Just as the title says. At first I thought it was all rust. Seeing as I had gas seeping out the bottom of both bottom "lips" from what turned out to be pinholes when I stripped it to metal. So, I let the tank soak in Metal Rescue a few days rotating as I went. The MR came out looking okay with a few loose grains of something, but it wasn't black as I had expected. And the tank looked the same inside.
So does anyone have any ideas? I'm not sure if it's rust, crystalline gas (varnish), an old liner, or a combination. My next thought is to soak it in acetone for a few days and see what happens, but would appreciate any input.
Still can't add pics from my phone, so here's a link to the pics of the inside.
https://www.dropbox.com/sh/5d3c5njyotjw56x/AAA5PTXONb_nAblLHpS42uE-a?dl=0
Thanks in advance!
So does anyone have any ideas? I'm not sure if it's rust, crystalline gas (varnish), an old liner, or a combination. My next thought is to soak it in acetone for a few days and see what happens, but would appreciate any input.
Still can't add pics from my phone, so here's a link to the pics of the inside.
https://www.dropbox.com/sh/5d3c5njyotjw56x/AAA5PTXONb_nAblLHpS42uE-a?dl=0
Thanks in advance!