1.   For the moment, Czech refineries work best with Russian oil, for which they were designed.

2.   If we passed a gasoline tanker truck, he could explain whether you wanted him to or not how refineries worked.

3.   With July Fourth approaching, U.S. refineries are working at their highest level in a quarter century, producing record levels of gasoline.

4.   In other testimony, John Felmy of the American Petroleum Institute said refineries are working at full capacity to build heating oil stocks.

5.   Refineries are working at full capacity and reserves of oil held in the United States are being reduced.