Jeep Wrangler Forum - Reply to Topic
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ Tech Forum > 94 Wrangler AX 15 transmission oil change, which oil to use?

Join Wrangler Forum Today

Thread: 94 Wrangler AX 15 transmission oil change, which oil to use? Reply to Thread
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:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:


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)
05-18-2013 03:13 PM
Originally Posted by Dac7529 View Post
Definitely 10w30 75/90 is no longer recommended
This isn't totally true. Back when the old GL5 rating and synchro eating fluid was on the market Chrysler recommended a change to 10W30 motor oil. Any of the "modern" 75W90 gear oils, full syn is better, or 10W30 motor oil, full syn is better, can be used.
05-18-2013 01:07 PM
Garyk This has been beat to death on this forum, some use motoroil, some use full syn....what everybody agrees on is DO NOT use any fluids that are corrosive to yellow will eat the syncros.....
05-18-2013 04:59 AM
Dac7529 Definitely 10w30 75/90 is no longer recommended
05-17-2013 02:00 PM
YJ fanatic I'm running full synthetic 10w30 and it's smooth as butter. Way better than it was, but I'm not sure what was in there before.
05-17-2013 01:14 PM
kik 75W90 full syn gear oil or 10W30 full syn motor oil. Your choice.
05-17-2013 12:05 PM
c5wagner I use Syncromesh
Synchromesh manual transmission fluid

But 10w-30 full synthetic is fine as well. It has to be synthetic though, and regular won't work. Though syncromesh is my favorite fluid so far.
05-17-2013 11:54 AM
94 Wrangler AX 15 transmission oil change, which oil to use?

Hi All
I have a 94 wrangler 4l limited with an AX 15 transmission, now, I have to change the oil as it is beginning to refuse to change gear sometimes. My question is what type of oil can i use, the owners manual says GL5 75w-90
very expensive in the U.k. On looking on the forums many people say not to use GL5 oil, and some say the manufacturer now recomends 10w-30 synthetic engine oil, a lot cheaper. I need some clarification please help.
cold wet England.

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 10:57 AM.

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