We found that Electrical breakdown in a PAO fluid results in the formation of submicron carbonaceous particles and some flammable gas which, more than likely, is hydrogen. An applied electric field generates significant streaming electrification in a PAO fluid. The Navy Oil Analysis Program procedures, which were developed in the 1980s for testing unstable Coolanol fluids, fail to test the degradation of hydrolytically stable PAO fluids currently used by the ...
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