COMPRESSORS OIL INFO

The correct specification for compressor pump oil can vary significantly depending on the type and model of your compressor, as well as the operating temperature.

It is always best to check the manufacturer's user manual for the exact specification and type of oil recommended for your specific compressor model.

Here are the general specifications and types commonly used:Viscosity Grades (Thickness)

Compressor oils are typically classified using two main standards: SAE and ISO VG.

• SAE Grades (Society of Automotive Engineers):
  • Most air compressors use a non-detergent oil that is SAE 20 or SAE 30 weight.
  • SAE 20 is generally recommended for use in colder operating environments.
  • SAE 30 is often better suited for moderate to warmer operating temperatures.
• ISO VG Grades (International Organisation for Standardisation Viscosity Grade):
  • Common industrial compressor oils typically range between ISO VG 32 and ISO VG 220.
  • Rotary Screw Compressors commonly require oils like ISO VG 46 (up to ISO VG 68).
  • Reciprocating (Piston) Compressors may use ISO VG 100 or higher.

Oil Type

Air compressor oil is a dedicated lubricant designed to handle the specific operational challenges of a compressor and generally does not contain detergents, unlike standard engine oil.

The three basic types of air compressor oil are:

• Mineral (Petroleum-based): A standard, cost-effective option for intermittent or moderate-condition use.
• Synthetic: Engineered for high stability, low volatility, and a uniform flow across a wide temperature range, offering improved performance and longer maintenance intervals.
  • Common synthetic types include Synthetic Hydrocarbons (PAOs), Polyol Esters (POEs), and Polyglycols (PAGs).
• Food-Grade: Required for compressors used in the food, drink, and pharmaceutical industries where incidental food contact may occur.