Petroleum products are the result of processing crude oil in refineries. These valuable materials play a vital role in our daily lives and various industries. They encompass a wide range of products, from transportation fuels like gasoline, diesel, ultra-low-sulfur diesel (ULSD), and liquefied petroleum gas (LPG) to various industrial and automotive lubricants and base oils. These products are categorized based on their properties, complex production processes, and diverse applications. A precise understanding of them, from road-grade bitumen to jet fuel, helps us to better comprehend the profound impact of the oil industry on the global economy, technology, and human life.