Base Oil 4cST

Base Oil 4cST is a high-quality low-viscosity mineral base oil produced from carefully selected petroleum feedstock through advanced refining processes. It is also commercially known as 4 Centistoke Base Oil, 4 cSt Base Oil, Low Viscosity Base Oil, Light Neutral Base Oil, SN Grade Base Oil (in some markets), and Lubricant Base Stock. Base Oil 4cST is classified as a Group I or Group II type base stock depending on the refining technology and quality parameters. Due to its excellent fluidity, controlled volatility, good oxidation stability, and suitable solvency characteristics, it is widely used as an important raw material for manufacturing various lubricants and industrial oil formulations. This product is mainly supplied for wholesale export to lubricant manufacturers, blending plants, and industrial users worldwide.

The production process of Base Oil 4cST begins with crude oil atmospheric and vacuum distillation to separate suitable lubricant fractions. The selected vacuum gas oil streams undergo solvent extraction, hydro-treatment, dewaxing, and finishing processes to remove undesirable compounds such as sulfur, nitrogen, aromatics, and wax components. Advanced refining improves color, thermal stability, oxidation resistance, and viscosity performance, resulting in a clean and consistent low-viscosity base oil. Commercially available types include Base Oil 4cST Group I, Group II Base Oil 4 cSt, Light Neutral Base Oil, and specialty low-viscosity lubricant base stocks, which are selected according to the requirements of different lubricant formulations and industrial applications.

Base Oil 4cST is mainly used in the production of automotive lubricants, engine oils, hydraulic fluids, compressor oils, spindle oils, process oils, metalworking fluids, and specialty industrial lubricants. It is also used as a blending component to adjust viscosity, improve low-temperature performance, and achieve specific lubricant specifications. The main advantages of Base Oil 4cST include excellent low-temperature flow, high purity, good oxidation resistance, stable viscosity characteristics, compatibility with additive packages, and reliable performance in high-speed machinery applications. Its consistent quality makes it a preferred choice for manufacturers seeking an efficient and economical lubricant base stock for international markets.

Specification	Typical Value
Product Name	Base Oil 4cST
Alternative Names	4 Centistoke Base Oil, Low Viscosity Base Oil
Base Oil Group	Group I / Group II (Depending on Refining Technology)
Kinematic Viscosity @40°C	Approx. 15-20 cSt
Kinematic Viscosity @100°C	Approx. 4 cSt
Viscosity Index	90-120 Typical
Color ASTM	L0.5 – L3 Typical
Sulfur Content	Low Sulfur Grade Available
Flash Point	Above 200°C Typical
Pour Point	Low Temperature Performance Grade Available
Application	Lubricants, Hydraulic Oils, Industrial Oils
Appearance	Clear and Bright Liquid

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FAQ Base Oil 4cST

Base Oil 4cST is a low-viscosity mineral base oil used as a primary raw material for producing lubricants, hydraulic fluids, compressor oils, and other industrial oil formulations.

Base Oil 4cST is mainly used in automotive lubricants, engine oil blending, spindle oils, hydraulic fluids, metalworking oils, compressor oils, and specialty industrial lubricant production.

Commercial types include Group I Base Oil 4cST, Group II Base Oil 4cST, Light Neutral Base Oil, and customized low-viscosity base stocks according to customer requirements.

The main advantages include excellent fluidity, good oxidation stability, low-temperature performance, consistent viscosity, high purity, and compatibility with modern lubricant additives.

Base Oil 4cST is produced through petroleum refining processes including distillation, solvent extraction, hydro-treatment, dewaxing, and finishing to achieve the required lubricant quality.

Suitable suppliers of Base Oil 4cST in Iran can be found through Irancorps, which connects international buyers with verified Iranian manufacturers and exporters of petroleum and industrial products.