Subaru Impreza 2012–2013 — technical service bulletin
Bulletin SB-02-145-13R · NHTSA communication 10054210 · issued Oct 10, 2013
Technical service bulletin
communication type
Engine
component
2012–2013
model years
3
vehicle entries
Official summary
Subaru: information regarding surface treatment to oil control piston rings due to limited unanticipated wear of rings and higher oil consumption and consistent if wear occurs. Model 2012-2013 impreza, crosstrek. *pe
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.