Related Clues:
- Shell competitor
- U.S. brand retired in 1972
- Sinclair rival
- Where an Edsel filled up, maybe
- Socony rival
- Old Shell rival
- This put a tiger in your tank
- Jersey Standard's other name
- It's a gas
- Bygone U.S. gas brand
- Classic gas brand
- Old gas brand
- Exxon predecessor
- Big name in petroleum
- Shell alternative