Viscosity index improver is a type of additive that is designed to improve the viscosity of lubricating oils at high temperatures. Viscosity is a measure of an oil’s thickness and flowability. When an oil’s viscosity index is high, it means that it remains thick and viscous even at high temperatures, which helps to maintain proper lubrication and prevent wear on engine components. However, traditional lubricants often experience a significant drop in viscosity at high temperatures, which can lead to decreased lubrication and increased wear.
Viscosity index improvers can be broadly classified into two main categories: polymeric and non-polymeric additives.
Polymeric Viscosity Index Improvers:
These are the most common VIIs and are made up of large, flexible molecules that change their shape as the temperature fluctuates. They typically provide the greatest improvement in viscosity characteristics. Polymeric VI improvers are widely used in automotive oils, industrial oils, and other high-performance lubricants.
Non-Polymeric Viscosity Index Improvers:
These are smaller molecules, often made from more complex chemical structures, which are used to stabilize the viscosity in specific situations where polymeric additives might not be suitable. Non-polymeric VI improvers are often employed in high-temperature or high-pressure conditions where polymeric improvers may degrade.




Rumanza viscosity index improver is a cutting-edge additive that has revolutionized the automotive industry. Its ability to improve the viscosity index of lubricating oils makes it an essential component in maintaining optimal engine performance, reducing wear and tear on engine components, and extending engine life. With its superior performance, high-temperature capabilities, and wide compatibility, Rumanza VII is an ideal choice for automotive manufacturers and industrial applications alike. As the demand for sustainable and efficient solutions continues to grow, Rumanza viscosity index improver is poised to play a significant role in shaping the future of automotive lubrication.



