Differential housing is leaking

[GB John]

I've got a 2015 Mustang GT Premium 6M and a 3:31:1 rear end ratio. It has seen only normal use for 52,000 miles. I noticed this morning that my differential housing is leaking near the passenger side half shaft. How tough is it to replace the seal? Should I bother? It's not dripping on the floor. No bad noises. What you see in the picture is the only evidence of a problem.

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[NoVaGT]

Youtube is your friend.

I'd replace the seal, or have it replaced. Don't want to let that go. Plus, it would be good to put some high-end synthetic gear oil in too.

 

[GB John]

This was actually the less irritating of the two videos I found on youtube. Thanks.

 

[NoVaGT]

This was actually the less irritating of the two videos I found on youtube. Thanks.

Thank the gear-head gods for youtube......anything you need to figure out is there.

 

[tom_sprecher]

Being from the South I'm just not used to seeing rust under a car. After 50k miles the bottom of my car looks the same as the day I bought except for a little more dust.

Same for the F250 with 240k except for a little diesel fuel stains from a fuel pressure regulator that started to leak.

 

[Elp_jc]

I'd at least clean it, check fluid level (to see how low it is), and change it. Then monitor the leak. Good luck.

 

[atomicpunk]

I wouldn't worry about that until it starts dripping on the ground and you probably have quite a long time till it does.

 

[Ecoboosted]

I would at the very minimum check the level and top it off if it’s low.

 

[Cobra Jet]

I’ve seen brand new rear diffs with “seepage” as such, jus damp on the housing, nothing on floor.

To test how bad the seepage is, get carb cleaner, liberally spray down the housing, use a microfiber to wipe, then spray again. Go for a long drive, park the car, let it sit overnight and check it again... Determine from that point the severity of the seepage.

 

[GB John]

Before messing with it myself, I looked at the service contract I bought with the car 5 years ago. Sure enough, it covers seals and gaskets. I've got an appointment Friday to have the Ford dealer fix it. Maybe they'll replace the recalled door latches too.

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