Yes, vacuum pump is the likely culprit here. I'd just buy a new seal for it (~$25). Keep a close eye on your oil level in the meantime - these engines don't like running low.

 

Thank You for helping Lotusespritse & Davetibbs that was fast
Is this the part number C2D3771 or AJ812615 or AJ812201

vacuum pump seal

 

How often do you change your oil? It looks like mud coming out of there. When mine was leaking, it just looked like oil.

 

Do yourself a favor and clean your engine BEFORE you start any work fixing it. You could always run a oil UV dye test on it to verify the leak location.

 

Thanks right now my XFR is oversees it's 6 hours from Dubai it's a dusty rode . I am still at MD 21204 i's almost raining every day but not there it's almost raining dust like AZ & Nevada I will be leaving the country within 1 month from now I have my brother is taking the photos for me.
I change every 4000 miles Full Synthetic 5W-20 Castrol edge.

 

I will do it thanks