NewMarket Corporation, through its various subsidiaries, operates primarily in the specialty chemicals sector, specializing in the creation and supply of petroleum additives. The company furnishes an extensive selection of lubricant additives that are vital for optimizing performance across a wide array of automotive and industrial machinery. These formulations cater to diverse applications, including engine oils (used in passenger cars, motorcycles, heavy-duty commercial vehicles, locomotives, and marine engines), driveline systems (such as transmission and axle fluids, and lubricants for off-road powertrains), and a variety of industrial fluids (like hydraulic fluids, greases, industrial gear lubricants, and specialized turbine oils).