{"nhtsa_id":10188221,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-03-05","date":"2021-02-23","document_id":"TechTalk8157K","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"Tech Talk continuing discussion on if HAS ANYONE ELSE SEEN HEAD GASKETS LEAKING.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10188221-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10188221-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10188221","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"WESTERN STAR","model":"5700","year_from":2018,"year_to":2018,"match":"exact","vehicle_ids":["2018_western-star_5700"]}],"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":[]}