Related Clues:

• ___ Plaza, former Calgary landmark name
• Conoco rival
• Brand with a tiger slogan
• Classic brand name in an oval logo
• Old gas station sign
• Old service station name
• Logo along U.S. highways, once
• One-time pump sign
• 'The sign of extra service' sloganeer, once
• Canadian gas brand
• Old name at the pumps
• Gas brand in Canada
• Studebaker's fill-up, maybe
• Pump sign in Canada
• Old U.S. gasoline