For 1990-2009 cars only
Caution: Changing the Fan Drive Ratio or Engine Governed Speed:
If you change the fan drive ratio or increase the governed speed of the engine, you might increase stress and the fan could eventually fail. If the fan breaks apart while rotating, pieces can cause severe injury to anyone -- such as a service technician -- who is nearby. And, of course, the pieces can severely damage the vehicle. Do not change the fan drive ratio or increase the governed speed of the vehicle without getting the necessary information from your dealer/retailer. Winter Fronts, Grille Covers, or Obstructions: Winter Fronts, grille covers, or other add-on equipment causing obstructions in front of or behind the fan should not be used on this vehicle. If this causes the fan to eventually break apart while rotating, the pieces can cause severe injury to anyone nearby, such as a service technician working on the engine, and, of course, the pieces can severely damage the vehicle.