Experience Running CX-90 Turbo S With US 87 Octane?

That’s interesting, because (on paper at least) the PHEV only gains a 4hp gain from 93, and i don’t believe the skyactiv 4 cylinders are known from benefitting from high octane fuel.

The premium fuel must provide benefits lower in the powerband then, which wouldn’t show in the HP rating. Maybe this 4 cylinder is a different engine than the 2.5 NA found in the rest of the mazda lineup.
 
That is good as the CX-90 needs some help in the everyday 20-40 30-50 jaunts.
 
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