O-304 is primarily used as a high-performance additive in lubricants and industrial oils. It acts as an anti-wear and extreme pressure (EP) agent, enhancing the durability and efficiency of machinery operating under high load and temperature conditions. Commonly found in gear oils, hydraulic fluids, and metalworking formulations, O-304 helps reduce friction and prevent surface damage, extending equipment life. It is also valued for its thermal stability and compatibility with various base oils and additive packages, making it suitable for use in automotive, aerospace, and heavy industrial applications.