Related Clues:

• Lower-priced gas option: Abbr.
• Model: Abbr.
• Rule, briefly
• CST part: Abbr.
• Gas pump abbr. of old
• It's less than premium: Abbr
• Part of S.O.P.: Abbr
• Part of SOP: Abbr
• Shell choice: Abbr
• Not automatic: Abbr
• Part of P.S.T.: Abbr
• Gas pump abbr
• __ U.S. Pat. Off
• Pump choice: Abbr
• Reg