Additives are chemical compounds added to lubricating oils to enhance their performance and protect machinery under varying operating conditions. They play a critical role in reducing wear, preventing corrosion, improving viscosity, and maintaining oil stability.
Anti-Wear (AW) Additives
Anti-wear additives form a protective film on metal surfaces, minimising direct metal-to-metal contact. This reduces friction and prevents surface damage under normal operating conditions.
Extreme Pressure (EP) Additives
Extreme pressure additives are designed for high-load or shock-load conditions, where standard oils may fail. They react chemically with metal surfaces at elevated temperatures, forming a protective layer that prevents welding, scoring, or seizure.
ZDDP (Zinc Dialkyldithiophosphate)
ZDDP is one of the most common anti-wear additives. It provides both anti-wear and antioxidant properties, protecting engine components while also helping to prevent oil oxidation. Its effectiveness makes it widely used in automotive and industrial lubricants.
The correct selection and combination of additives are essential for optimising oil performance, extending equipment life, and ensuring reliable operation in demanding environments.