before using the por15 products on a very rusty 5 gallon Honda generator tank i researched the benefits of reversing the rust through electrolysis.

using a solution of washing soda in the tank with an electrode suspended in it i hooked a battery charger to both the tank and the electrode. within a day or two the tank was ready for the por15 process and much cleaner than i could have gotten it using the chain method only.

do a google seach for 'rust removal, electrolysis' and you'll get results like this http://www.stovebolt.com/techtips/rust/electrolytic_derusting.htm.

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