I noticed today some oily spots on the pavement in the rear of the vehicle and trying to pin-point what it is (rear differential?).

I've attached pictures below. Its important to note that I just had the car serviced yesterday for the 120,000 mile service where the rear differential fluid was replaced (along with spark plugs, transfer case fluid etc.). Would think they would bring that to my attention if the fluid was replaced, but leaking? or if its related to the service work that was done.

Thanks, any help is appreciated!

 

I would of thought that they would of used some brake clean after wiping off what they spilled......Little surface rust I also see.

 

looks to me like its possible the shop u went to might not have pushed that seal or plug or whatever it is back in all the way. i would go back to the shop w it and have them look at it.