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Service bulletin E263

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 id10176038
Published by NHTSA2020-06-02
Manufacturer's numberE263
Manufacturer's date2020-05-07
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

Non-Safety Campaign: Exhaust valve guide seals in PACCAR MX-13, EMY 2017-2018 engines could leak oil into the combustion chamber.

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
PACCAR MX-13

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