Octane recommendations

Octane recommendations  - What you should know about automotive fuels - Maintenance and Specifications - Lincoln MKS Owners Manual - Lincoln MKS

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

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:

    Working with the engine off
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    Air filter
    Refer to scheduled maintenance information for the appropriate intervals for changing the air filter element. When changing the air filter element, use only the air filter element listed. Refer t ...

    Washing the exterior
    Wash your vehicle regularly with cool or lukewarm water and a neutral pH shampoo, such as Motorcraft Detail Wash (ZC-3-A), which is available from your authorized dealer. • Never use strong house ...