Ford 2014 Focus ST Supplement Manual page 21

Maintenance
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. Premium fuel will provide improved performance and is
recommended for severe duty usage such as trailer tow.
Towing a Trailer
Note: The Focus ST was not designed for towing a trailer. It is not
recommended that a trailer of any size or weight be towed.
20
2014 Focus ST (stf)
Supplement, 1st Printing, June 2013
USA (fus)
87
(R+M)/2 METHOD