<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">I’ve heard of putting chain in the tank while cleaning, it helps abrade the rust & crud. Only problem is if the tank has baffles in it where the chain could get through a hole in the baffle, it could get stuck over there, requiring cutting the tank to get it out. <br id="lineBreakAtBeginningOfSignature"><div dir="ltr">Pat Horne <div>We support Habitat for Humanity</div><div><br></div></div><div dir="ltr"><br>On Apr 11, 2025, at 10:14 PM, Jim Stone <1789alpine@gmail.com> wrote:<br><br></div><div dir="ltr"><meta http-equiv="content-type" content="text/html; charset=utf-8">I did the tanks on my Alpine about 20 years ago using the Bill Hirsch kit (<a href="https://www.hirschauto.com/Gas-Tank-Sealer-Repair/products/4/">https://www.hirschauto.com/Gas-Tank-Sealer-Repair/products/4/</a>) and they still look like new. (Alpine tanks were painted inside from the factory and the paint was good for about 30 years. Unfortunately…) The hardest part was cleaning the inside of the tank. Rust wasn’t as big an issue as sludge and old paint. I did just about everything I could think of, from electrolytic derusting to paint remover. All of that helped but I never got them completely clean until I used muriatic acid. There is an article on the Alpine club’s home page documenting the cleaning trials and tribulations that one member went through that you might find helpful. <a href="https://sunbeamalpine.org/2008/12/23/how-to-clean-and-seal-gas-tanks/">https://sunbeamalpine.org/2008/12/23/how-to-clean-and-seal-gas-tanks/</a><br id="lineBreakAtBeginningOfMessage"><div><br><blockquote type="cite"><div>On Apr 11, 2025, at 4:59 PM, Al Fuller <alfuller194@gmail.com> wrote:</div><br class="Apple-interchange-newline"><div><meta charset="UTF-8"><div style="caret-color: rgb(0, 0, 0); font-family: "Segoe UI"; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;">I am in the process of reviving a car that has sat for several years. The gas tank was partially full of old gas, which when pumped out brought out a lot of rust. As such, I am thinking I will be needing to clean out and restore the inside of this tank.</div><div style="caret-color: rgb(0, 0, 0); font-family: "Segoe UI"; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br></div><div id="signature_old" style="caret-color: rgb(0, 0, 0); font-family: "Segoe UI"; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; clear: both;"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr">Do any of you have experience with any of the gas tank restoration kits on the market? If so, please share your experience of using it and how it performed over time.</div><div dir="ltr"><br></div><div dir="ltr">I'm sure others will offer other opinions, such as 'just use muriatic acid', 'just use vinegar', 'just use Coca-Cola', etc... - So, I'll bite: If you have actually used something other than a commercial kit, please share those experiences, too!</div><div dir="ltr"><br></div><div dir="ltr">Thanks in advance. </div><div dir="ltr"><br></div><div dir="ltr">===========================<br>Al Fuller<br>714.335.0248 Mobile<br></div></div></div></div></div></div><div style="caret-color: rgb(0, 0, 0); font-family: "Segoe UI"; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><br></div><span style="caret-color: rgb(0, 0, 0); font-family: "Segoe UI"; font-size: 16px; 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