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PC Series Compressor Oil (PCI) ISO 46, SAE 20

 Synthetic Compressor Oil - ISO 46, SAE 20 (PCI)
Product Code: PCI • Brand: AMSOIL

The correct viscosity grade compressor oil is recommended for use in rotary screw, rotary vane, reciprocating and other compressor applications. Compatible with PAO, ester- and petroleum-based compressor oils. Not compatible with glycol- or silicone-based compressor oils.

Package sizes include:

1-Quart Bottle
5-Gallon Pail
30-Gallon Drum
55-Gallon Drum

See Pricing or Place an Order
MSDS Data Sheet

Product Details

Product Applications

AMSOIL PC Series Oil in the appropriate viscosity is recommended for use in single and multistage rotary screw, vane, centrifugal and reciprocating compressor crankcases and cylinders, vacuum pumps and other applications such as gears, bearings, blowers, pumps and handheld pneumatic tools. In compressor applications, drain intervals of 8,000 hours or more can be expected under normal operation. Drain intervals are subject to operating conditions and maintenance practices. Monitoring by oil analysis is recommended. For best performance when converting to AMSOIL PC Series Oil, it is recommended the compressor be drained of the old fluid prior to the installation of PC Series Oil. If carbon deposits are present on the internal components, it is recommended they be removed following the compressor manufacturer recommendations.

Product Description

The correct viscosity grade compressor oil is recommended for use in rotary screw, rotary vane, reciprocating and other compressor applications. Compatible with PAO, ester- and petroleum-based compressor oils. Not compatible with glycol- or silicone-based compressor oils.

Improves Compressor Efficiency
A MSOIL PC Series Oil has low friction properties and resists viscosity increase from oxidation. It helps improve operating efficiency and saves money on electrical energy consumption.

Controls Foam and Reduces Wear
AMSOIL PC Series Oil contains anti-foam additives and, unlike some other compressor oils, is anti-wear fortified. Good foam control reduces heat, oxidation and wear. High contact regions are protected against wear for increased compressor life and efficiency.

Resists Water Contamination
Water from condensation builds up in compressors and can cause unwanted oil/water emulsions, environmental discharge hazards and rust. AMSOIL PC Series Oil is hydrolytically stable. It resists acid formation, readily separates from water and is anti-rust fortified. Water can be easily drained for simplified environmental discharge and increased oil life.

Resists Heat and Oxidation
AMSOIL PC Series Oil combines the inherent stability of premium synthetic base oils with specialized anti-oxidant additives to resist varnish, carbon and acid formation. It is formulated to protect compressors better and last longer in service than petroleum oils, especially during hot operating conditions.

Safety Advantage
AMSOIL PC Series Oil is an ashless, high-flash-point formulation with very low carbon-forming tendencies that minimizes the incidence of ignition-promoting hot spots. While PC Series Oil can provide improved fire safety, it cannot be considered non-flammable.


• Nitrogen • Hydrogen • Helium • Carbon Monoxide
• Carbon Dioxide (dry) • Ethylene • Methane • Propane
• Butane • Propylene • Butylenes • Natural Gas
• Benzene • Butadiene • Furnace (crack gas)
• Hydrogen Sulfide (dry) • Synthetic Gas
• Sulfur Dioxide.
• Epoxy • Oil Resistant Alkyd • Acrylic Enamel.
• Acetal (Delrin) • ABS • Phenolic • Polyamide-imide
• Polyamide (Nylon)
• Polycarbonate (metal covered only)
• Polyester • Polyetherimide (Nylon) • Polyimide
• Polyphenylene oxide • Polystyrene • Polysulfone
• PTFE (Teflon) • Terephthalate.
• Fluoroelastomer (Viton) • Nitrile (Buna N) • Polyacrylate
• TFE/P • Poly Urethane.
Note: Not recommended for “breathing air” or refrigeration compressors. Not recommended for use with polycarbonate plastic that is not metal covered, PVC plastic and butyl, ethylene-propylene or SBR rubber. PC Series Oils are Not Compatible with polyalkylene glycol or silicone oils.


This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Material Safety Data Sheet (MSDS).

Click here to view the MSDS Data Sheet for AMSOIL PCI.

Keep out of the reach of children. Don't pollute. Return used oil to collection centers.

Technical Data

Typical Technical Properties
Synthetic PC Series Compressor OilsSAE 10W
SAE 20
SAE 30
SAE 40
ISO VG - ASTM D-2422324668100
VK 100°C - ASTM D-4456.17.310.513.4
VK 40°C - ASTM D-44532.843.068.1100.2
Viscosity Index - ASTM D-2270135132145133
SPGR - ASTM D-12980.83930.84280.85240.8550
Density - ASTM D-12986.9897.0187.0987.119
Flash Point °C (°F) - ASTM D-92260 (500)252 (486)250 (482)262 (504)
Fire Point °C (°F) - ASTM D-92274 (525)276 (529)276 (529)274 (525)
Pour Point °C (°F) - ASTM D-97-53 (-63)-47 (-53)-40 (-40)-44 (-47)
Four-Ball Wear Test - ASTM D-4172 (40 kg, 1200 rpm, 75° C, 60 min.)0.450.450.450.45
Copper Strip Corrosion Test - ASTM D-1301A1A1A1A
Rust Test - ASTM D665 A & B Fresh Water and Synthetic Sea WaterPassPassPassPass
Foam, ml (ASTM D-892) Sequence I, II, III Test End - and After 10 minutes settling0/0/00/0/00/0/00/0/0
Demulsibility ASTM D-1401 [oil/water/cuff (minutes)]40/40/0 (10)40/40/0 (10)40/40/0 (5)40/40/0 (10)

 Synthetic Compressor Oil - ISO 46, SAE 20 (PCI)

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Product Name: PC Series Compressor Oil (PCI) ISO 46, SAE 20
Current Rating: 4 out of 5 stars
Votes & Reviews: 5 vote(s) and 1 user reviews.

Reviewed by fishnguy: space

AMSOIL ISO 46 Compressor Oil Seems to Work OK in my Compressor, in the Winter.

I use this oil in my compressor in the winter. I use my compressor in my unheated shop and the light oil seems to allow the compressor to start up easier in the cold.

Item Reviewed: PC Series Compressor Oil (PCI) ISO 46, SAE 20
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