WenmarOpen by Wenmar Pro

Service bulletin 30311

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 id625470
Published by NHTSA2001-11-28
Manufacturer's number30311
Manufacturer's date2001-09-01
Replaces30311
NHTSA componentENGINE AND ENGINE COOLING:COOLING SYSTEM

NHTSA's summary

THE ANTIFREEZE SOLUTION IN THE COOLING SYSTEM MAY DETERIORATE. THIS PROCEDURE HAS BEEN PRODUCED TO ELIMINATE THIS PROBLEM. *TT

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine, Cooling system

Vehicles listed
JAGUAR XJ1998 to 1999
JAGUAR XK1997 to 1999

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