Re: Cleaning a fuel tank with acid--non political please!

Posted by bc on February 14, 2009 at 08:50:14 from (68.88.175.43):

In Reply to: Cleaning a fuel tank with acid--non political please! posted by Jared M on February 14, 2009 at 05:51:25:

NE IA said: (quoted from post at 08:51:25 02/14/09) Yesterday I used muradic acid to clean a fuel tank, Totaly unbelievable results in a hr or less. It looks better than the day it was made. I've used sand blasters, cement mixers, vinager, rocks & bolts over the last fourty years with decent results. Never again will I mess with the other stuff. I know this issue has been addressed before, but my skills for finding things isn't my strong point at all. So once I get it clean and I drain the liquid out, how do I keep the tank from flash rusting? I keep thinking of Phosperic acid, but I'm not sure. Has anyone had any problems with Red coat for coating the tank after cleaning? I'm also hoping this doesn't turn into a political post as most of them do. Just kiddin Thanks everyone, maybe I will remember where I left my memory some day. North East Iowa

I did mine while sitting on the tractor. 2 gals of muratic acid diluted with water to the top. I didn't add the water until the bottom got a good straight acid shot for a few hours. Left it all in there for a day or so. Was told it might melt the tank but no such problem.

Found some of that stuff at home depot, mixed it with water and left it for a while.

Then sprayed it all down with wd40. Was told that it coats the tank and helps stop the flash rusting.

1 year later I still have some rust showing up. The tank has a baffle and I can't get behind the baffle to treat it with the wd.

Lots of stuff on the internet and this site about this. I read somewhere and forgot that TSC carries some product that has a high content of phospheric acid and cheaper than the home depot stuff. I can't find it though.

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