I sent my tanks out and had them chromed. That was 28 years ago. So far so good. Eventually the original steel tanks will rot through. I'll let you know how they work out for me?
In order to "high temp" ceramic coat, like on headers, the item needs to be able to stand 700 F degrees.
That's around the temperature +/-, that 50/50 lead solder will melt.
The stainless tanks which are 304, will virtually last forever.
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