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Got my 2nd best tank ever yesterday with 55.26 mpg. My best was about 3 months ago at 56.14 mpg. This time around the car thought I was doing 60.0 MPG. It's always displaying high. I've been driving with ethanol-free gas which is more expensive, but it's worth it to me to not have to fill up as often. This time I filled with 90 octane ethanol free though instead of the normal 87 octane e-free (because of the gas station I used.)
Also, yesterday before filling up I pumped the tires up to 60 PSI. I've never run them this high before in this car. Maybe between the tire pressure and the higher octane I can get a 600 mile tank? I had the tires at 48 psi.
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