The purpose of the Thermal Stability test is define the thermal stability of a lubricant, a Thermo-Gravimetric Analyser (TGA) is used. The lubricant is exposed to the required test temperature and held there for 24 hours. A plot of weight loss vs time is produced.
Nye’s thermal stability method:
-Ramp to test temperature and hold for 24 hours
-Plot weight loss vs. time