BMW 328I 2012–2013 — technical service bulletin
Bulletin B111116 · NHTSA communication 10146877 · issued Oct 1, 2016
Technical service bulletin
communication type
Engine and Engine Cooling
component
2012–2013
model years
7
vehicle entries
Official summary
"N20 ENGINE OIL FEED LINE TO THE TURBOCHARGER: LIMITED WARRANTY EXTENSION TO 10 YEARS/120,000 MILES. When starting a cold engine, a ""plume of blue smoke"" can be seen emitting from the exhaust tailpipe for approximately 10-20 seconds. There is no engine malfunction light illuminated (no"" turbocharger boost faults are stored) and no drivability issues are detected. When the vehicle is parked overnight the engine oil pressure will equalize, this may cause engine oil to leak past the turbocharger ""exhaust side"" turbine seal."
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.