Maryland Business Regulation Section 10-323

      (a)      A common carrier, contract carrier, manufacturer, refiner, special fuel seller, wholesaler of motor fuel, or person who buys motor fuel in bulk for resale in bulk who is engaged in the transportation of motor fuel may not willfully adulterate or commingle gasoline with special fuel.

      (b)      Except for motor fuel intended for its own use, a petroleum transporter may not place an additive in motor fuel.

      (c)      This section does not prohibit the adulteration or commingling of gasoline with special fuel that occurs as a natural result of transit in a pipeline carrier.