Oil acts as a lubricant. Additives increase the base capabilities of any oil. Whether the choice is zinc dialkyl dithiophosphate (ZDDP) or a viable phosphorous-based alternative, industries rely on anti-wear additives to ensure the machinery operates without major wear issues, extending its longevity to comply with the stated best-before date. For more information visit at lubeperformanceadditives.com/lubricants/Antiwear_Hydraulic_Fluids.