Subaru Impreza 2012–2013 — technical service bulletin
Bulletin 0214513R · NHTSA communication 10233438 · issued Mar 20, 2014
Technical service bulletin
communication type
Engine and Engine Cooling
component
2012–2013
model years
2
vehicle entries
Official summary
Surface Treatment Change To Oil Control Piston Rings
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.