[AT] Phosporic acid and cleaning a gas tank
Kyle Sands
willys_46 at mail.com
Sun Jul 17 19:52:35 PDT 2005
Hi Ron - don't be hard on yourself. I'll take all the advice I can get :-) I had just heard that using phosphoric acid would protect the metal for quite some time so that the tank wouldn't need to be coated with some kind of a liner before use. In other words, you could let it sit for awhile before using it. The rust converter products I don't think would work so well in this application because you can't control where the product is applied. I had thought about just dropping in some 30wt oil and letting that sit in there until the tank is ready to get back into action.
Kyle
> Kyle,
> I have used Metal Prep, a DuPont product, and similar acids to
> remove rust and prepare ferrous metal pieces for painting. Flush
> with water, forced air dry and paint immediately. If left
> unprotected for very long, rust will form as things are really
> clean. Maybe you are thinking of parkerizing, which is nothing
> more than black colored rust, I think. WWII gun barrels. I
> believe that process takes heat, though.
> I once used some product called rust converter or something on an
> old rusty Ford car. You applied it on the rust and it turned the
> rust black. Supposedly you could then paint the part and rust
> would not reappear. It seemed to work for several years. I do not
> think any of this is what you were trying to accomplish though.
> Clean that tank again and slosh it with oil. That will hold it
> until you start using it for gas again. Not much help, am I?
>
> Ron Cook
> Salix, IA
>
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