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:
Perchlorate material
Certain components of this vehicle such as airbag modules, safety belt
pretensioners, and button cell batteries may contain Perchlorate Material
– Special handling may apply for service or vehicle ...
Treadwear
The treadwear grade is a comparative rating based on the wear rate of
the tire when tested under controlled conditions on a specified
government test course. For example, a tire graded 150 would w ...
Cargo & Towing
The MKX's car-based construction again shows its benefit in cargo volume;
body-on-frame trucks tend to have less for an equivalent exterior size. My MKX
had a power liftgate, which comes in an opt ...
