FORD 2008 E-450 v.2 - Manual (Page 216)

Emergency Towing
In case of a roadside emergency with a disabled vehicle (without access
to wheel dollies, car hauling trailer, or flatbed transport vehicle) your
vehicle (regardless of transmission powertrain configuration) can be flat
towed (all wheels on the ground) under the following conditions:
• Vehicle is facing forward.
• Place the transmission in N (Neutral).
• Maximum speed is not to exceed 35 mph (56 km/h).
• Maximum distance is 50 miles (80 km).
2008 Econoline (eco)
Owners Guide (post-2002-fmt)
USA (fus)
Roadside Emergencies
216