Base Oil PAO4

Product Overview

PAO4 (Polyalphaolefin 4) is a high-quality advanced synthetic base oil, classified as Group III+ or Group IV. Produced via α-olefin polymerization, it offers exceptional purity, thermal stability, and viscosity properties, ranking among the best synthetic oils globally.

Compared to conventional mineral oils, PAO4 performs exceptionally well under extreme heat and severe cold, making it ideal for high-performance industrial and engine lubricants.

Key Technical Properties (ASTM Standards)

Appearance: Bright & clear

Color: <0.5 (ASTM D1500) – very high purity

Density at 15°C: ~0.819 kg/L – lightweight and pure

Viscosity at 40°C: ~17.4 mm²/s

Viscosity at 100°C: ~3.9 mm²/s

Viscosity Index (VI): 124 – good temperature stability

Pour Point: -68°C – excellent low-temperature flow

Flash Point: 222°C – safe at high temperatures

Water Content: 11 ppm – high purity and oxidation resistance

Noack Volatility: 13.2% – controlled high-temperature evaporation

Advantages & Strengths

• High thermal and oxidative stability – suitable for high-temperature applications
• Extremely low pour point – reliable performance below zero with easy starts
• Excellent compatibility with additives – can be combined with anti-wear, antioxidant, and corrosion inhibitors
• High cleanliness and purity – free from sulfur and aromatics, environmentally friendly
• Lightweight formulation for better fuel efficiency – low density and smooth flow

Comparison with Other PAOs

Compared to PAO6, PAO4 has lower viscosity and better low-temperature flow, while PAO6 is suited for heavier thermal applications. PAO4 is ideal for lubricants requiring a balance between cold performance and thermal stability.

Recommended Applications

• Modern gasoline and diesel engine oils
• Automotive and industrial gear lubricants
• Turbine, compressor, and hydraulic oils
• Base for semi-synthetic and fully synthetic oils
• Light industrial greases and precision lubricants

Group III Base Oil Applications

1. High Performance Engine Oils – for modern engines (API SN, SP, ACEA C3), turbocharged and fuel-efficient engines, cost-effective alternative to PAO oils.
2. Gear Oils – automotive and industrial, anti-wear and high thermal stability.
3. Specialty Industrial Lubricants – hydraulic, turbine, compressor, and heat transfer fluids for high-temperature/high-pressure conditions.
4. Semi- and Fully Synthetic Oils – base for blending with additives; lower-cost alternative to PAO-based formulations.
5. Specialty Products – synthetic greases, bicycle lubricants, precision instruments, specialized medical equipment, eco-friendly lubricants, and some automotive care products.