FTM-3463 (FED-STD-791 Method 3463.2) Stability of Grease in Hot Water Immersion
Greases in marine, automotive and industrial applications may be exposed to water sprays, wash cycles, and other wet environments. This may cause the grease to become emulsified, leach into the water, or separate from its placement on the machine. These processes may be accelerated if the water or the grease are hot due to normal operating conditions or problems in the system. This test determines if a grease will suffer unacceptable emulsification, separation or degradation due to exposure in boiling water.
A quantity of grease is added to boiling water. Any observed water cloudiness or grease emulsification, dissolution, or disintegration is reported.