Received this in an email alert, today...

Some fuel station pumps are not accurately reflecting the amount of fuel consumers put into their tank. Consumers are challenged to check each pump to help stop potential rip-offs. To help, stop the pump at exactly 10 gallons and examine the dollar amount at that point. If the dollar amount is not exactly 10 times the price of the fuel grade unit cost, then the pump is rigged.
If you find a rigged pump, do the following:

    1) Finalize your purchase at the 10 gallon amount.
    2) Keep your receipt.
    3) Note the pump number.
    4) Note the grade of fuel.
    5) Note the time of day and date.
    6) IF you have a cell phone, take a photo of the pump.
    7) Note the name of the station and the location.
    8) Notify authorities.