Brand that can be bought using Speedpass, 5 letters
Chevron alternative, 5 letters
Company that merged with Mobil, 5 letters
Corporate giant based in Irving, Tex., 5 letters
Corporation that merged with Mobil in 1999, 5 letters
Half of a giant 1999 merger, 5 letters
It merged with Mobil, 5 letters
Mobil merger partner, 5 letters
Name atop some U.S. gas stations, 5 letters
Replacer of the Humble brand in the early 1970s, 5 letters
Speedpass-accepting gas company, 5 letters
Word with an interlocking set of double letters, 5 letters
Sobriquet in an Obama ad about tax breaks for oil companies, 9 letters
Corporate giant based in Irving, Tex., 10 letters
Product of a major 1999 merger, 10 letters
Result of a 1999 merger, 10 letters
Standard Oil descendant, 10 letters
Company that produces oil for Alabama?, 11 letters
Oil company's penchant for employee transfers?, 13 letters
It went down when the Valdez crashed, 10 letters