AMSOIL ISO 32 100% SYNTHETIC COMPRESSOR OIL

AMSOIL ISO 32 100% Synthetic Compressor Oil delivers extended drain intervals up to 8,000 hours while protecting rotary screw, rotary vane, centrifugal and reciprocating compressors from varnish, wear and oxidation. It is built for facilities and shops that run compressors hard and need a lubricant that outlasts conventional petroleum oils by a wide margin.

Compressors generate significant heat during continuous operation, and that heat breaks down conventional oils quickly. The result is varnish deposits on internal components, acid formation, increased friction and unplanned downtime. Condensation compounds the problem by introducing water into the oil, promoting rust and corrosion. An ISO 32 synthetic compressor oil formulated to handle these conditions pays for itself in reduced maintenance, fewer oil changes and longer equipment life.

RESISTS VARNISH AND CARBON DEPOSITS AT HIGH DISCHARGE TEMPERATURES
Varnish buildup is one of the most common causes of compressor inefficiency and mechanical failure. AMSOIL tested PC Series Synthetic Compressor Oil against a leading competitor in industrial rotary screw compressors operating at 200°F oil discharge temperature, evaluated using the Membrane Patch Colorimetry Test (ASTM D7843). The competitor oil reached critical varnish potential after only 6,228 hours. AMSOIL PC Series maintained ultra-low varnish potential through the full 8,000-hour test interval. That difference translates directly to cleaner compressor internals and fewer unscheduled shutdowns.

REDUCES OIL CONSUMPTION BY 35%
Frequent top-offs waste both time and money, especially in multi-compressor shops or industrial facilities. In an 8,000-hour side-by-side comparison in an industrial rotary screw compressor under identical operating conditions, AMSOIL PC Series Synthetic Compressor Oil required 35% less top-off oil than the leading competitor synthetic. Superior foam resistance and air-release properties keep the oil where it belongs instead of being carried out through the discharge.

CONTROLS FOAM AND REDUCES WEAR
Foam in compressor oil accelerates oxidation, generates excess heat and reduces the oil film protecting critical surfaces. AMSOIL PC Series Oil is formulated with anti-foam additives and achieves 0/0 foam tendency and stability across all three sequences of ASTM D892 testing. It is also anti-wear fortified, recording a 0.40 mm wear scar in Four-Ball Wear testing (ASTM D4172, 40 kg, 1200 rpm, 75°C, 1 hour). Many compressor oils skip anti-wear additives entirely.

SEPARATES FROM WATER QUICKLY FOR EASIER MAINTENANCE
Water contamination from condensation creates emulsions that promote rust, corrosion and acid buildup. AMSOIL PC Series Oil is hydrolytically stable and separates cleanly from water. In ASTM D1401 demulsibility testing, it achieved complete 40/40/0 separation in just 15 minutes. It also passes both fresh water and synthetic sea water rust tests (ASTM D665 A and B), keeping compressor internals protected even in humid environments.

HIGH FLASH POINT FOR IMPROVED FIRE SAFETY
Compressor environments present real ignition risks, particularly in reciprocating units where carbon deposits can create hot spots. AMSOIL PC Series ISO 32 has a flash point of 252°C (486°F) and a fire point of 272°C (522°F). Its ashless formulation produces very low carbon residue, reducing the formation of ignition-promoting deposits. While it provides improved fire safety margins over petroleum oils, it is not classified as a fire-resistant fluid.

SPECIFICATIONS AND COMPATIBILITY
AMSOIL PC Series ISO 32 Synthetic Compressor Oil is classified as ISO VG 32 (SAE 10W equivalent). It is compatible with PAO-based, ester-based and petroleum-based compressor oils. It is not compatible with polyalkylene glycol (PAG) or silicone-based compressor oils. It is also not recommended for breathing air compressors or refrigeration compressors. Compatible elastomers include Viton, Buna N, polyacrylate, TFE/P and polyurethane. Not recommended for use with polycarbonate plastic (unless metal covered), PVC plastic, or butyl, ethylene-propylene or SBR rubber.

SERVICE LIFE
In rotary compressor applications (rotary screw, rotary vane, centrifugal), AMSOIL PC Series ISO 32 provides drain intervals up to 8,000 hours at 200°F discharge temperature under normal operating conditions. Drain intervals depend on operating conditions and maintenance practices. Oil analysis monitoring is recommended to confirm drain interval suitability for your specific application. For best results when converting from another compressor oil, flush the system of old oil, remove any existing carbon deposits per the compressor manufacturer's recommendations and change all filters before installing PC Series Oil.