ZDDP is one of the most important additives in this field, which is used in almost all lubricating oils, especially motor oil. ZDDP converts hydroperoxides formed from chain reactions into products that can act as antioxidants themselves. The main application of ZDDP is as an anti-wear additive in all types of lubricants, including grease, hydraulic oil, and engine oil. ZDDP also acts as an anti-corrosion and anti-oxidation agent.