Chevron U.S.A. wears its name like a badge of honor. The company, the major US subsidiary of global oil and gas giant Chevron, oversees most of its parent's US businesses. Its portfolio includes oil and gas exploration, production, and refining assets. It is also one of North America's leading marketers of refined petroleum products (including diesel, gas, and motor oil). Chevron U.S.A operates a network of Chevron and Texaco gas stations across the US. Chevron U.S.A's industrial customers purchase base and process oils as well as fuel and lubricant additives.