Ford Aerostar 1990–1997 — technical service bulletin
Bulletin 98233 · NHTSA communication 603717 · issued Nov 23, 1998
Technical service bulletin
communication type
Power Train
component
1990–1997
model years
8
vehicle entries
Official summary
Concerns with front drive axle fluid may leak out of the vent under some driving modes on some vehicles. *yc
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.