Charles E. Knox Jr.

In 1955, Charles E. Knox, Jr., Chairman of the board for KNOX Oil, moved the corporate offices from Oklahoma to Dallas, TX, in order to establish a wholly-owned group of independent service stations.
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Currently marketed under the Super Diesel Premium Fuel logo, Knox continues to improve the trucking industry by improving fuel mileage and extending serviceability of equipment, while cleaning up the environment with the reduction of diesel fuel emissions.

In 1955, Charles E. Knox, Jr., Chairman of the board for KNOX Oil, moved the corporate offices from Oklahoma to Dallas, TX, in order to establish a wholly-owned group of independent service stations.Within one year, there was 65 Knox-Less Serve Ur Self stations in Oklahoma and Florida.These service stations were subsequently sold to Kerr McGee Corporation.

In 1972, Knox Oil of Texas, Inc., opened its Dallas offices.Also in 1972, Knox Oil continued to be an industry pioneer with the opening of one of the earliest, First-Class Self-Service truck stop facilities in America.Today, the seven Knox Fuel Stops in Texas are known by truckers from coast to coast for superior quality fuels.
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Currently marketed under the Super Diesel Premium Fuel logo, Knox continues to improve the trucking industry by improving fuel mileage and extending serviceability of equipment, while cleaning up the environment with the reduction of diesel fuel emissions.The ongoing expansion of the Super Diesel Premium Fuel Network will make these benefits available to all truckers as they travel from coast to coast.