FORD 2011 E-450 v.2 - Manual (Page 288)

If an overfill occurs, excess fluid should be removed by an authorized
dealer.
An overfill condition of transmission fluid may cause shift and/or
engagement concerns and/or possible damage.
Do not use supplemental transmission fluid additives, treatments or
cleaning agents. The use of these materials may affect transmission
operation and result in damage to internal transmission components.
DON'T ADD IF IN CROSSHATCHED AREA • CHECK WHEN HOT IDLING IN PARK
ADD COLD HOT DO NOT ADD
Maintenance and Specifications
288
2011 Econoline (eco)
Owners Guide, 2nd Printing
USA (fus)