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<div>I did something similar but there was an unfortunate side effect. Once I was done cleaning it out and switched to gas, it somehow accelerated the rusting/corrosioin inside the tank. For ex: My fuel sending unit was pretty clean. After I was done and switched to gas, I went from gunk in the tank to rust. I pulled the fuel sender a few weeks later and it was rusting terribly. it rusted more in a month than it had for several years in a dirty gas tank. I'm not sure why that happened but it did.</div><div>So I pulled the tank back out and took it to get sealed. That is what you should do so you don't have to worry about it anymore. </div><div><br></div>
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On Tuesday, January 30, 2018, 8:50:12 PM EST, Gary McCormick via Datsun-roadsters <datsun-roadsters@autox.team.net> wrote:
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<div><div dir="ltr">Has anyone used denatured alcohol to clean the varnish out of an old gas <br></div><div dir="ltr">tank that hadn't been drained before being left to sit? I have been <br></div><div dir="ltr">using it on a motorcycle gas tank and it seems to work pretty well.<br></div><div dir="ltr"><br></div><div dir="ltr">First I sloshed some mineral spirits around in the tank, which seemed to <br></div><div dir="ltr">clean it up a bit, then I switched to denatured alcohol. After soaking <br></div><div dir="ltr">overnight with about half a quart of alcohol in the two-gallon gas tank, <br></div><div dir="ltr">the alcohol looked like Guinness when I poured it out. I've gone through <br></div><div dir="ltr">two more iterations, and it has come out cleaner and clearer each time. <br></div><div dir="ltr">Once the alcohol comes out clear, I'll dry the tank out really well with <br></div><div dir="ltr">compressed air and switch to gasoline. With any luck I'll be firing up <br></div><div dir="ltr">the little beastie before the weekend.<br></div><div dir="ltr"><br></div><div dir="ltr">Gary McCormick<br></div><div dir="ltr">1970 2000 Roadster SRL311-13291<br></div><div dir="ltr">San Jose, CA<br></div><div dir="ltr">________________________________________<br></div><div dir="ltr"><br></div><div dir="ltr"><a href="mailto:datsun-roadsters@autox.team.net" rel="nofollow" target="_blank">datsun-roadsters@autox.team.net</a><br></div><div dir="ltr"><br></div><div dir="ltr">Donate: <a href="http://www.team.net/donate.html" rel="nofollow" target="_blank">http://www.team.net/donate.html</a><br></div><div dir="ltr">Archive: <a href="http://www.team.net/archive" rel="nofollow" target="_blank">http://www.team.net/archive</a><br></div><div dir="ltr">Forums: <a href="http://www.team.net/forums" rel="nofollow" target="_blank">http://www.team.net/forums</a><br></div><div dir="ltr">Unsubscribe: <a href="http://autox.team.net/mailman/options/datsun-roadsters/joeygott@yahoo.com" rel="nofollow" target="_blank">http://autox.team.net/mailman/options/datsun-roadsters/joeygott@yahoo.com</a><br></div><div dir="ltr"><br></div><div dir="ltr"><br></div></div>
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