{"nhtsa_id":10235841,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-05-08","date":"2014-05-27","document_id":"0214513R","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"surface treatment change to oil control piston rings","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10235841-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10235841-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10235841","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"SUBARU","model":"IMPREZA","year_from":2012,"year_to":2013,"match":"exact","vehicle_ids":["2012_subaru_impreza","2013_subaru_impreza"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}