Ford 2010 E-150 Owner's Manual page 302

Maintenance and Specifications
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.
302
2010 Econoline (eco)
Owners Guide, 1st Printing
USA (fus)
DON'T ADD IF IN CROSSHATCHED AREA • CHECK WHEN HOT
ADD COLD HOT DO NOT ADD
IDLING IN PARK