{"nhtsa_id":620142,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-07-19","date":"2001-01-25","document_id":"2113","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE:GASOLINE","mfr_system":null,"summary":"SOME VEHCLES MAY EXHIBIT OIL WEEPAGE FROM THE REAR OF THE ENGINE CAUSED BY THE FLYWHEEL RETAINING BOLTS. THE THREADED HOLES IN THE REAR FLANGE OF THE CRANKSHAFT ARE DRILLED STRAIGHT THROUGH AND ARE EXPOSED TO OIL INSIDE THE CRANKCASE. NEW RETAINING BOLTS HAVE BEEN INTRODUCED WITH ADDITIONAL THREAD SEALANT. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/620142","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"VOLVO","model":"VOLVO","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":[]}