Wiley Marmot
Well-Known Member
Mine was crap on my GT right after it rolled off the lot (17 miles on the odo). Just under 600 miles today and got 18.4 MPG on the dash (rural highway run @ 60 MPH with the cruise set).
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You want the higher octane from the ethanol. Especially in the ecoWhat would yall say about 89 ethanol free vs 93??