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:
Vehicle sensitive mode
This is the normal retractor mode, which allows free shoulder belt length
adjustment to your movements and locking in response to vehicle
movement. For example, if the driver brakes suddenly or tu ...
Deactivating/activating the Belt-Minder feature
The driver and front passenger Belt-Minder are
deactivated/activated independently. When deactivating/activating
one seating position, do not buckle the other position as this will
terminate the ...
Adaptive cruise control
Adaptive cruise control (ACC) is paired with collision warning because both
utilize the forward-looking radar system. With a range up to 600 feet, ACC
monitors and adjusts the speed of the Lincoln M ...
