# 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.

- Type: Service bulletin
- NHTSA id: 10247598
- Published by NHTSA: 2023\-12\-22
- Manufacturer's number: 23\-EM\-008H
- Manufacturer's date: 2023\-12\-11
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

This Dealer Best Practice covers updated Engine Oil Consumption Inspection and Repair Guidelines for all Hyundai models and model year vehicles equipped with gasoline engines. TSB 23\-EM\-008H \(or latest version\) 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 driving habits and mileage. Hyundai recommends regular oil changes according to factory maintenance schedules and checking engine oil levels periodically using the dipstick. This Dealer Best Practice also covers Combustion Chamber Cleaning, a service procedure which may be required on certain vehicles based on the conditions outlined TSB 23\-EM\-008H \(or latest version\), and for which is remedied using the service procedure for Combustion Chamber Cleaning as outlined in TSB 23\-EM\-007H \(or latest version\).

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10247598-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10247598-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine

## Vehicles listed

- HYUNDAI HYUNDAI

JSON: [/v1/bulletins/10247598](/v1/bulletins/10247598)

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