manual gear shifter on the floor for the 4 wheel drive. Auto tranny shifter is on the column. Where would I put the gear oil in for the manual 4wd shifter? He showed me a bolt underneath which is pretty much centered on the underbody of the jeep.
12-29-2010 02:58 PM
JeepAddOns-Chris No no no, do *not* put 80W90 in your transfer case. Maybe he meant to use that stuff in your transmission, but Chrysler issued a TSB update to use 10W30 oil in your manual transmission.

NP231 = ATF
AX-15/AX-5 = 10W30 Oil
12-29-2010 02:52 PM
jgwalt
Quote:
I use the purple stuff in the trans, 75/90 GL5...works great and in the transfer I use synthetic trans oil.....make sure you use one for Chrysler products
agreed. max gear is dope. The synthetic ATF is the +4, I believe.
12-29-2010 02:33 PM
GrNMoNsTr--93YJ I've also got this same question. I was told when I got the Jeep to use 80w90 gear oil for the 4x4 t case to make it stay in gear and not slip out. But when I asked on here a while ago I got everything from ATF to Synthetic lube. The guy I got it from showed me a nut to remove right in the center of the Jeep and then told me to put the gear oil but I don't want to put that in if I would be better off putting a different fluid in and if there is an easier way to pump it in since the bolt is off the side of the case. Thanks guys. If you need I'll post a pic where he told me to put the gear oil in at and show the bottle of G.O. he gave me to put in it.
12-29-2010 09:56 AM
LaterJim +1 on royal purple...I use Redline MT90 in the tranny...good stuff, but shifts pretty stiff in the cold weather until warm
12-28-2010 09:40 PM
Mike_3303
Quote:
Originally Posted by Garyk View Post
I use the purple stuff in the trans, 75/90 GL5...works great and in the transfer I use synthetic trans oil.....make sure you use one for Chrysler products

purple stuff? are you talking about royal purple? if so good job lol i used that in the trans, transfercase, front and rear axle. kinda pricy but good.
12-28-2010 09:28 PM
Garyk I use the purple stuff in the trans, 75/90 GL5...works great and in the transfer I use synthetic trans oil.....make sure you use one for Chrysler products
12-28-2010 04:39 PM
JeepAddOns-Chris Add a few cans of brake cleaner and a tube of RTV sealant to your shopping list as well if you're doing the diffs. Any 80W-90 weight gear oil should do unless you have a limited slip. I'm pretty sure both the D30 and D35 both use about 1.5 quarts.

For the transfer case, use ATF and for the AX-15 or AX-5, use 10W30 motor oil.
12-28-2010 03:15 PM
Mike_3303 See if this helps, what oil you going to use?

Jeep NV3550 Transmission & NP231 Transfer Case Service
12-28-2010 03:12 PM
Chadtonio
Gearbox and Diff. oil question...

I was at Jiffy lube the other day for an oil change cause I was lazy and in a rush and asked them how much to change the gearbox oil they quoted me $100! So I am going to be doing that myself! Just curious how much I need for both that and the diff...Might as well do that while I am making a mess...Thanks!

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT -5. The time now is 12:09 PM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC