> Original Poster: NickandSim-at-aol-dot-com > > Hi All, > If its food grade there may be a small amount of water in it. Water > severley > degrades the dielectric properties of mineral oil, 1 part in 10000 will have > the breakdown voltage. > > Nick Field This is the best reason to buy real insulating oil, seeing as it costs the same when purchased in quantities >= 5gallons.