ZDDP Zinc DiAlkyl Dithio Phosphate

ZDDP stands for Zinc DiAlkyl Dithio Phosphate, which is a type of chemical compound commonly used as an anti-wear and antioxidant additive in lubricating oils, particularly in engine oils. It is widely used in automotive and industrial applications to protect metal surfaces from wear and corrosion.

ZDDP works by forming a protective layer on metal surfaces, which helps reduce friction and wear between moving parts. This is particularly important in high-stress areas of engines, such as the camshaft and valve lifters. Additionally, ZDDP provides some antioxidant properties, helping to prevent the oxidation and degradation of the oil under high-temperature conditions.

However, there has been ongoing research and discussion about the use of ZDDP due to its potential environmental impact and its effects on emission control systems in modern vehicles. As emission standards become stricter and engine technologies evolve, there has been a shift towards lower levels of ZDDP in engine oils.