Mineral-Based Compressor Oils are petroleum lubricants that contain a low level of ashless (zinc-free) antiwear additive for mild wear protection and are formulated from quality, natural oil bases. These types of oils are commonly employed in circulation systems, centrifugal air compressors, geared turbines, lightly loaded gearboxes, and many other industrial applications.

Compressor oils with mineral bases that are deemed ISO VG 32 oils have a kinematic midpoint viscosity of 32 mm²/s (or cSt).