Base Oil Group – III

4cSt

Description:
Group III – 4 cSt is a light viscosity, synthetic-grade base oil manufactured through severe hydrocracking and hydroisomerization of high-quality paraffinic crude. With a viscosity of approximately 4 centistokes at 100°C, this ultra-pure base stock combines high viscosity index, exceptional oxidative stability, and low volatility, making it ideal for modern passenger car motor oils, transmission fluids, and low-viscosity industrial lubricants. Its excellent cold-flow behavior and thermal resistance support demanding formulations that meet or exceed the latest API SP, ILSAC GF-6, and OEM performance standards.

Production Process:

• Severe Hydrocracking & Hydroisomerization: Ensures high saturate content and removes sulfur and aromatics

• Hydrofinishing: Refines color, clarity, and long-term stability

• Precise Fractionation: Guarantees consistent viscosity control for blending accuracy

Key Technical Properties (Typical Values):

• Kinematic Viscosity @ 100°C: ~3.8–4.3 cSt

• Viscosity Index (VI): ≥ 120 (often 125–135)

• Flash Point (COC): >210°C

• Pour Point: -24°C to -30°C

• Color (ASTM D1500): L0.5 (water-clear)

• Sulfur Content: ≤ 0.03%

• Saturates: ≥ 90%

• Oxidation Stability: Excellent

• Volatility (NOACK): Very low – suitable for low-oil-consumption formulations

Benefits:

• Ideal for low- and mid-viscosity engine oil grades (e.g., SAE 0W-20, 5W-30)

• Supports fuel economy and reduced emissions in high-efficiency engines

• Excellent thermal and oxidative stability for extended drain intervals

• Superior cold flow performance for reliable engine protection in cold climates

• High chemical purity ensures excellent additive compatibility

• Water-clear color and consistent quality for synthetic and semi-synthetic formulations

Applications:

• Passenger Car Motor Oils (PCMO): For gasoline and hybrid vehicles, including full synthetic formulations

• Heavy-Duty Engine Oils (HDEO): As a low-viscosity blending stock in multigrade oils

• Automatic Transmission Fluids (ATF): Where shear stability and oxidation resistance are essential

• Industrial Lubricants: Hydraulic, compressor, and circulating oils operating under variable temperatures

• Grease Production: Where a light, clean base oil is required

• OEM-Approved Lubricants: Blending base for lubricants meeting ACEA, API, and global emission standards

Packaging Options:

• Available in bulk, IBCs (totes), 200-liter drums, and flexitanks

• Custom formulation support and private-label packaging options offered

Compliance & Standards:

• Meets all API Group III base oil specifications

• Suitable for use in lubricants formulated to meet API SN, SP, ILSAC GF-6/7, ACEA C5, and major OEM approvals

• Fully compatible with Group II, Group III+, PAO, and synthetic esters