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circatee

Standard or Premium petrol for your ST?

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Not sure if I specifically asked this question, on this forum previously. 

But, for your ST, as a daily driver, do you use Standard or Premium petrol?

 

Thanks all

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Probably best for me to follow the manual, 91 or higher. And, 93 if looking to maximize the 335hp... 

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for ecoboosts, 93 is highly recommended for those looking for power or those who mash the wawa pedal on a frequent basis.  more octane = more available timing advance.

 

the real gains come after you put on an aftermarket tune.  mostly because the factory tune runs pig rich to protect the engine, so the tuners can lean it out without detriment.  but also because transmission shifting behavior is improved, faster and crisper.

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