> I have an external corrosion problem on my ferrous-steel, diesel-fuel > tanks. I believe the source of the problem has been eliminated. The tanks > are, of course, in a relatively inaccessable area. ><snip> > Mike > Smelling Roses > Albin 43 Hi all, Mike brought up a problem that is worthy of all of us to check. I strongly urge anyone who has steel diesel tanks to check them right now. Check the top of the tank where the filler hose enters the tank. Sure it may be hard to get at, but do it. Use a flashlight, wire brush, and mirror if necessary. What happens is water leaks past the filler cap in the deck, runs down the filler hose and accumulates on top of the tank(s). The resulting rust, ......well, you get the picture. I had to replace my tanks a couple of years ago right after the pre-purchase surveyor missed this critical item. Cost? Over $6,000. Cheers, Sandy and Dawna Floe M/V Sea Eagle Puget Sound