Subaru Crosstrek 2017–2018 — technical service bulletin
Bulletin 11-189-19 · NHTSA communication 10154421 · issued Jan 25, 2019
Technical service bulletin
communication type
Engine and Engine Cooling
component
2017–2018
model years
4
vehicle entries
Official summary
This Service Information bulletin announces a change to the required thread sealer used when installing the PCV valve into the engine block. The previously used material may solidify and cause damage to the engine block threads during PCV valve removal.
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.