Base Oil Group – III

8cSt

Description:
Group III – 8 cSt is a high-viscosity synthetic-grade base oil, produced through severe hydrocracking, hydroisomerization, and hydrofinishing of premium paraffinic crude. With a kinematic viscosity of approximately 8 centistokes at 100°C and a very high viscosity index (typically ≥ 130), this base stock provides excellent thermal stability, oxidation resistance, and film strength. It is ideally suited for heavy-duty engine oils, gear oils, and industrial lubricants where durability and performance under extreme load and temperature are required.

Production Process:

• Severe Hydrocracking & Isomerization: Yields a highly saturated, stable molecular structure

• Hydrofinishing: Enhances oxidation resistance, improves clarity, and ensures consistent blend quality

• Precision Fractionation: Delivers tight viscosity control and consistent performance across batches

Key Technical Properties (Typical Values):

• Kinematic Viscosity @ 100°C: ~7.8–8.5 cSt

• Viscosity Index (VI): ≥ 130

• Flash Point (COC): >240°C

• Pour Point: -18°C to -24°C

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

• Sulfur Content: ≤ 0.03%

• Saturates: ≥ 90%

• Volatility (NOACK): Low – supports stable performance under heat

• Oxidation Stability: Excellent – suitable for long-drain and high-temperature service

Benefits:

• Superior film strength and viscosity retention under high load and temperature

• Low volatility reduces oil consumption and supports emissions control

• Excellent oxidative and thermal stability for extended drain intervals

• Strong additive response and compatibility with synthetic and semi-synthetic systems

• High purity ensures clean burning and deposit control

• Water-clear appearance for consistent, high-quality formulations

Applications:

• Heavy-Duty Engine Oils (HDEO): SAE 15W-40, 10W-40, 20W-50 formulations for diesel and commercial vehicles

• Gear & Transmission Oils: Automotive and industrial gear systems exposed to high stress and temperatures

• Compressor and Turbine Oils: Systems requiring long-term performance and thermal stability

• Grease Manufacturing: As a thick base for heavy-duty and high-temperature greases

• Marine & Railway Lubricants: Where robust base stocks are essential for extended operational reliability

Packaging Options:

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

• Custom additive blends and private-label packaging available on request

Compliance & Standards:

• Fully compliant with API Group III base oil specifications

• Suitable for formulations designed to meet API SN, SP, ACEA E7/E9, and various OEM standards

• Compatible with Group II, Group III+, PAO, and ester base stocks