Related Clues:
- Old name in oil
- Old station identification
- Rival of 43-Across
- Bygone brand on U.S. highways
- Mobil rival of old
- Gulf competitor
- Rockefeller's company
- Predecessor of Exxon
- Humble Oil gasoline brand
- Bygone U.S. gas name
- Bygone gasoline brand
- 'Put a tiger in your tank' company
- Little Oil Drop was its mascot
- 'Happy Motoring!' sloganeer
- Old rival of 105-Across