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:
Filling the tank
The advertised fuel capacity of the fuel tank on your vehicle is equal to
the rated refill capacity of the fuel tank as listed in the Maintenance
product specifications and capacities section of t ...
Performance
The MKX's best performance attributes are those that its rival, the Lexus,
takes for granted.
This Lincoln glides softly on the road, with little wind and road noise. Even
the optional 20-inch w ...
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 ...
