Ford Explorer 2011 Owner's Manual page 268

Tires, Wheels and Loading
• Do not exceed 65 mph (105 km/h)
• Start the engine and allow it to run for five minutes at the beginning
of each day and every six hours thereafter. With the engine running
and your foot on the brake, shift into D (Drive) and then into R
(Reverse) before shifting back into N (Neutral).
268
2011 Explorer (exp)
Owners Guide, 3rd Printing
USA (fus)