Pagoda SL Group
Off Topic => Other cars => Topic started by: dseretakis on June 17, 2013, 00:08:18
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Hi. My 1958 300d has a rusty gas tank. I'm planning on removing it, letting it sit in muriatic acid for a few days, then using the POR-15 gas tank sealer system. Does anyone have any advice, or would anyone do it differently?
I'm also wondering why it's even necessary to coat it once it's de-rusted. When new, these tanks were not sealed on the inside. The only thing I can think of is that the rust has thinned the metal making it more prone to perforation should some rust start again. What do you all think?
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Surely the tank was galvanized on the inside, otherwise it would have rusted in a heartbeat--days, not decades! Maybe I'm wrong though--best to ask the Adenaeur experts at MBCA.
But once rust starts anywhere the surface coating--be it galvanizing, chrome, zinc or other plating or coating is compromised. A refinish is almost a requirement, I would think--unless you want to battle the problem forever.
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But we're they really galvanized? When I peered into my pagoda tank some years ago it was bright shiny metal. It didn't appear to have the grayish galvanic coating. Then again I was peering through gas in a small dark hole so who knows!
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I had the tank of my Coupe dipped into an acid bath and I then use the POR 15 sealant inside and the paint outside. I did this 3 years ago and so far so good.