Land Rover Repair: differential oil from left rear fender liner LR2

Question
QUESTION: 2008 LR2....I found 90 wt oil dripping from the left rear fender liner.  Could this be from a vent tube?

ANSWER: Yes it could be from the axle vent.  It could also be melted grease from a hub bearing failure.  Let us know what you find

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QUESTION: Thanks for your prompt response.. I was worried.  After your answer I found two vent lines routed to the left rear fender liner area.  One from the Haldex and one from the differential.  It seems like the differential 90 weight oil is being pushed over through the vent tube into the fender.
The pinion bearing, crush ring and seal were replaced 3 months ago so I will ask the dealer who did the work if the leak is related.  Thanks for your help so I knew where to look.  I knew it was not the axle or wheel bearing because the tire and wheel are dry.  Only the fender was oily.  I will let you know what the dealer says.
What do you think would cause the 90 wt to push over months after a service?

Answer
The usual reason for differential oil coming out the vent is water intrusion raising the fluid level, or the system being overfilled and then getting hot.  The more common problem is when the vent plugs up with dirt, and pressure builds in the axle, causing leaks at the axle seals.