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Service bulletin P-1650

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 id10025852
Published by NHTSA2008-09-10
Manufacturer's numberP-1650
Manufacturer's date2008-07-31
NHTSA componentENGINE AND ENGINE COOLING:COOLING SYSTEM

NHTSA's summary

MACK: MODEL MRU WITH MANUAL TRANSMISSION. COOLING SYSTEM SURGE TANK REPLACEMENT. *PE

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
MACK MRU2007

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