FORD 2013 E-450 v.2 - Manual (Page 218)

High Fluid Level
Fluid levels above the safe range may result in transmission failure.
An overfill condition of transmission fluid may cause shift and/or
engagement concerns and/or possible damage.
High fluid levels can be caused by an overheating condition.
H
C
Maintenance 217
2013 Econoline (eco)
Owners Guide gf, 2nd Printing, November 2012
USA (fus)