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Old 02-19-2011, 01:39 PM
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Fuel tank cleaning

Just wanted to hear about some past experiences....Workin on my 68 chrysler newport custom, pulled the gas tank and dumped the old stuff out. Looks like theres some varnish but not real sure. Been lookin online debating on whether to try and use a tank cleaning kit or spring for the replacement. I found a couple companies like por-15 and eastwood that make complete kits to clean a tank but Ive also found plenty of bad reviews on this stuff. Price difference is under $100 depending on the kit and over $300 for a new tank. Any and all advice and testimony welcome.
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Old 02-19-2011, 01:58 PM
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I have used the kit from Eastwood on four tanks and have very good results.It takes time but worth it in the long run.If you just need a good cleaning you can flush it with a mix or very hot water and muratic acid.
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Old 02-19-2011, 08:02 PM
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Put a bunch of nuts and stone in it and put it on a rotisirie to get the junk loosened up/,. Flush it all out with water , blow dry with heat gun and line it with por-15. Take the picup tube and gauge out first.
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Old 05-22-2011, 10:31 PM
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I've cleaned out a few vehicle gas tanks and some NATO jerry cans with 50/50 muriatic acid/water and medium sized COARSE limestone gravel. First, I clean out the tank with some Simple Green or other degreaser and wash it out. Then slosh a few gallons of the acid/water mix and gravel and repeat and repeat.

Of course, you want to wear heavy rubber gloves, safety glasses AND a protective face shield, and away from anything you remotely care to keep clean. If you don't have coarse gravel, you can use some heavy chain, but the acid might etch/eat into it a bit.

I then wash the tank out with Acetone and let it air dry. After it's dry, I seal them up with some gas tank sealer.
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Old 05-23-2011, 01:00 AM
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Or instead of messing with nasty chemicals,take it to a radiator shop and have it boiled out,I had it done, tank was leak tested and cleaned for $60 and looked great when finished.
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