Thread: Significant Gas Mileage Increase after an annual service
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      05-23-2018, 10:00 PM   #8
tracer bullet
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Drives: '11 135i , '15 X3 35i
Join Date: May 2011
Location: Saint Paul, MN

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Weather change? Fuel blend change (do they add ethanol over there)? Higher tire pressures?
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