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  #1  
Old 30th January 2011
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BrentmanII BrentmanII is offline
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Default Using CLR ( acid ) to clean ( light ) rust from gas tank?

Ok now..... I have read the post in XL Forums about cleaning gas tanks.

The tank I have just has light rust ...no heavy scale. So I wondered if I needed to give it a rinse with acid/water and marbles?...or just leave it alone...and put a good filter on the line!

( maybe give a rinse with solvent and give it a good blow job!!! being careful not to get solvent on the lips .. ha ha ha!)

My past mechanical experience with any type of acid...is as soon as it touches metal....and you clean it off..... the metal rust before your eyes...I'm thinkin that the tank would do the same.
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Old 30th January 2011
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I know of many people who have used a product called "The Works" Toilet bowl cleaner to rinse light rust out of the tanks. It's cheap and you can get it at WalMart. Probably about the same as CLR, but if you already have a bottle of CLR use it. It will disolve light rust just as well. Make sure to oil the tank after you rinse the shit out of it or it will flash rust pretty quickly.

A way to prevent tank rust is when you put the bike in storage for the winter fill the tank with 2 cycle gas. The oil in the gas keeps the rust down.
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Old 30th January 2011
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The procedure in the FM to store a fuel tank is to put in a small amount of 50/50 oil/gas mix, slosh it around, and empty the excess. You need only a few ounces of each. The gas evaporates and leaves the oil behind. Trying to do this with straight oil is difficult.

I have used the CLR with no success, but it was in a tank with heavier rust.
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Old 30th January 2011
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I've always used diluted muriatic acid. Then rinsed it thoroughly with hot water. Used a hair dryer on high to dry it thoroughly (takes about 45-60 minutes with the nozzle stuck in the gas opening). Then immediately use Micks tip with 50/50 oil and gas.
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Old 30th January 2011
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Phosphoric acid ( easy to find) will remove the rust inside the tank.
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Old 30th January 2011
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Or if you don't want to handle acid, have a radiator shop remove the rust.
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Old 31st January 2011
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Quote:
Originally Posted by BuckIRyder View Post
Or if you don't want to handle acid, have a radiator shop remove the rust.
and have them install a RedKote or POR [not Kreme] tank liner.
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Old 31st January 2011
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or use coke cola as it is high in Phosphoric acid ,but the suger in the cola will messup the motor Nikki
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Old 31st January 2011
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If you're not in a rush, and want the inside of your tank as claen as the day it left the factory, fill it completely with a 50/50 mix of molasses and water. Depending on how rusty it is, it can take from 1 month to 6 months, but it won't eat any of the "good" metal away and it wont harm the paint.
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Old 31st January 2011
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Quote:
Originally Posted by rivethog View Post
If you're not in a rush, and want the inside of your tank as claen as the day it left the factory, fill it completely with a 50/50 mix of molasses and water. Depending on how rusty it is, it can take from 1 month to 6 months, but it won't eat any of the "good" metal away and it wont harm the paint.
rivethog drop a rutsy bolt in a coke and watch the rust convert to iron phosfate . it's an old paint shop trick from the fiftys. Nikki
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