WenmarOpen by Wenmar Pro

Service bulletin 130601

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 id621666
Published by NHTSA2001-09-28
Manufacturer's number130601
Manufacturer's date2001-06-13
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION

NHTSA's summary

THIS BLUE BIRD SERVICE UPDATE IS IN REFERENCE TO ALLISON TRANSMISSION BROCHURE SE 0607EN SYNTHETIC OIL USAGE AND RECOMMENDATIONS. ALLISON APPROVED SYNTHETIC OIL IS REQUIRED IN ALL ALLISON 2000 AND 2400 SERIES TRANSMISSIONS USED IN BLUE BIRD COMMERCIAL UNITS. *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

Transmission and driveline, Automatic transmission

Vehicles listed
BLUE BIRD BLUE BIRD

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