On my two V8 diesels I have a white residue similar that one often sees on battery posts. I've cleaned it off but it returns over winter. It can be found on the transmission fastening bolts as well as the heat exchangers holding tank. I've replaced gaskets in an attempt to stop it thinking it was saltwater leakage but it hasn't stopped it. All pencil sinks are replaced annually and they show some wear but still have considerable sink material left. Do I have a grounding issue? Thanks, Hugh

Hugh, The white residue sounds like either salt deposits, or corrosion products of aluminum. Can't be corroding iron or bronze; those would be red/brown and green. What make and model are your V-8's, and do you know the materials of the parts that are "corroding? Mark Richter, Ortona, FL on the Okeechobee Waterway Mark's Mobile Marine > > On my two V8 diesels I have a white residue similar that one often > sees on battery posts. I've cleaned it off but it returns over > winter. It can be found on the transmission fastening bolts as > well as the heat exchangers holding tank. > > I've replaced gaskets in an attempt to stop it thinking it was > saltwater leakage but it hasn't stopped it. > > All pencil sinks are replaced annually and they show some wear but still > have considerable sink material left. > prohibited.