Freightliner Cascadia 2020–2022 — technical service bulletin
Bulletin CALFTL20-006 · NHTSA communication 10253858 · issued Apr 2, 2024
Technical service bulletin
communication type
Engine and Engine Cooling
component
2020–2022
model years
3
vehicle entries
Official summary
Customer Advisory Letter for Proactive Oil Thermostat Replacement
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.