I had a 195555 175 Parilla that had been sitting for probably 40 years.
The gas inside had turned to varnish and then shellac it was that old.
The process took me about a week. But left me with a tank that looked absolutley like new steel on the inside.
If you were more diligent with sloching the mixture inside it might be quicker.
Drop some really old rusty bolts into a gas jar and experiment with them if you like.
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"I know only too well the evil that I propose. But my inclinations get the better of me."
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