Re: Oxalic acid after-work

P D /
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Like everything else , there are no absolutes .

Your tank may be more or less rusted than mine was .

I left the acid mix in my Simplex tank for about 24 hours . Dumped the mix into a clean tub . Rinsed the tank with clean water . Inspected and decided another day of acid mix was in order .

Oxalic acid leaves a coating after rinse .

Note the lower part of the brake plate has been wiped clean . The upper part still has the coating .

That coating can be left in the tank . It doesn't hurt anything being mixed with fuel . (edited)

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