Chances are, you’ve heard tales of fuel pump etiquette framed as fuel- and money-saving tips: Fill up once your tank is half-empty. Pump gas slowly to avoid vaporization. In contrasting wisdoms, some ...

Add Yahoo as a preferred source to see more of our stories on Google. Collage of a woman filling her gas tank and her car's mileage display showing 522 miles. Apparently, slow and steady fuels the ...