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Service bulletin 23-EM-008H

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 id10247597
Published by NHTSA2023-12-22
Manufacturer's number23-EM-008H
Manufacturer's date2023-12-11
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

This bulletin provides the inspection procedure to diagnose and repair vehicles with concerns of engine oil consumption, including methods to resolve symptoms caused by carbon deposits within the engine. All internal combustion engines consume engine oil as normal part of the operation during the combustion process, depending on driving conditions and habits and mileage. Hyundai recommends regular oil changes according to factory maintenance schedules and checking engine oil levels periodically using the dipstick.

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

Vehicles listed
HYUNDAI HYUNDAI

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