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:
Erasing personal code
1. Enter the factory set 5–digit code.
2. Within five seconds, press the 1 • 2 on the keypad and release.
3. Press and hold the 1 • 2 for two seconds. This must be done within
five seconds of c ...
Instrument panel/interior trim and cluster lens
Clean the instrument panel, interior trim areas and cluster lens with a
clean, damp, white cotton cloth, then use a clean and dry white cotton
cloth to dry these areas.
• Avoid cleaners or poli ...
V-6 Power
The MKZ's powertrain is another highlight. The 3.5-liter V-6 delivers strong
acceleration; there's plenty of power to get you up to speed quickly and
effortlessly. The large-displacement V-6 also ...
