WenmarOpen by Wenmar Pro

Service bulletin 2636

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 id635320
Published by NHTSA2002-10-21
Manufacturer's number2636
Manufacturer's date2002-05-01
NHTSA componentENGINE AND ENGINE COOLING:COOLING SYSTEM

NHTSA's summary

REPORTS OF COOLANT IN TRANSMISSION FLUID IN VEHICLES WITH SERCK WATER-TO-OIL TRANSMISSION COOLERS. *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
FREIGHTLINER BUSINESS CLASS
FREIGHTLINER CARGO
FREIGHTLINER CENTURY
FREIGHTLINER FLD

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