The top viscosity index improvers (VIIs) are additives that help improve the performance of base oils by reducing their viscosity index. By doing so, they also reduce the oil's tendency to form deposits when it is exposed to high temperatures. This can help increase the life of your engine and protect it from wear and tear.

Viscosity Index Improvers (VIIs) are a type of additive that improves the performance of base oils by reducing their viscosity index (VI). The VI is a measurement of how much a stock lubricant thins at high temperatures. Low VI numbers mean that oil will thin less under pressure, while higher VI numbers indicate that oil will thin more easily when subjected to heat.

The viscosity index of engine oil is the measure of a motor oil's ability to resist viscosity thinning under high-temperature conditions. Viscosity thinning occurs when the internal components of an engine are subjected to excessive heat, causing the lubricating oil to thin and lose its effectiveness. This reduces the oil's ability to protect critical engine parts, leading to potential damage or even engine failure.

List of Top 3 Viscosity Index Improvers

Viscosity index improvers are chemicals that are added to fuels to improve their performance. They are used in gasoline, diesel and jet fuels. These chemicals increase the viscosity of the fuel, which helps improve its lubrication properties and reduce evaporation.

1. PETROLENE® 1410-P (45 SSI) is a high-performance Viscosity Index Improver (VI) used in lubricating oils and greases. PETROLENE® 1410-P (45 SSI) is an aromatic petroleum hydrocarbon resin that exhibits strong thixotropic properties and excellent thermal stability. PETROLENE® 1410-P (45 SSI) is a viscosity index improver for use in heavy-duty engine oils, gear oils, hydraulic fluids and industrial lubricants.

2. PETROLENE® 1110 is a viscosity index improver for polyalphaolefins (PAO). It is compatible with most other additives and can be used in blends with mineral oils. PETROLENE® 1110 provides excellent low-temperature fluidity and thermal stability. PETROLENE® 1110 is compatible with most other additives and can be used in blends with mineral oils.

3. Petrolene® VX-3 is a viscosity index improver that extends the life of lubricants and improves their performance. It is a synthetic product, specifically designed for use in gasoline engine oils. It also has excellent antiwear properties and good detergency. PETROLENE® VX-3 is suitable for use in all grades of gasoline engine oils, including those formulated with low VI base stocks. It is compatible with conventional additives to improve the oxidation stability of motor oils such as antioxidants, rust inhibitors, detergents and dispersants.