Fuel When It's Cool

Photo: Steven Stone / istock

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Cut down on gas emissions, which fill the air we breathe with ozone (smog) and contribute to global warming, simply by avoiding buying gas during the heat of the day, since heat increases evaporation.

Know that gasoline smell when you drive into a station? That's the smell of gas emissions escaping from your tank, the other cars' tanks and the pumps as everyone fills up.

So breathe easier: fill up either early in the morning or late in the evening when the temperature is cooler.

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