PB04 is widely used as a performance additive in lubricant formulations, particularly in engine oils and industrial greases. It enhances anti-wear and extreme pressure properties, helping to protect metal surfaces under high load and high-temperature conditions. Its effectiveness in reducing friction contributes to improved fuel efficiency and extended equipment life. PB04 also demonstrates good thermal stability and compatibility with various base oils and other additives, making it suitable for use in automotive, aerospace, and heavy machinery applications. Additionally, it is employed in metalworking fluids to prevent tool wear and improve machining performance.