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:
Overview
Nearly identical to the Lincoln MKZ Concept shown at the North American
International Auto Show in January 2012, the production 2013 Lincoln MKZ
embodies a design language that is subtly distincti ...
Replacing headlamp bulbs
High beam/low beam bulb replacement
For driver side replacement of the high beam/low beam bulbs, do the
following:
1. Make sure the headlamp switch is in the off position, then open the
hood.
2 ...
Child booster seats
The belt-positioning booster (booster seat) is used to improve the fit of
the vehicle safety belt. Children outgrow a typical child seat (e.g.,
convertible or toddler seat) when they weigh about 4 ...
