Well after changing out turbo today, I “think” I have an exhaust leak, but can’t see any obvious cracks in manifold. Just black soot on rocker cover heat shield. So might have to look into the cast iron manifold soon. Turbo to manifold bolts were 12mm 12 point socket. I think the manifold nuts to block were 10mm, but may have been 11mm.. I did check for you, but promptly forgot. :p It will be interesting to see how removing manifold through the top goes. With turbo removed it would be pretty easy to get manifold out the bottom I think. (But I f**cken hate that lower alloy engine plate removal!) I did also ponder whether it would be smart to chop the air filter part of rocker cover off, could make up a plate n silicone to connect it back up after jobs done.. stupid engine design that!

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2004 X5 3.0d
2010 X5 40d

New Zealand