Base oil 4 cSt

4cst base oil is a low-viscosity base oil (approximately 4 centistokes at 100°C) typically classified under Group II or III base oils. It is widely used in specialized applications and high-performance lubricants due to its enhanced properties. With its low viscosity, it is ideal for formulations requiring high fluidity and effective lubrication across a wide range of temperatures. 4cst base oil is available in two main variants: 4cst Soil Korea and 4cst ADNOC, produced by globally recognized manufacturers—Soil Korea from South Korea and Abu Dhabi National Oil Company (ADNOC) from the United Arab Emirates.

4cst Soil Korea is produced using advanced hydrocracking technology, featuring high purity, extremely low sulfur content (less than 0.03%), and a high viscosity index (typically above 120). These characteristics make it suitable for sensitive applications such as low-viscosity hydraulic oils and industrial lubricants. 4cst ADNOC is also manufactured through modern refining processes, including hydrogenation, and is known for its excellent oxidation stability and bright appearance, making it a preferred choice in global markets. Both variants comply with international standards such as API and ASTM, designed for advanced lubricant formulations.

Group II and III base oils, like 4cst, offer superior thermal and chemical stability compared to Group I oils (such as SN150 or SN500) due to more advanced refining processes. These oils are generally derived from crude oil, but hydrocracking and isomerization processes minimize undesirable compounds like aromatics and sulfur, resulting in better performance and longer lubricant life. 4cst base oil typically constitutes 70–95% of lubricant formulations, with additives enhancing specific properties.

Applications

4cst base oil serves as a foundation for various lubricants and industrial products, including:

• Low-viscosity hydraulic oils

• Low-viscosity engine oils (such as 0W-20 or 5W-30)

• Automatic transmission fluids (ATF)

• Compressor oils

• High-performance industrial lubricants

• Transformer oils

• Chemical formulations and additives

Advantages of 4cst Base Oil

• Thermal and Chemical Stability: High resistance to degradation under high temperatures and pressures.

• High Purity: Low sulfur and aromatic content, especially in Soil Korea and ADNOC models.

• High Viscosity Index: Maintains fluidity at low temperatures and stability at high temperatures.

• Low Volatility: Reduces oil loss and extends lubricant life.

• Bright and Clear Appearance: Suitable for applications where product appearance matters.

• High Flash Point: Enhanced safety in high-temperature applications.

• Additive Compatibility: Excellent solubility for advanced formulations.

• Environmental Performance: Low sulfur content reduces environmental impact.

Viscosity Analysis

With a viscosity of 4cst at 100°C, this oil falls into the category of ultra-low viscosity oils, suitable for applications requiring rapid lubrication and high fluidity. Its high viscosity index (typically 120–140) ensures that it remains fluid at low temperatures while maintaining a stable lubricating film at high temperatures, making it ideal for sensitive equipment and modern high-tech engines.

Why Choose Our 4cst Base Oil?

Our 4cst base oils are sourced from reputable brands, Soil Korea and ADNOC, and are produced to the highest global standards. These products offer exceptional purity, outstanding stability, and versatility in formulations, making them perfect for advanced industrial and automotive applications. With efficient logistics from Sefehgan Customs and competitive bulk pricing, we ensure a reliable and cost-effective supply for your business. Choosing Soil Korea and ADNOC means trusting in unmatched quality and performance.