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Leaking differential (pumpkin)

Stang 19

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Hoping I am the only one with this odd issue. Went to go check the rear axle fluid level I noticed a small leak on the outside of the cover. 19 mustang gt 6 speed. Ive owned many stangs, none ever had this issue. Anyone else know about where axle leaks is it something to do with the independent rear suspension or just the factory not putting the gasket on correctly ? I have an appointment with Ford to fix whatever needs fixing next week .
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ezracer

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Soooo, what was the problem and was it fixed????
Hoping I am the only one with this odd issue. Went to go check the rear axle fluid level I noticed a small leak on the outside of the cover. 19 mustang gt 6 speed. Ive owned many stangs, none ever had this issue. Anyone else know about where axle leaks is it something to do with the independent rear suspension or just the factory not putting the gasket on correctly ? I have an appointment with Ford to fix whatever needs fixing next week .
 

kent0464

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Hoping I am the only one with this odd issue. Went to go check the rear axle fluid level I noticed a small leak on the outside of the cover. 19 mustang gt 6 speed. Ive owned many stangs, none ever had this issue. Anyone else know about where axle leaks is it something to do with the independent rear suspension or just the factory not putting the gasket on correctly ? I have an appointment with Ford to fix whatever needs fixing next week .
Axle seals or pinion seal is what it is most of the time, Ford slaps them in, hoping the factory applied sealant will hold.....it does not in some cases. The other 2 spots are the drain plug and the diff gasket. All are very easy to fix except the pinion seal it’s a little more involved.
 

AlbertD

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My axle seals were leaking from the factory (albeit more of a sweat than an actual leak). I finally had time this past weekend to drop the rear cradle and swap them out (along with a bunch of other things that needed replacing) and noticed that both axle seals appeared to have been banged in with a hammer. They both had damage to the outer lip which allowed fluid to seep through. Needless to say I am highly disappointed with Ford's quality...
 

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ezracer

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Yep, my right side ( passenger ) axle seal is leaking. My dealer will replace the seal and the bearing next week under the 5/60 warranty. "Hopefully" they won't give me any grief about the car being lowered.

My "un-educated" guess is that because the factory diff bushings are kinda soft that allows for an unreasonable amount of diff movement under acceleration.
I may install the 80 durometer red STEEDA diff bushings in the future.
 
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Stang 19

Stang 19

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Yep, my right side ( passenger ) axle seal is leaking. My dealer will replace the seal and the bearing next week under the 5/60 warranty. "Hopefully" they won't give me any grief about the car being lowered.

My "un-educated" guess is that because the factory diff bushings are kinda soft that allows for an unreasonable amount of diff movement under acceleration.
I may install the 80 durometer red STEEDA diff bushings in the future.
I was concerned the Ford dealer would give me grief because of my blower, but no issue! The tech even complemented my setup :)
 

ezracer

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I'd definitely say your Ford dealer is a...."WINNER"!! I hope mine is also!
I was concerned the Ford dealer would give me grief because of my blower, but no issue! The tech even complemented my setup :)
 

ezracer

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Just had the R.Rear axle seal replaced due to leaking. The FORD tech bulletin also requires the wheel bearing to be replaced also. My dealer allowed the warranty work (5/60) to be done even though I had suspension mods to the car. I'm fortunate to have a "responsible" FORD dealer..............so far. :fistbump:
Yep, my right side ( passenger ) axle seal is leaking. My dealer will replace the seal and the bearing next week under the 5/60 warranty. "Hopefully" they won't give me any grief about the car being lowered.

My "un-educated" guess is that because the factory diff bushings are kinda soft that allows for an unreasonable amount of diff movement under acceleration.
I may install the 80 durometer red STEEDA diff bushings in the future.
 

Keeffa

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I've found a axle seal leaking on my diff, I'm going to change the seal myself. It seems straight forward unbolting everything to remove the half shaft, I'm just wondering if anyone has done this themselves. Does the axle come out of the diff easily. On YouTube they use a pry bar and it clicks out , but is it that simple.
Thanks for any advice you have.
 

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jheissjr

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The bolts that will be removed to remove on the knuckle, lateral arm, link rod, control arm, axle nut, and strut are one time use, torque to yield bolts. Some reuse them, others use new bolts. You know the consequences if something happens and weighing the safety vs. cost is yours. The half shaft comes out easily with a tug after the parts are removed. Rent a seal puller, slide hammer for the puller and seal installer from Autozone. The slide hammer does not damage the housing and is the best of the methods. I think the axle nut is torqued around 100ft lbs. Clean the housing above the seal with a toothbrush before removing the half shaft. Otherwise road grit falls inside and into the open axle bearing.

Things you will need.
- Torque specs of all the bolts.
- New bolts and axle nut if you decide.
- Differential oil if you are changing
- Seal puller
- Seal installer
- Torque wrenches to cover the range of the bolts.
 
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Keeffa

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Thanks for the reply mate. 👍
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