- Canada and Hawaii have used automatic temperature adjustment devices at retail fuel pumps for a number of years.

- Larger fuel retailers turn over supply very rapidly, greatly reducing the fuel's time spent in the underground, insulated tanks.

Resources

California Energy Commission

Foundation for Consumer and Taxpayer Rights
http://www.oilwatchdog.org/

Measurement Canada | Mesures Canada
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Photos

The first photo shows a sign on a gasoline pump warning consumers they may not be getting what they pay for.

The other was sent by a concerned citizen who discovered fuel tanks in Arizona that were painted black.