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:
Safety
All-disc antilock brakes and dual-stage front airbags are standard. A
curtain-type airbag Safety Canopy system enhances occupant protection in side
impacts and rollovers. The revised rear park-ass ...
The Inside
The MKX's cabin is mostly an asset, but a couple of aspects hold it back. I
found it pretty easy to get into the seats, which provide a nice ride height
without requiring a grappling hook — or ste ...
Front safety belt pretensioners
The safety belt pretensioners at the front outboard seating positions are
designed to tighten the safety belts firmly against the occupant’s body
during frontal collisions, and in side collisions ...
