2009 Ford F150 Owner Guide 3rd Printing - Page 311

Driving Do not rock the vehicle if the engine is not at operating temperature. Do not rock the vehicle for more than a minute. The transmission and tires may be damaged or the engine may overheat. WARNING: Do not spin the wheels at over 35 mph (55 km/h). The tires may fail and injure a passenger or bystander. Engine temperature while plowing When driving with a plow, your engine may run at a higher temperature than normal because the attached snowplow blade will restrict airflow to the radiator. If you are driving more than 15 miles (24 km) at temperatures above freezing, angle the plow blade either full left or full right to provide maximum airflow to the radiator. If you are driving less than 15 miles (24 km) at speeds up to 40 mph (64 km/h) in cold weather, you will not need to worry about blade position to provide maximum airflow. Factory installed snow plow prep package vehicles already have been programmed with the unique power train control strategy to provide proper cooling. If the vehicle is being upgraded to the equivalent hardware set as the snow plow prep package, then the vehicle can obtain the unique power train control strategy to provide proper cooling by getting service at an authorized dealer. The powertrain control strategy required for snowplowing to provide proper cooling may increase fan noise that may also be noticed under conditions other than snow plowing. 311 2009 F-150 (f12) Owners Guide (own2002), 3rd Printing USA (fus)