Oxidative and hydrolytic stability
The Turbine Oil Oxidation Stability Test (ASTM D943 and usually called TOST) is used to evaluate the oxidative stability of various industrial lubricants in the presence of water. We used this test to compare two ISO VG 46 compressor formulations. In one formulation, we blended a conventional PAO base stock, a polyol ester and an additive. In the other formulation, we replaced the ester with Synesstic 5 AN. In the test, Synesstic 5 AN improved oxidative and hydrolytic stability, offering potential to extend compressor oil lifetime.
Sludge reduction
Using a Cincinnati Milacron test, we compared a PAO base oil reference with a PAO blended with Synesstic AN 5 and a PAO blended with AN 12. Results demonstrate that the Synesstic AN base stocks increase overall blend solubility and cleanliness.