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Related Clues:
- Shell competitor
- L.A.-based petroleum giant
- 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
- Big name in oil
- Jersey Standard's other name
- It's a gas
- Bygone U.S. gas brand
- Classic gas brand
- Old gas brand
- Exxon predecessor