Makes 4-gallons of Rust Remover Dissolver - Economical, Safe-to-Use, No Acids - Fast Rust Removal Without Sanding or Harsh Chemicals - Ultra-Concentrated 32-Ounce Bottle

This stuff is amazing. Works better than other rust removals that I have tried

Trying to get an antique car back to running condition, and the gas tank had lots of rust inside. I got rid of the old gas and washed it out as best I good, but there was still lots of rust. Since this makes enough to fill the tank, I thought I'd give it a try. The key I found is that cold water won't work. I filled it up, but after 12 hours, not much had happened. Recommendations were to warm it up a little, so I put a 500 watt halogen work light next to the tank. Once the solution warmed up, it did wonders! Two days later, the solution had turned black as coffee and I couldn't even see the bottom of the tank anymore. Once I got the solution out, all I can say is WOW! It cleaned up the rust beautifully on a 77 year old gas tank. The sender was sitting in it, and the tank was as rusty as the sender. The bottom of the sender is pretty much how well the tank cleaned up.

I mixed the 911 AND tap water - 16 parts water to one of 911. Immersed some rusted parts in the solution and in a relatively short amount of time (30 minutes to overnight) and the rust is GONE and once rinsed and dried I then powder coat them and the powder coating comes out great. Works best if the solution is room temperature or a little above. I think I get a fair number of parts before the solution won’t work any longer. Once it turns black it’s time to mix a new batch. Any one who follows the instructions and doesn’t get a good job is a liar or is mixing or using 911 totally WRONG. This stuff is great and it works!

The product worked as stated and rendered my rusty gas tank usable again without the need to dismantle it from the car. I used two applications with two rinse cycles after each derusting cycle. Mix accurately and be patient! I also used air bubbling to give it the agitation and enhance the rust dissolving process. Highly recommend as it is safe and odorless as well.

This stuff is cheaper than Evaporust so I got it for a rusty motorcycle gas tank I had. I had tried the Vinegar trick with little success due to it flash rusting in literal minutes. After that failure I got this and let it sit for about 3 days and the metal was completely clear of rust. I also didn't have to try flushing the gas tank like crazy with a garden hose or neutralizing any acids since this isn't acidic. For my MC gas tank all I had to do to rinse it out was put in about 3/4 of a gallon and swash it around for about 3-4 minutes; did it once again with another 3/4 of a gallon for another 3-4 minutes and then just filled up the tank with fresh gas. It's been about 4 months since then and my tank is still about 99.9% clear. I never put an epoxy coating in it since I've heard bad things and figured keeping the tank full of gas should be good enough. 99.9% free of rust after 4 months proves this stuff works and won't cause issues like vinegar does. I keep it in a 5 gallon bucket with a lid as well for when I need more of it. Shelf life is a year after opening.

Removes rust as described. It WILL remove "Light Surface Rust" in 30-60 minutes, but most of the rust I'm battling takes longer. On heavy issues, I've left for quite some time, including an occasional brushing and rinsing. While removal of rust will mean some material is being removed, I have not found that the product damages the remaining surface. It doesn't even remove the paint unless there was rust between the metal and the paint already. I'm not seeing it remove 'magic marker' as a general rule. It finally gives up its rust removal qualities with time, but you can use it for multiple soakings on multiple parts. It says it can be poured down drain and it doesn't burn skin (albeit I still rinse skin if contact). If you need multiple gallons of the solution, this format is the product to use as you're not paying for the water and extra packaging/shipping. Also note that you just use the amount stated as 'adding extra' does not increase effectiveness. Just wish i had huge container to dip extra large parts. Highly recommend. Will re-order.

I messed up and forgot to take a before picture so there is no use posting an after. I'll just confirm that this works faster than I assumed. I used it to restore a gas tank on my 1995 bmw 318i that was loaded with rust. I assumed I would need to leave it over night but in a couple hours I took it out to check it and the job was completely done. Also, there was a delivery issue and the owner of this business gets 5 🌟 as well. Responds the same day within the same hour. This product and company is worth your try. They did not disappoint...not in one area.

Works great for removing rust but leaves your metal an unsightly black/grey color. I used metal rescue for two metal tubes and rust 911 for two other metal tubes. Both removed the rust equally well but the metal rescue left the metal shiney and clean whereas the rust 911 left the metal blackish grey. I personally prefer the metal rescue but the rust 911 is significantly less expensive. If the look/color of your metal is not an issue purchase the rust 911 however if your metal will be on dhow and needs to shine use the metal rescue.

It works very good