{"nhtsa_id":11037031,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-09-04","date":"2026-08-20","document_id":"TSB260095","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"This Technical Service Bulletin describes the verification and resolution steps for the recommended oil grade specification for certain X15N engines which may result in customer usage of 10W 30 oils at high ambient temperatures, resulting in increased oil consumption and instances of fault code FC1856 being set.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11037031-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11037031-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11037031","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"X15N","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]}],"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":[]}