To Bjarney, it is very common here. In Philadelphia 2 pase is all over.
To the rest thank you. I have all ready dealt with the problem. A electrical testing company is going to test the oil for PCB's among other things. They can tell if the xfmrs are failing as well. They stopped using PCB's around thirty years ago. Xfmrs were assembled using mineral oil and PCB's even in the same factory, at the same time. It was finally discovered that PCB'S are dangerous so they dumped alot of it into the Hudson River. I have discovered that even if the xfmrs have PCB's, as long as it does not exceed a limited "parts per million" it is ok, but they still need to be labled as Haz Mat, in case of an emergency, say a leak!