Can you run the Fiesta ST 1.6L on Regular 87 Octane?

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RBYM

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Can you run the Fiesta ST 1.6L on 87 octane and go full throttle safely? In CA all we have is a maximum of 91 octane but I rarely go full throttle. I just just wondering if it’s safe to go wot on 87 octane?
 


Grsemky

Grsemky

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Yes factory maps allow 87 at reduced power, however I recommended staying with 91.. I'm in AZ with the same shitty gas and never used less than 91
 


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