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My Recent Posts · (05/06/08

How long do I leave the sulphuric acid in my gas tank to eat the rust. I am assuming that I have to keep it moving or sloshing a little and just keep watching but I have never actually done this myself. If someone that HAS done this could give me a little advice I would appreciate it. Ya know... save me from a blown up tank or a trip to the E-R. LoL.
Also is it necessary to seal after cleaning? I would think the gas fumes etc would prevent re-rust.

My Recent Posts · (05/06/08

I always thought you were suppose to use murratic acid.

My Recent Posts · (05/06/08

I have never used sulfuric acid, but I've used CLR and a big box of BBs to clean rust out of tanks with excellent results. It takes longer that stronger acids but doesn't generate as much fumes and gasses during the process. Just crack the gas cap every minute or so. On bad tanks I've diluted the CLR with distilled water and left the tank over night without the BBs upside down one night with the petcock open, then up side up with the gas cap cracked open, then used full strength CLR and BBs to knock the softened rust loose.

Gas has water in it, and a partially full tank will also develop condensation at times, so over time it will rust up again. A sealer will prevent this but the common sealers (Kreem, etc) have their down sides as well. Red-Kote has been getting favorable mention over Kreem on a number of other motorcycle and old car forums. I will be giving it a shot here shortly.

My Recent Posts · (05/06/08

The best stuff is "The Works" toilet bowl cleaner. Costs about 2 bucks at Wal Mart. Procedure goes as such:

1.) Empty Gas Tank
2.) Throw in a handful of bolts/BB's/buckshot/etc and shake the tank to dislodge all the chunky rust. Dump out the above.
3.) Plug the petcock and dump in a container of "The Works" toilet bowl cleaner. Slosh it around for a few minutes making sure you get it all up inside the tank.
4.) Dump out the toilet bowl cleaner and fill the tank with a water/baking soda mixture. This will neutralize the toilet bowl cleaner. Fill it to the top.
5.) Dump out the baking soda/water and pour in some 2-stroke oil. Slosh this around making sure to coat all the inside surfaces in two-stroke oil.

It's best if you're gonna use the tank immediately and can fill it with gas after the 2-stroke oil treatment. The toilet bowl cleaner will eat all the rust out in a minute or two, but not the metal. The rest of the steps are to prevent flash-rusting after emptying the tank.

And yeah, a sealer (Red Kote or POR, never use Kreem) will make sure you don't have to do it again. If it's not painted, the best sealer is to have your local radiator shop boil it out and then seal it with their shit.

My Recent Posts · (05/06/08

Gonna have to try that next gunky tank I wind up with. Never would have thought of using crapper cleaner to clean the crap out of a tank.

A lot cheaper than CLR for sure.

My Recent Posts · (05/06/08

have not tried this myself yet, just watched the video, but it looks very interesting...

go here
http://www.powerblocktv.com/sites/video/powervideo.php

click on Trucks! on the left side, then on the right side, scroll down to video for 'Rust Removal Tip'.

My Recent Posts · (05/06/08

It's called electrolytic rust removal. I use it to remove rust from some bike parts, even carb parts sometimes. Doing a tank with this method you need to lower the iron rod down into the tank and use the tank itself as the dipping tub. The rod cannot touch any part of the tank. I a cheap ass and use rebar for the expendable iron rod. Small parts require lower amperage.

My Recent Posts · (05/06/08

that's what i use, too, Houndog. i followed these instructions and used a battery charger as my power source.

n

My Recent Posts · (05/06/08

THANKS to one and all.......See you in the wind!

My Recent Posts · (05/07/08

yep...Never use creem...Never

My Recent Posts · (05/08/08

4.) Dump out the toilet bowl cleaner and fill the tank with a water/baking soda mixture. This will neutralize the toilet bowl cleaner. Fill it to the top.

What is the ratio of baking soda to water?

