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:
Maintenance and modifications
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and tested to provide predictable performance whether loaded or empty
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Waxing
• Wash the vehicle first.
• Use a quality wax that does not contain abrasives.
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Genuine Ford parts and service
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There are a lot of reasons why visiting your dealership for all your
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