I dont think the m104 3.6AMG has any of the issues mentioned above. I drive my AMG daily giving its engine a beating every chance i get, i ever have semi-slicks Toyo R888 on it now, and i ripp up my favorite mountain highway (the one in my utube vid) and oil consumption is just like its manual says it should be.
I also have oil temp gauges for both the engine and the gearbox, and even after such flatout runs temps are always in check. The engine oil has never crossed 95C' and the gearbox even at such abuse maxes at 100C'.

i think its a really good engine.

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Jay,
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-1995 Blue W202 C36 AMG (M) SOLD ;(
-1995 Black W140 S500 (Lady)
-1992 Black W124 E300 (Dima) (Ex-Mosselman
Twin turbo Kit).
-1988 Black W124 300 E 4-Matic.(Nadeen)
-1983 Brown W126 500SEL.(Old Lady)(Sold)
-1981 Gold W123 280CE.(Dareen)(Sold)
http://www.youtube.com/user/jayrasheed