Group 4 base oils are a type of petroleum-based oil that is refined from vacuum gas oil (VGO) and is characterized by its extremely high viscosity index (VI) and ultra-low sulfur content. They are classified as a premium base oil, offering superior performance characteristics compared to other types of base oils.
The high VI of Rumanza Group 4 base oil ensures excellent low-temperature performance, making it suitable for use in extreme cold climates.
The additives used in Rumanza Group 4 base oil provide excellent rust protection, ensuring that metal surfaces remain corrosion-free even in harsh environments.
Rumanza Group 4 base oil is compatible with advanced engine technologies such as turbocharging, supercharging, and direct injection systems.
Its superior thermal stability and rust protection properties make it an ideal choice for use in engine oils for passenger cars, commercial vehicles, and motorcycles.
Its high VI and shear stability make it suitable for use in gear oils for manual and automatic transmissions.
The additives used in Rumanza Group 4 base oil provide excellent rust protection and thermal stability, making it an attractive choice for use in hydraulic systems and braking systems.




Rumanza Group 4 base oil is a game-changing technology that has revolutionized the world of automotive lubrication. Its superior performance characteristics, environmental benefits, and compatibility with modern engine technologies make it an attractive choice for manufacturers and lubricant blenders alike. As the demand for sustainable and high-performance lubricants continues to grow, we can expect to see continued innovation and development in this area.




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