Quote:
Originally Posted by Bmwfvr
I did clean the old oil very well. Everything looked nice and dry. I also changed oil so the oil on the diff looks new oil (golden color). Would an oil pan gasket leak collect at the bottom of the front diff?
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It could. Oil tends to run down things and collect at a low point. I would double check the VC gaskets by wiping along the edge with a clean paper towel to look for leaks.
I just did an engine swap and redid all of the gaskets on my 4.8i so it is somewhat fresh in my mind...
Is it definitely engine oil or could it be power steering fluid? Genuine CH11s is green when new but Febi and some others is not very green and the green seems to fade over time. Power steering leaks can come from the lines or potentially from the rack (although that was more of an issue on my e46s).
If you changed the diff oil then the process is to add it until it overflows much like the transmission so it could be just spill over that is just running downward.
Do you have any other spots or oil run lines on the belly pan?
If everything is clean and dry then you should be able to track it down (not that there is any room to see anything in a 4.8i e70).
-Rich