Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum - View Single Post - anyone using premium gas ?
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Old 02-04-2013, 12:25 PM   #46
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Guys look in your manual in the section on fueling your car and what type of fuel to run, you will see a sentence in there that states that that premium fuel gains improved performance.

Ford has had adaptive fuel strategies in their cars for years now, they just do not advertise it. Many of their engines gain significant horsepower from premium fuel. The ECU allows more timing, etc.

I remember that Mazda on the CX9 (which is a 3 row Edge with the 3.7 liter engine instead of the 3.5) actually advertised that horsepower went from 273 to I believe 298 with premium fuel (the CX9 uses the non-Ti-VCT version of Ford's 3.7).
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