Octane recommendations

3.7L V6 engine
“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.

3.5L V6 EcoBoost™ engine
“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. Premium fuel will provide improved performance and is recommended for severe duty usage such as trailer tow.
Do not be concerned if your engine sometimes knocks lightly. However, if it knocks heavily while you are using fuel with the recommended octane rating, see your authorized dealer to prevent any engine damage.
See also:
Adaptive headlamps (if equipped)
The headlamp beams move in the same direction as the steering wheel
which provides more visibility when driving around curves.
• Without adaptive headlamps (1)
• With adaptive headlamps (2)
...
Exceptions
There are several exceptions to the Normal Schedule. They are listed
below:
Normal vehicle axle maintenance: Rear axles and power take-off
(PTO) units with synthetic fluid and light-duty trucks e ...
INTERIOR
The MKT has plenty of luxury features, but there were so many that I felt
like I had feature fatigue. I got tired of struggling with them. The first
feature to confound me was the driver's seat th ...
