Crankcase ventilation oil leaks and intake carbon
M178Oil leaks around the cam covers and sump, or rough cold running.
The AMG GT's version of the same 4.0 V8. Failed PCV oil separators drive the oil leaks; direct injection means carbon accumulates on the intake valves. Cylinder head failure does happen but is rare and is almost always the result of a serious overheat rather than a design fault.
Parts this needs
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