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Service bulletin 98-015

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 id10186757
Published by NHTSA2021-02-05
Manufacturer's number98-015
Manufacturer's date2021-01-20
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

Information Only – PACCAR MX-13 and MX-11 Cylinder Head Leak Decay kits are now available. Procedures are available in RMI and supporting SRTs are published.

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-112013 to 2020
PACCAR MX-132011 to 2021

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