Author	Comment
drifter662	Gas Tank Question	Lead	[-]
Posts: 316 (05/06/08 6:17 AM) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	How long do I leave the sulphuric acid in my gas tank to eat the rust. I am assuming that I have to keep it moving or sloshing a little and just keep watching but I have never actually done this myself. If someone that HAS done this could give me a little advice I would appreciate it. Ya know... save me from a blown up tank or a trip to the E-R. LoL. Also is it necessary to seal after cleaning? I would think the gas fumes etc would prevent re-rust.
vtxman		#1	[-]
Posts: 308 (05/06/08 7:50 AM) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	I always thought you were suppose to use murratic acid. I woke this morning and got myself a beer. yeah,I woke this morning and got myself a beer. The futures' uncertain and the end is always near !! ( Jim Morrison )
Houndog750		#2	[-]
Posts: 1813 (05/06/08 8:44 AM) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	I have never used sulfuric acid, but I've used CLR and a big box of BBs to clean rust out of tanks with excellent results. It takes longer that stronger acids but doesn't generate as much fumes and gasses during the process. Just crack the gas cap every minute or so. On bad tanks I've diluted the CLR with distilled water and left the tank over night without the BBs upside down one night with the petcock open, then up side up with the gas cap cracked open, then used full strength CLR and BBs to knock the softened rust loose. Gas has water in it, and a partially full tank will also develop condensation at times, so over time it will rust up again. A sealer will prevent this but the common sealers (Kreem, etc) have their down sides as well. Red-Kote has been getting favorable mention over Kreem on a number of other motorcycle and old car forums. I will be giving it a shot here shortly. It was Honda first, all through the middle, and if I have my way, till the end as well. Most people say what they'll do. Very few actually do what they say.
JLeather		#3	[-]
Posts: 2190 (05/06/08 9:18 AM) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	The best stuff is "The Works" toilet bowl cleaner. Costs about 2 bucks at Wal Mart. Procedure goes as such: 1.) Empty Gas Tank 2.) Throw in a handful of bolts/BB's/buckshot/etc and shake the tank to dislodge all the chunky rust. Dump out the above. 3.) Plug the petcock and dump in a container of "The Works" toilet bowl cleaner. Slosh it around for a few minutes making sure you get it all up inside the tank. 4.) Dump out the toilet bowl cleaner and fill the tank with a water/baking soda mixture. This will neutralize the toilet bowl cleaner. Fill it to the top. 5.) Dump out the baking soda/water and pour in some 2-stroke oil. Slosh this around making sure to coat all the inside surfaces in two-stroke oil. It's best if you're gonna use the tank immediately and can fill it with gas after the 2-stroke oil treatment. The toilet bowl cleaner will eat all the rust out in a minute or two, but not the metal. The rest of the steps are to prevent flash-rusting after emptying the tank. And yeah, a sealer (Red Kote or POR, never use Kreem) will make sure you don't have to do it again. If it's not painted, the best sealer is to have your local radiator shop boil it out and then seal it with their shit.
Houndog750		#4	[-]
Posts: 1814 (05/06/08 9:31 AM) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	Gonna have to try that next gunky tank I wind up with. Never would have thought of using crapper cleaner to clean the crap out of a tank. A lot cheaper than CLR for sure. It was Honda first, all through the middle, and if I have my way, till the end as well. Most people say what they'll do. Very few actually do what they say.
steveh326		#5	[-]
Posts: 49 (05/06/08 10:01 AM) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	have not tried this myself yet, just watched the video, but it looks very interesting... go here http://www.powerblocktv.com/sites/video/powervideo.php click on Trucks! on the left side, then on the right side, scroll down to video for 'Rust Removal Tip'. Steve
Houndog750		#6	[-]
Posts: 1815 (05/06/08 10:22 AM) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	It's called electrolytic rust removal. I use it to remove rust from some bike parts, even carb parts sometimes. Doing a tank with this method you need to lower the iron rod down into the tank and use the tank itself as the dipping tub. The rod cannot touch any part of the tank. I a cheap ass and use rebar for the expendable iron rod. Small parts require lower amperage. It was Honda first, all through the middle, and if I have my way, till the end as well. Most people say what they'll do. Very few actually do what they say.
constriktor		#7	[-]
Posts: 470 (05/06/08 10:33 AM) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	that's what i use, too, Houndog. i followed these instructions and used a battery charger as my power source. n "It'll destroy you if you try to make it mean anything to anyone but yourself." - Henry Rollins
drifter662		#8	[-]
Posts: 318 (05/06/08 10:57 AM) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	THANKS to one and all.......See you in the wind!
the750sergeant		#9	[-]
Posts: 1079 (05/07/08 5:41 AM) Senior Member Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	yep...Never use creem...Never You can't "Chop" when you keep adding crap...
Maxx		#10	[-]
Posts: 72 (05/08/08 8:20 AM) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	4.) Dump out the toilet bowl cleaner and fill the tank with a water/baking soda mixture. This will neutralize the toilet bowl cleaner. Fill it to the top. What is the ratio of baking soda to water?

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