- Able Energy
- Home energy provider offers heating oil, propane, kerosene, diesel, gasoline, and natural gas products.
- Caltex
- Chevron Corporation oil and gas brand operating in the Asia-Pacific, Africa and Middle East regions.
- Chevron
- Global enterprise engaged in energy exploration and harnessing. Site presents information on brands and products, worldwide operations, and corporate responsibility.
- ConocoPhillips
- Oil and gas company's website presents news, product and brand details, and corporate and career information.
- Exxon Mobil
- Official website of the world's largest integrated oil company. Presents news, corporate particulars, product and service details, and information on career opportunities.
- Frontier Oil Corporation
- Company information presented includes news, employment opportunities, financial and operating reports, and product and marketing details.
- Havoline
- Motor oil brand owned by the Texaco Oil Company. Product details, information on business opportunities, and corporate contacts.
- Hess Corporation
- Integrated oil and gas company's website provides information on business units, operating highlights, and investor relations.
- Marathon Oil Corporation
- Publicly-traded oil and gas company based in Houston, Texas. News, contacts, and information on corporate values and investor relations.
- Marathon Petroleum Company LLC
- Crude oil and natural gas refining, marketing and transportation company located in Houston, Texas.
- Murphy Oil Corporation
- Presents information on investor relations, corporate governance and responsibility, and business operations.
- Oronite
- Fuel and lubricant additive products company operated as a subsidiary of Chevron Corporation.
- Paralux
- Praffinic process oils produced from all-hydroprocessing technology that lowers aromatic content. By Chevron.
- Sunoco
- Information on investor relations, jobs and careers, stations, environment and safety policies, and consumer products and services.
- Texaco
- New York based public company engaged in the exploration, manufacture, and marketing of petroleum-based products such as automotive gasoline and oils.
- Valero Energy Corporation
- San Antonio, Texas based petrochemical company's website presents information on the products offered, investor relations, and community service.
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