“…Their main tasks, among others, involve: improving the friction and wear performance between interacting surfaces; enabling the control of friction; serving as a coolant or heat transfer medium; increasing resistance against corrosion, oxidation and degradation by acids 1,2 ; and to keep surfaces clean. 3,4 There is a wide range of additives such as zinc dialkyldithiophosphates (ZDDPs), which are known for their anti-wear, anti-corrosion and anti-oxidant functionality. Therefore, ZDDPs are often applied in engine lubricants as well as hydraulic and transmission oils.…”