Do I have a pinion seal leak?

[martinbaca18]

I noticed there a leak above where the drive shaft and the differential connect. But I do not see any oil on the pinion seal or around the u joint. It's just above it. Looks like something is spraying oil up towards the rear seats. I don't know what it is. Any ideas? -2001 Mustang GT

 

[martinbaca18]

It has lowering springs so maybe the pinion angle is causing this leak?

 

[RichV]

Does it actually drip on the ground?

Take a pic if you can.

 

[martinbaca18]

No it doesn't drip to the ground. I'll take a picture when I'm off of work.

 

[martinbaca18]

 

[martinbaca18]

Today there's visible oil on the flange

 

[martinbaca18]

To me it only leaks under load. And it's spraying oil up.

 

[RichV]

Hard to tell. It almost looks like there was a leak. And it was fixed, maybe someone sprayed some pb blaster at the flange bolts to remove them. They look like they were off relatively recently.

 

[martinbaca18]

Yeah but I just got new mufflers and it just burn the fresh oil

 

[martinbaca18]

 

[martinbaca18]

Or at least I think it's oil.

 

[RichV]

Did you have any other fluid leaking and maybe getting slung around the driveshaft or pinion? In the 1st set of pics the seal looks dry at that angle.

 

[Kboss87]

A little bit out oil will make a huge mess due to the pinion spinning. Check the fluid level, top it off, and check it again next time you have it up in the air.