Subject: Re: [Healeys] Gas / fuel tank sealant
> Kees wrote: "Most if not of the rust can be removed that way."
>
> .. or use a 15% solution of phosphoric acid. I buy this locally from a
> lab suppliers and use it a lot for de-rusting parts where cleanliness is
> paramount - fuel tanks included. However, the bare metal will "flash
> rust" pretty quick as the acid drives out all moisture as well. Use
> common sense, rubber gloves etc, although it is not a very bad one to use.
> Also dispose of it responsibly at a hazardous waste centre. It is great
> for re-rusting nuts and bolts, but be fore-warned that if they are cadmium
> plated, it will strip the cad. It does not seem to affect zinc plated
> fasteners, which is what the fasteners on at least the 6 cyl Healeys all
> have.
>
> Lastly, to add my 2 cents, I have heard good things about the Por-15 that
> others have recommended as a fuel tank sealer, although I have never used
> it. Another one that came very highly recommended from someone whose
> judgment I trust is a Yamaha product specifically for cleaning, etching
> and sealing fuel tanks. I have not used it either, but have bought two
> kits in anticipation of two tanks that I need to do in the near future.
> The part number is ACC-FUELT-CD-KT. I bought mine from a Yamaha dealer in
> the US - it is unavailable in Canada and I recall it was about $15 for the
> kit.
>
> One I would stay away from is KREEM tank sealer. I used this many years
> ago and it stood up well until about when they started introducing Ethanol
> to the fuel. I am not saying the Ethanol was the problem, there could
> have been other additives added at the same time. The sealer has gone
> very soft and it is starting to separate from the tank. I am
> anticipating an unholy mess in the near future. The solvent for it is
> methyl-ethyl-ketone (MEK) which is one really nasty chemical and is part
> of the application procedure - just don't buy it!
>
> cheers,
>
> Mirek
> '60 BT7
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