BlueSky Alto Syn HP 68 is a synthetic lubricant providing the highest performance in industrial rotary screw air compressor applications. The Alto line of lubricants from BlueSky Lubricants are high performance air compressor lubricating oils primarily intended for the lubrication of severe duty reciprocating, rotary screw and vane air compressors. The "Syn HP" series are their highest performing, Polyolester synthetic lubricants for severe duty rotary screw air compressors in refrigeration applications due to their compatibility with the refrigerants R-134a, R-410A and R-12. POE's are also compatible with most OEM original lubricants. 68 represents the thickness of the oil which is an International Standards Organization Viscosity Grade (ISO VG) 68.
If you want to learn more about these types of lubricants, click on our articles below.