Ok, here is what worked for me. Bought some Bio-Bilge from a chemical company here in Kemah
. It is designed for cleaning
bilges. It claims to be non-toxic and environmentally safe, but I called the chemist and spoke with him. When I asked if it was safe to use his product in a water
tank, he asked, " Got some diesel
in your water
tank did you?" I said yes, and he told me he has had many people use his product to emulsify the diesel
in a water tank. He said to drain the tank and take the water to an oil
recycle station. Put 7oz of the Bio-Bilge in the tank and fill it with fresh water. Slosh it around as much as possible. Drain again and re-fill with fresh water. Repeat until all traces of the Bio-Bilge are gone (it tastes a bit soapy). For me that was 4 flushes. Now there is no hint of diesel smell in the water and the water actually tastes better than my untreated starboard tank. I am a satisfied customer.