Polyalphaolefins (PAO)

Conventional Group I and Group II mineral base oils often fall short when formulations demand wide temperature service, extended drain intervals, and consistent batch-to-batch chemistry. As a domestic polyalphaolefins manufacturer based in Texas, RB Products manufactures and supplies a complete line of Group IV synthetic base oils engineered for those extreme service conditions. Our polyalphaolefins are the oligomerization product of decene and/or dodecene alpha-olefins, producing a uniform, branched paraffinic structure free of sulfur, nitrogen, and aromatic impurities.

Polyalphaolefins (PAO) represent approximately 1 – 2% of the global base oil market today, but their share is expanding as formulators reformulate from traditional paraffinic stocks to capture better pour point, NOACK volatility, color consistency, viscosity index, and oxidative stability. RB Products supports that shift with both low- and high-viscosity grades, technical documentation, and reliable supply to domestic and international clients.

Properties of Polyalphaolefins

The controlled synthesis of PAO produces measurable performance advantages that conventional base oils cannot match:

• High viscosity index (VI) for stable performance across a broad temperature service range

• Excellent low-temperature fluidity with very low pour points

• Superior thermal and oxidative stability for extended service life

• Low NOACK volatility to minimize oil consumption and emissions

• High shear stability and film strength under load

• Compatibility with mineral oils, esters, and standard additive packages

• Consistent color, purity, and batch-to-batch quality

• Reduced deposit formation in engines and industrial equipment

These properties are why PAO is the preferred base fluid for fully synthetic passenger car motor oils, industrial gear oils, compressor fluids, greases, and high-performance lubricants.

Types of Polyalphaolefins

RB Products manufactures both ends of the PAO viscosity spectrum, measured at 100 °C by the D445 ASTM method. Each category serves distinct formulation requirements.

Low-Viscosity PAO

Low-viscosity PAO is offered in grades ranging from 2 cSt to 10 cSt at 100 °C, including standard and high-viscosity index (HVI) variants. These grades serve as the primary base fluid in passenger car motor oils, low-temperature hydraulic fluids, drilling fluids, aerosol formulations, and cosmetic emollients where low pour point and high VI are essential.

High-Viscosity PAO

High-viscosity PAO covers grades from 40 cSt to 100 cSt at 100 °C. These extreme service Group IV synthetic base oils and synthetic viscosity improvers deliver the shear stability, film strength, and load-carrying performance required in heavy industrial gear oils, compressor oils, synthetic greases, and adhesive formulations.

Polyalphaolefin Applications

PAO base stocks support formulations across a wide range of industrial and consumer markets. Common applications include:

• Passenger car motor oils and heavy-duty engine oils

• Industrial, automotive, and wind turbine gear oils

• Hydraulic fluids and compressor oils

• Synthetic greases and high-temperature lubricants

• Two-stroke and smokeless engine oils

• Metal working fluids, including cutting, grinding, and quench oils

• Adhesives and sealants

• Cosmetic emollients for creams, sunscreens, and lotions

• Drilling fluids and oilfield specialty products

• Refrigeration and heat transfer fluids

Whether the application requires a 2 cSt low-viscosity fluid for an aerosol or a 100 cSt grade for an extreme service gear oil, RB Products supplies the right PAO grade backed by current TDS and SDS documentation.

Why Choose PAO Over Conventional Base Oils?

Group I and Group II mineral oils remain widely used for price-sensitive applications, but they cannot match the performance ceiling of synthetic PAO. Passenger car motor oils formulated with polyalphaolefins show improved temperature service range, lubricity, shear stability, and reduced deposit formation, leading to increased life span of both the oil and the engine. PAO also extends drain intervals, which reduces oil waste and lowers total cost of ownership.

For lubricant and grease manufacturers, reformulating to PAO unlocks compliance with new emission standards and gas mileage requirements without sacrificing protection. Compared to other synthetic base fluids, PAO offers a uniquely balanced combination of thermal stability, additive solubility, and seal compatibility, supported by RB Products' in-house quality assurance program.

Frequently Asked Questions