It's funny you should mention this. I filled up last time at Costco fuel center. They say they use 10% Ethanol in their fuel (not up to 10%, just 10%) and so far, this tank has gone farther on X amount of gas (whatever X turns out to be) then any tank previously. I will know for sure what the millage exactly is when I fill up (probably today or tomorrow), but judging by the gauge, I just broke below the 3/4 line and I've already gotten about 180 miles (I have a picture of it at 100 miles with the needle still right at the top from this tank, but it's on my phone). So either I'm doing something very very right this time or ethanol is causing my car to run leaner, not spray more fuel.
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