Axle overflow
#1
Legacy TMS Member
![](https://themustangsource.com/forums/images/rank.gif)
![](https://themustangsource.com/forums/images/rank.gif)
![](https://themustangsource.com/forums/images/rank.gif)
Thread Starter
Axle overflow
The last two days I've been smelling differential oil while driving home with the windows down. I looked under the car and saw heavy seepage on my diff cover. I figured "great...now I have to rip the **** thing off and reseal it" but when I got under the car to wipe it down, to my surprise it wasn't the diff cover because the whole passenger side of the axle was coated in a heavy layer of the stuff. It looks like the axle overflow valve up-chucked (technical term) for some reason. Does anyone know why it would do this? I haven't changed the fluid on my diff for about 15,000 miles so if it were overfilled, you'd think it would have overflowed sooner.
My only guess is that last week I went on a road trip, got pissed at traffic and hit 100+ MPH (probably 120 peak) and took a couple fun curves at speed. Maybe it churned up the oil
My only guess is that last week I went on a road trip, got pissed at traffic and hit 100+ MPH (probably 120 peak) and took a couple fun curves at speed. Maybe it churned up the oil
![Dunno](https://themustangsource.com/forums/images/smilies/dunno.gif)
#3
Bullitt Member
![](https://themustangsource.com/forums/images/rank.gif)
Join Date: May 3, 2010
Location: So Cal
Posts: 430
Likes: 0
Received 0 Likes
on
0 Posts
#4
GT Member
![](https://themustangsource.com/forums/images/rank.gif)
Join Date: January 11, 2007
Location: Northern VA, USA
Posts: 144
Likes: 0
Received 0 Likes
on
0 Posts
Even easier fix: Ford has a TSB (10-3-7) that replaces the diff vent with an improved version that addresses this problem.
Thread
Thread Starter
Forum
Replies
Last Post
Rando
2010-2014 Mustang
8
8/25/21 11:12 AM
unnoticedtrails
Repair and Service Help
30
7/17/17 11:10 AM
tj@steeda
2015 - 2023 MUSTANG
0
9/24/15 08:15 PM
tj@steeda
2015 - 2023 MUSTANG
0
9/10/15 12:44 PM