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Service bulletin 122-M2T3L-09

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 id10148790
Published by NHTSA2018-11-19
Manufacturer's number122-M2T3L-09
Manufacturer's date2018-08-14
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

Subject: Cleaning cooling system. Information: Engine oil in cooling system (coolant warning light comes on).

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
PORSCHE 9111997
PORSCHE BOXSTER1997

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

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No. 04-232023-03-04. Service bulletin. Overview of approved engine C40 oils for all Porsche models that use C40 oil.