In 1956, Sunoco introduced "custom blending" pumps, an innovation that allowed customers of Sunoco service stations to choose from several octane ratings through a single pump. Sunoco stations offered as many as eight grades of "Custom Blended" gasolines from its "Dial A Grade" pumps ranging from subregular Sunoco 190 to Sunoco 260, the latter a super-premium grade of 102 octane that was advertised as the "highest octane pump gas" and very popular with operators of V8-powered muscle cars of the 1960s.
High Octane people need High Octane signage for their High Octane toys. And nothing fits that bill better than this eye catching logo. It is a perfect addition for your garage, bar, or living room.