Anyone ever done this? I have done a search and get plenty of threads on removing and reinstalling a rebuilt one, but never anything about using the seal kit sold on FastLane.

PO flushed with trans fluid per the manual, but apparently trans fluid has become much more agressive in the last 21 years and it ate the lines and seals in the gearbox. The lines have been replaced, but the gearbox still seeps.

I'm sure someone has done this before...?

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08 W251 R350
97 W210 E320
91 W124 300E
86 W126 560SEL
85 W126 380SE Silver
85 W126 380SE Cranberry
79 W123 250
78 W123 280E
75 W114 280