Original poster: "G by way of Terry Fritz <twftesla-at-qwest-dot-net>" <bog-at-cinci.rr-dot-com> Hello List, Has anyone here heard of G.E. "Transil" oil? It is in an G.E. xfmr commissioned in 1977. Is this silicone as the name seems to suggest? I would like to determine its PCB status. Thanks, Gregory ps- This is not a medical xfmr.