Issue link: http://read.dmtmag.com/i/713025
Castrol Isolube was field tested at two national heavy‑duty construction companies. The field test was designed to test the following criteria: oxidation resistance, wear protection, low temperature performance and seal compatibility. In compressor units at one of the sites, several candidate fluids were tested. Castrol Isolube was pitted against a commercial mineral fluid and a commercial synthetic (PAO) fluid in most of these tests. R PVOT OX IDAT ION L IF E T E S T RPVOT Oxidation Life Test ASTM 2272 0 500 1,000 1,500 Minutes to Oxidation 835 hours 641 hours 435 hours 141 hours 8 hours 0 hrs 0 hrs Castrol Isolube Synthetic Oil (New) Mineral Oil (New) new oil In the RPVOT Oxidation Life Test, a fluid is heated in pure compressed oxygen to determine how long it would take for the fluid to fail. In the chart below, Castrol Isolube was tested at field test intervals from 8 to 835 hours. Even after 835 hours of use, Castrol Isolube's minutes to oxidation still exceeded that of a new commercial mineral and synthetic fluid. A S T M D 2 2 7 2 (ROTAT ING B OMB) PROCE DUR E Oxidation Resistance ASTM D 2272 (Rotating Bomb) Procedure 0 500 1,000 1,500 Minutes to Oxidation 2,500 2,000 1,500 1,000 500 0 Minutes to Failure Mineral Oil Commercial Synthetic PAO Diester Experimental 1 Experimental 2 Castrol Isolube In another test for oxidation resistance, Castrol Isolube outperformed several test fluids, showing exceptionally long fluid life. B A C K N E X T A1 2 L A B C H E C K E N G i N E T R A N S M i S S i O N A X L E F i F T H W H E E L & G R E A S E S S U P E R C L E A N H O M E H Y D R A U L i C F L U i D S C A S T R O L i S O L U B E F i E L D T E S T R E S U LT S