Front differential leak? help please! - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ Tech Forum

Join Wrangler Forum Today

Thread Tools

Please support our sponsors and let them know you heard about them on
Old 04-14-2010, 10:38 AM   #1
TKorona's Avatar
Join Date: Apr 2010
Location: Northern CT
Posts: 97
Front differential leak? help please!

Hey everybody,

I just had my wrangler serviced. New transfer case installed, full brake job, and of course oil change and fluids topped off. Made about a 120 mile highway trip and have come to notice a dark spot a little smaller than a mouse pad right underneath. I drove it a little around town yesterday with no problems, then parked it again. This morning there is another spot. Its not drying clear so I'm afraid its an oil leak. It appears to be right under the front differential. I'm worried now. I read that it might just be too full and it will eventually just get to a comfortable level? Is that true? I will check later to see if there are any bolts with oil around them. Do I need to send this back to the shop?

TKorona is offline   Quote Quick Reply
Old 04-14-2010, 04:35 PM   #2
1kooljeep's Avatar
Join Date: Feb 2010
Location: Green Bay
Posts: 123
Open the fill plug the oil should be right to the bottom of the plug hole. Next try and figure out if the lube is coming from the cover, plug, or pinion. It will probably be a bad seal on the cover. If so drain it, clean off the metal all the way around the opening on the diff and the cover. Get some rtv sealant and run a bead around the cover and put back together.

95 YJ
2.5l, BDS lift, PRP seats, SYE, 8.8, Chromoly TJ shaft conversion in Dana 30, Aussie in rear with 4.88 r&p's, and on board air. VIDEO
1kooljeep is offline   Quote Quick Reply
Old 04-14-2010, 05:47 PM   #3
Schmo's Avatar
Join Date: Jul 2007
Location: SoCal
Posts: 1,586
Originally Posted by TKorona View Post
I read that it might just be too full and it will eventually just get to a comfortable level? Is that true? I will check later to see if there are any bolts with oil around them. Do I need to send this back to the shop?
x2 on pulling the plug to see if it was overfilled first and immediately. Chances are if it was overfilled, by the time it "eventually just gets to a comfortable level" your axle seals will be shot and you'll have a much bigger problem to deal with. Try to find the leak, hopefully it's just a bad seal around the diff cover, if so, I'd take it back to the shop and have them redo it correctly. Do you know if they even pulled the cover? My diffs have a drain plug on the diff housing and most places being lazy, would just pull the plug vs. taking off the cover.
Bite the hand that feeds you . . . you've had more than enough to eat already.
Schmo is offline   Quote Quick Reply

Quick Reply

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.

Thread Tools

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Finally Starting the Front rketr Builders Corner 1 08-09-2009 01:36 AM
Lube Locker on front differential blekaxe JK Tech Forum 0 06-18-2009 08:51 PM
front main seal leak? rocku05 TJ Tech Forum 1 06-07-2009 07:58 PM
xj front axle to tj front axle swap aquaholic TJ Tech Forum 13 06-04-2009 02:14 AM
Leaking Front Diff? DocG2828 TJ Tech Forum 1 06-19-2007 12:39 PM

Download our Mobile App

» Featured Product

All times are GMT -5. The time now is 08:24 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