Related Clues:
- Big name in petrol
- Company with the old mascot Little Oil Drop
- Company that merged with BP
- Conoco competitor
- Old 'Happy motoring!' sloganeer
- European gas brand
- Gas company bought by BP
- It was associated with Humble Oil
- Gas station of yore
- Cities Service competitor
- Its slogan was once 'The sign of extra service'
- Standard Oil, formerly
- Getty competitor, once
- Station along Route 66
- Calgary's ___ Plaza