The PuroLube series of compressor fluids are formulated with the compressor’s design and operating environment in mind. Whether you have oil-flooded rotary screws or oil-free centrifugals, and regardless whether they operate in a “normal” cool, clean and dry environment or a hot, humid and acid-gas environment, we have the right oil for you. PuroLube compressor fluids and additive replenishing concentrates are formulated with a synergistic blend of premium base stocks and additive technologies designed to outperform the OEM fluids and deliver maximum protection, service life and economy for you and your compressors.



PuroLube Extended Life
Compressor Fluid

For “normal” applications

Fluid Metrics’ PuroLube improves upon the OEMs’ outdated formulations using advanced, cutting‐edge additive technologies that deliver superior stability and protection even under the harshest conditions. Beginning with the best fluid, and maintaining it with the best available technologies (COP & Additives), gives compressor users the absolute lowest fluid life‐cycle costs, and the ultimate in economy and compressor reliability.


Safety Data Sheet


PuroLube Xtend
Additive Concentrate

For use with PuroLube PLUS compressor maintenance system – PuroLube + COP + XTEND Additive

Critical additives naturally deplete while in service which leads to reduced fluid service life. Specially formulated additives can be added to maintain fluid performance, increase the oil’s resistance to oxidation and acid gas contamination, neutralize harmful acids, improve corrosion protection, and extend oil change intervals.

PuroLube XD

PuroLube XD is a premium, full-synthetic Polyolester (POE) blend with an advanced additive system specially formulated to resist absorbing acids and is proven to deliver longer service life than other compressor fluids when operating in acid-gas environments. PuroLube XD provides outstanding thermal and oxidation stability and corrosion protection enabling it to exceed 10,000 hours service life in normal operating environments.


Technical Data


Superior to Mineral Oils and PAOs Superior to Mineral Oils and PAOs

Eliminates Deposit Formation Eliminates Deposit Formation

Extends Fluid Drain Intervals Extends Fluid Drain Intervals

Maximizes Bearing Life Maximizes Bearing Life


Lowers Energy Consumption Lowers Energy Consumption

Improves Heat Transfer Improves Heat Transfer

High viscosity index for superior performance High viscosity index for superior performance

100% compatible with IR’s Techtrol Gold™ 100% compatible with IR’s Techtrol Gold™


PuroLube TurboGold is an advanced blend of premium Polyoxyalkylene glycol (PAG) and Pentaerythritolester (POE) synthetic base stocks with advanced inhibitors, specially formulated for high speed centrifugal compressors. The result of more than 25 years experience formulating OEM compressor fluids, PuroLube delivers unsurpassed oxidative stability and deposit control ‐ especially critical in compressors with fixed geometry bearings, like IR’s CentacTM and others. PuroLube meets or exceeds OEM lubricant specifications, making it an excellent, cost effective pour‐in replacement for IR’s Techtrol Gold™, providing centrifugal compressor users exceptional performance and value!


Technical Data Safety Data Sheet

About us

Fluid Metrics’ technologies are utilized and endorsed by many of the world’s largest compressor users, and are widely recognized as the best practice in rotary screw air compressor maintenance.

Fluid Metrics, LLC

4514 Chamblee Dunwoody Rd. #252

Dunwoody , GA 30338

Phone: (770) 393-8636

Fax: (770) 393-8631

Email: info@fluidmetrics.com

Viscosity Index ASTM D2270 153
Viscosity, centistokes – cSt
@ 0° F / ‐17.8° C ASTM D445 690 cSt
@ 100° F / 37.8° C ASTM D445 26.9 cSt
@ 104° F / 40° C ASTM D445 24.9 cSt
@ 210° F / 98.9° C ASTM D445 5.2 cSt
@ 212° F / 100° C ASTM D445 5.3 cSt
Pour Point, ° F / ° C ASTM D97 ‐40 / ‐40
Flash Point, (COC) ° F / ° C ASTM D92 470 / 243
Flash Point, (PMCC) ° F / ° C ASTM D93 410 / 210
Copper Strip Corrosion, 3 hrs. @ 212° F / 100° C ASTM D130 1B
Ferrous Metal Corrosion, Rust Test
Distilled Water ASTM D665A Pass
Synthetic Sea Water ASTM D665B Pass
Foam Tendency (Sequence I, II, III) ASTM D892 0 (Nil)
Density, g/cc @ 25° C ASTM D941 0.98
Total Acid Number (TAN), mg KOH/g ASTM D664 0.18
pH Dow Method 7.9

Viscosity – cSt @ 40°C ASTM D445 44.4
Viscosity – cSt @ 100°C ASTM D445 7.3
Viscosity Index ASTM D2270 126
Pour Point – °F / °C ASTM D97 -58 / -50
Flash Point – °F / °C ASTM D92 501 / 261
Demulsibility ASTM D1401 Excellent
Foaming Sequences I, II, III ASTM D892 Nil
Specific Gravity ASTM D1298 0.89
Properties subject to change