New Flyer XDE35 2022–2026 — technical service bulletin
Bulletin ITS61815 · NHTSA communication 11037439 · issued Sep 21, 2026
Technical service bulletin
communication type
Fuel/propulsion System
component
2022–2026
model years
7
vehicle entries
Official summary
Instructions to remove and replace the transmission dipstick with updated dipstick markings to reduce oil quantity and mitigate oil expulsion through the breather.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.