Octane recommendations

Octane recommendations  - What you should know about automotive fuels - Maintenance and Specifications - Lincoln MKX Owners Manual - Lincoln MKX

“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

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:

    Folding rear head restraints (if equipped)
    The outboard rear head restraints may have a folding feature. Press the button on the side of the head restraints to fold them forward. Pull the head restraints up to unfold. ...

    Using MyKey with remote start systems
    MyKey is not compatible with non-Ford approved aftermarket remote start systems. If you choose to install a remote start system please see your authorized dealer for a Ford approved remote start s ...

    Automatic disarming
    The vehicle is disarmed immediately after the ignition is turned to the on position. The theft indicator will illuminate for three seconds and then go out. If the theft indicator stays on for an ...