Top Tier Gasoline

GEI guarantees high quality gas that meets Top Tier Gasoline requirement including higher levels of cleaning detergents that improves your engine performance—designed to help your car run smoother and longer. All of our Branded Partners support the Top Tier Gasoline requirements.


BP is one of the world’s leading integrated oil and gas companies. We provide customers with fuel for transportation, energy for heat and light, lubricants to keep engines moving, and the petrochemicals products used to make everyday items as diverse as paints, clothes and packaging.

In October 2017, BP announced the reintroduction of their long-standing Amoco brand to the US fuel retail sector – around a century after the first Amoco Service Station opened in Minneapolis, Minnesota. When Amoco and BP merged in 1998, the new company, BP Amoco, became the largest producer of both oil and natural gas in the US. In 2001, BP Amoco changed its brand to simply ‘BP’.

The 2017 reintroduction of Amoco as a retail brand alongside BP is taking place in US cities with potential additional growth opportunities.

CEO: Robert Dudley
London, England
Founded: 1909
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Headquartered in Houston, Texas, CITGO Petroleum Corporation has been fueling America for more than 110 years and is a recognized leader in the refining industry with a well-known brand. CITGO owns and operates three highly complex crude oil refineries located in Corpus Christi, TX; Lake Charles, Louisiana; and Lemont, Illinois, and wholly and/or jointly owns 48 terminals, nine pipelines and three lubricants blending and packaging plants. With approximately 3,400 employees and a combined crude capacity of approximately 769,000 barrels-per-day (bpd), CITGO is ranked as the fifth-largest and one of the most complex independent refiners in the United States. CITGO manufactures, transports and markets transportation fuels, comprehensive lines of lubricants, petrochemicals and other industrial products; and supplies a network of approximately 4,900 locally owned and operated branded retail outlets in 30 states and the District of Columbia. CITGO invested more than $54 million annually in social responsibility programs and initiatives over the last decade and has raised more than $250 million for the Muscular Dystrophy Association since 1986. More than 10,000 volunteer hours per year are contributed by our employees toward social responsibility projects. CITGO Petroleum Corporation is owned by CITGO Holding, Inc. For more information, visit

CEO: Carlos Jordá 

Headquarters: Houston, Texas

Founded: 1910

CITGO Portal Login


Exxon Mobil Corporation is an American multinational oil and gas corporation headquartered in Irving, Texas, which is a part of the Dallas–Fort Worth metroplex.

CEO: Darren W. Woods
Headquarters: Irving, Texas
Founded: 1882
ExxonMobil Portal Login


Marathon Oil Corporation is an American petroleum and natural gas exploration and production company headquartered in the Marathon Oil Tower in Houston, Texas.

CEO: Lee M. Tillman
Houston, Texas
Founded: 1887
Marathon Portal Login


Shell Oil Company is the United States-based subsidiary of Royal Dutch Shell, a multinational “oil major” of Anglo-Dutch origins, which is amongst the largest oil companies in the world. Approximately 22,000 Shell employees are based in the U.S.

CEO: Ben van Beurden
Houston, Texas
Founded: 1912
Shell Portal Login

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