EN6 is used in the formulation of high-performance lubricants and greases due to its excellent thermal stability and resistance to oxidation. It is commonly applied in automotive and industrial machinery where extreme pressure and high-temperature conditions are present, helping to reduce friction and wear on moving parts. Its compatibility with various elastomers and metals makes it suitable for use in seals and bearings. Additionally, EN6 serves as an additive in metalworking fluids to enhance tool life and improve surface finish during machining operations.