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:

    One-time disable
    If at any time the driver/front passenger quickly buckles then unbuckles the safety belt for that seating position, the Belt-Minder is disabled for the current ignition cycle. The Belt-Minder feat ...

    Easy entry/exit feature
    When the ignition is turned off, the column will move to the full up and in position if this feature is activated through the message center. Refer to Message center in the Instrument Cluster chap ...

    System check and vehicle feature customization
    Press the SETUP button repeatedly to cycle the message center through the following features: RESET FOR SYSTEM CHECK When this message appears, press the RESET button and the message ...