Introduction to Polyalphaolefin (PAO)

Polyalphaolefin (PAO) oils are stable, lubricious fluids that are compatible with most plastics and elastomers. PAO oils are considered a great replacement for petroleum based products, are used in countless applications and industry sectors. PAO summary:

Temperature range of -60 to 125°C
Relatively low cost
Excellent wear reduction
Good plastic/elastomer compatibility (read our compatibility article for more guidance)
Broad temperature range
Viscosity Index 125 to 145

There are three basic types of PAO Oils:

Low viscosity PAO oils which are 2 – 100 cSt at 100°C
High viscosity PAO oils which are 40 – 100 cSt at 100°C
High viscosity index PAO oils which are 150 – 1000 cSt at 100°C

Keep in mind that if a Polyalphaolefin is used as the base oil for a grease, the thickener and additives also used in the formula will have an influence on the final characteristics and performance of the finished grease/lubricant.

Take a look at our typical thickener systems characteristics used to make a base oil into a grease.

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