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Hi, Stevenal, You're right. It is a pretty good trick to get a highly biodegradable oil that will stand up to the heat and stress inside a transformer - for decades, even! The bugs are really microorganisms that live in soil. Different types of soil and different environments have different...

Hi, Stevenal, Oxidation and biodegradation are two completely different things. They have different mechanisms and pathways. The oxidation breakdown that I spoke of occurs during service, is a chemical reaction, and is a function of heat and the availability of oxygen. Oils break down to...

First, a disclaimer. I own a company that makes dielectric fluids, including vegetable oil fluids, and am a competitor of Cooper's (some of you probably know me). The good thing about vegetable oils is their high firepoint and high rates of biodegradation. They are all good dielectrics, and...