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Service bulletin 308-15

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10141948
Published by NHTSA2018-06-18
Manufacturer's number308-15
Manufacturer's date2015-03-08
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:OTHER FUEL TYPES:TURBO/SUPERCHARGER; ENGINE

NHTSA's summary

308-15 Symptom Diagnostics - Oil Present at the Turbocharger Compressor

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine, Turbocharger or supercharger

Vehicles listed
FREIGHTLINER 114SD2012, 2013, 2014, 2015, 2016, 2017
FREIGHTLINER 122SD2012 to 2017
FREIGHTLINER BUSINESS CLASS M22012 to 2017
FREIGHTLINER CASCADIA2012, 2013, 2014, 2015, 2016, 2017
FREIGHTLINER COLUMBIA2012, 2013, 2014, 2015, 2016, 2017
FREIGHTLINER CORONADO2012, 2013, 2014, 2015, 2016, 2017
STERLING A-LINE2012 to 2017
WESTERN STAR 47002012, 2013, 2014, 2015, 2016, 2017
WESTERN STAR 49002012, 2013, 2014, 2015, 2016, 2017

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
18SP7342018-12-10. Service bulletin. 18SP734 18SP734?GHG14 DD15AT Turbocharger
18SP7342018-10-29. Service bulletin. 18SP734 18SP734?GHG14 DD15AT Turbocharger
305-132018-06-11. Service bulletin. 305-13 GHG14 DD15 Asymmetrical Turbocharger Flanged Exhaust Manifold
0140-172018-04-16. Service bulletin. 0140-17 Turbocharger Compressor Outlet Pipe
0136-172018-04-16. Service bulletin. 0136-17 GHG17 DD5 Medium Duty - Exhaust and EGR - Turbocharger Oil
0126-172018-04-16. Service bulletin. 0126-17 SPN 520295 (MCM) (GHG17) - Smart Remote Actuator 1
0504-162018-03-13. Service bulletin. Inspection of the DD13 Turbocharger
308-152018-03-05. Service bulletin. 308-15 Symptom Diagnostics - Oil Present at the Turbocharger Compressor