Subaru Forester 2011–2015 — technical service bulletin
Bulletin 0215714R · NHTSA communication 10235843 · issued Jan 15, 2016
Technical service bulletin
communication type
Engine and Engine Cooling
component
2011–2015
model years
10
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.