Octane recommendations

“Regular” unleaded gasoline with a pump (R+M)/2 octane rating of 87 is recommended. Some stations offer fuels posted as “Regular” with an octane rating below 87, particularly in high altitude areas. Fuels with octane levels below 87 are not recommended.

Do not be concerned if your engine sometimes knocks lightly. However, if it knocks heavily under most driving conditions while you are using fuel with the recommended octane rating, see your authorized dealer to prevent any engine damage.
See also:
Adding engine oil
1. Check the engine oil. For instructions, refer to Checking the engine
oil in this chapter.
2. If the engine oil level is not within the normal operating range, add
only certified engine oil of ...
Entertainment Systems
MYLINCOLN TOUCH™
WARNING: Driving while distracted can result in loss of vehicle
control, accident and injury. Ford strongly recommends that
drivers use extreme caution when using any device that ...
Adjusting the front power seat
WARNING: Never adjust the driver’s seat or seatback when the
vehicle is moving.
WARNING: Do not pile cargo higher than the seatbacks to
reduce the risk of injury in a collision or sudden stop.
W ...
