2017 Acura MDX Tech FWD
I've done some tests over multiple vehicles and using different fuel stations (had the pleasure of Costco for my MDX, Shell/Chevron/Wawa/Walmart for the other vehicles) where there was no improvement with 93 Octane in the MPGs and Range.Not extensive tests, no. It was certainly true in another car I had, and some limited testing seemed to bear that out with my MDX so i quit monitoring honestly. Gas is not created equal. Many pumps here now say “may contain ethanol” and they wholesale buy what is cheapest, so you never know.
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I do got plans to literally do these same tests with the Type S before I go crazy with modding it.
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