Fully Synthetic Gear Oils: Deciphering The Ingredients

Fully Synthetic Gear Oils: Deciphering The Ingredients


Fully synthetic gear oils are engineered marvels that play a critical role in ensuring the smooth and efficient operation of gears in a wide range of machinery and vehicles. These high-performance lubricants are the result of extensive research and development, formulated to meet the demands of modern mechanical systems. To appreciate their efficacy, it’s essential to delve into the ingredients that make up fully synthetic gear oil.

Base oil:

The foundation of any lubricant is the base oil. Fully synthetic gear oils use synthetic base oils, which are chemically synthesized rather than refined from crude oil. These synthetic base oils offer precise control over the molecular structure, resulting in oils with consistent and predictable properties. The ability to tailor the base oil’s molecular structure is a significant advantage, as it allows engineers to design lubricants with exceptional lubricating and protective capabilities.


Fully synthetic gear oils are not just pure base oils; they contain a carefully selected blend of additives that enhance their performance in various ways.

Anti-wear additives: To protect gears from excessive wear, anti-wear additives are included in synthetic gear oils. These additives form a protective layer on the gear surfaces, reducing friction and preventing metal-to-metal contact, thus extending the life of the gears.

Extreme pressure (EP) additives: EP additives are crucial in applications where gears are subjected to high loads and pressures. They create a durable barrier between gear surfaces, preventing wear and damage under extreme conditions.

Corrosion inhibitors: Preventing corrosion is essential in gear systems, especially in outdoor or humid environments. Corrosion inhibitors in synthetic gear oils form a protective layer on metal surfaces, shielding them from moisture and oxidation.

Foam suppressors: In some applications, gears can churn oil and create foam, which can reduce the lubricating effectiveness. Foam suppressors help to control and minimize the formation of foam.

Viscosity modifiers:

Viscosity modifiers are polymers added to synthetic gear oils to ensure that their viscosity remains stable over a wide range of temperatures. These modifiers allow the oil to maintain its lubricating properties when subjected to both high and low temperatures.

Pour point depressants:

In cold environments, it’s essential for gear oil to flow freely. Pour point depressants are additives that improve the oil’s low-temperature fluidity, ensuring that it remains effective even in chilly conditions.