Topic: Evapo-Rust anyone?

[Scott S]

 Who's had experience with Evapo-Rust? I've read and heard good things about it. Is it true that it won't harm the paint and rubber seals, etc.?

 I have this small-ish bottle and was thinking about rinsing out my 550F tank. It's pretty clean with some of that fine, powdery flash rust, but there is one spot down in the rear corner that I'd like to clean up a little.

 I've had EXCELLENT results using The Works toilet bowl cleaner method, but that was always on a tank I was going to paint anyway. I'd like to not harm the original paint on the 550F.

 I don't have enough to completely fill the tank and let it sit. Would I be wasting my time to use what I have and swish it around with a length of chain inside?

[Greggo]

I had very good results, and it will not harm the rubber, and I'm 99% sure it won't damage your paint.  That small bottle will take a long time to clean a 550 tank though.  Give it a try and just keep turning it every hour or two.  You shouldn't need the chain.

[acollin]

I had great results. Rusty tank restored to almost new looking. I don't know how it will work as a "rinse".

I filled my tank with golf balls and evapo rust and let it sit for awhile--longer than the directions say--a few days actually. The stock paint was undamaged-- i even left the petcock in place. When I did slop the evapo rust on the paint , as a precaution, I cleaned it up quickly and through a bit of wax where I got messy.

I used the golf balls to take up volume and use less evapo rust-- the stuff can get expensive.

[flybox1]

Klean Strip Prep-n-Etch
leaves a nice grey coating and no flash rust.

[Tugboat]

EvapoRust is great. Pricey, but great.

[RAFster122s]

The Works (an acid) will eat rust and good metal, so a liner is often recommended as the original finish of the metal has a bit of protection which isn't present after being etched with the acid. The Phosphate coating left by the Prep-N-Etch is good for paint and POR's Metal Ready is a phosphoric acid solution, giving similar results at $ more $. The POR liner is excellent stuff if applied to a dry tank, needs to be bone dry and instructions followed.
Water in the tank will flash cure the POR and cause problems that can be far worse than original with the trapped moisture eating your tank and compromising the coating causing it to fail.

David

[cabrala]

Hey Scott,

I tried EvapoRust in my 750F tank without much luck. I followed the directions for the tank being off; that meaning one gallon of product in the tank with rotations every couple hours. I left it in for one day on each side (bottom, right, left, top, front and back) and was not impressed with the results. I still had rust and heavy pitting that wasn't dissolved.

Some will say that prep is everything and I agree. I cleared varnish using Dawn soap and very hot water in combination with a chain to break up deposits. After soap and rinse I saved with acetone and dried for a few hours. Then the gallon went in...

I feel as though a full tank of Evaporust would have done the trick but not at $25 a gaĺlon. Maybe some guys dillute the solution but it wasn't something I did. Vinegar up to the brim, a baking soda bath after, and a bit of prep and etch to catch any and all residual rust. Worked like a charm but I found pinholes and now need to seal.

[Vinhead1957]

I used it for one tank and it came out like new!  I used sheet rock screws in the mix and a lot of shaking to free the flakes of rust. Second tank has a lot more lots of shaking with some success. I guess it is all in how bad it is rusted

[750K]

I've used it to de rust other things around the shop, it worked flawlessly

[cabrala]

No thread jack intended but does this product come in different bottles? Mine looks nothing like the OP's photo. Just curious as to the branding...

Everyone seems to have great results so I'd be willing to give it another shot but the price is a bit hard to swallow for big jobs.

[Tews19]

I use Vinegar!!!!! Woks great... and 10 bucks for 5 gallons... Rinse with 1 cup baking soda and pressure washer....

[goldarrow]

you can get them by 5-gallon bucket https://www.google.com/search?q=evaporust&sourceid=ie7&rls=com.microsoft:en-us:IE-SearchBox&ie=&oe=

fill the tank up with it and leave it for a day.  you can rinse and filter for reuse a few times

cheaper alternatives would be electrolysis. 

[goldarrow]

I use Vinegar!!!!! Woks great... and 10 bucks for 5 gallons... Rinse with 1 cup baking soda and pressure washer....

i've tried the vinegar on the rusted exhaust mounting flange, 3 days in it, no good result....wonder what i did wrong.

[Bailgang]

I've got some Evapo Rust and it does work just don't be in a big hurry. I used it to clean up some fork ears for my 750 but by the time it cleaned up all the rust there wasn't much chrome left and ended up sand blasting them and painting them with bumper chrome paint until I get get a good set. It wasn't the Evapo Rust fault, it's just that the fork ears had a lot of surface rust. And as said before it is pricey.

[Tews19]

Ive used vinegar on at least 3 tanks... most I let soak 5 days.. I drain and then use my pressurr washer inside it... I drain... then pour in 1 cup of baking soda... fill with water to the brim.... soak 20-30 min.... Then pressure wash the inside again.

[RAFster122s]

I use Vinegar!!!!! Woks great... and 10 bucks for 5 gallons... Rinse with 1 cup baking soda and pressure washer....

i've tried the vinegar on the rusted exhaust mounting flange, 3 days in it, no good result....wonder what i did wrong.

the apple vinegar is weaker than white vinegar...so, you might have gotten a weaker variant/variety.

[RAFster122s]

Rust of steel can develop layers of dark brown or black scale which is difficult to remove or deal with. If you tank has this it is going to take a lot to deal with it and it is going to be very thin after removing this rusty metal.

[VTCBike750]

Ive used vinegar on at least 3 tanks... most I let soak 5 days.. I drain and then use my pressurr washer inside it... I drain... then pour in 1 cup of baking soda... fill with water to the brim.... soak 20-30 min.... Then pressure wash the inside again.

+1

[Scott S]

 EvapoRust worked just fine! I threw in a few "tumbling stones" that I've had from an old job and shook, rotated and let it sit, turning it every now and then. Dumped it out, rinsed, poured in some denatured alcohol, dumped that out, then air dried and let it sit in the sun before adding a few ounces of Marvel Mystery Oil to coat it.

[Greggo]

Looks great in there!

How long did the solution soak?

[Scott S]

 Not very long.....only a couple of hours total. I did have some tumbling media in there and I shook it and rotated it from time to time.