Just wanted to bring this thread back to life lol Our beloved 1M have the leaky coolant problems like most other n54 engines. Plastic connectors they use became brittle and will crack, the plastic connector to the cylinder head thermostat crack and came apart after I found out car was leaking fluid. Now i smell burnt oil and it seems to seep down from somewhere to the exhaust, and found some info that it may be from valve cover gasket.
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