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Old 06-19-2012, 03:34 PM   #8
PetesPonies
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Join Date: Jul 2011
Location: South Carolina
Posts: 314
Default Re: Gas tank clean and seal cost?

These tanks are small enough that you could easily do the clean and seal. Buy some phosphoric acid from Home Depot.Its about $15 a gallon. Get several. Block off the tank and pour in the acid. Throw some nuts in as well, large ones. You need to agitate it. This will get the nuts moving around and breaking loose rust away from the tank. Tilt the tank and let it sit for 1/2 day or so, then tilt another way and let it sit. Leave the acid in for 3 or 4 days, moving it around and shaking when you can. After the 4 days, pour it all out. Normally I do not do this with phosphoric acid, but I would rinse it with water. Rinse a few times and blow air in it to dry it up as quickly as possible. Then buy some Master Series. Pour the MS in the tank and again tilt tank around. You want the MS to flow everywhere. MS comes in quarts, you might need two of them to have enough inside to slosh around.After you are sure you have coated the entire tank, pour out the excess and let it sit a couple days. At that point, you are in great shape. Use the tank as usual.
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Last edited by PetesPonies; 06-19-2012 at 07:38 PM.
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