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:

    Damage
    Periodically inspect the tire treads and sidewalls for damage (such as bulges in the tread or sidewalls, cracks in the tread groove and separation in the tread or sidewall). If damage is observed ...

    Underbody
    Flush the complete underside of your vehicle frequently. Keep body and door drain holes free from packed dirt. ...

    Calculating fuel economy
    1. Fill the fuel tank completely and record the initial odometer reading (in miles or kilometers). 2. Each time you fill the tank, record the amount of fuel added (in gallons or liters). 3. Af ...