11.   Mindful of the health problems caused by leaded gasoline, the EPA battled Ethyl for years, trying to keep MMT out of unleaded gasoline.

12.   On Friday morning, New York Harbor unleaded gasoline futures were down slightly after hitting a nine-year high on Thursday.

13.   Service stations were expected to run out of unleaded gasoline Wednesday, and the fuel shortage began spreading to other forms of transportation.

14.   The actions come a month after the capital switched to unleaded gasoline.

15.   The American Automobile Association yesterday said average U.S. retail prices for self-serve regular unleaded gasoline rose to their highest of the year this month, equaling prices in January.

16.   The engine operates on unleaded regular gasoline.

17.   The Environmental Protection Agency, however, which fought vigorously but unsuccessfully to keep MMT out of unleaded gasoline in the United States, has no such confidence.

18.   The recommendation for the other models is an octane level that should be satisfied by regular unleaded gasoline.

19.   To combat the worsening pollution, the government shut down a huge oil refinery several years ago and began production of unleaded gasoline.

20.   Unleaded gasoline became an automotive symbol of post-communist progress to me.