Rust911 Rust Remover Ultra Concentrate - Makes 16 Gallons - Industrial Strength, Acid-Free, Non-Toxic - Safe for Automotive, Tools, Metal Restoration, 1-Gallon Jug

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 was looking for a way to remove rust from a '71 Corvette suspension parts. I don't have a blast cabinet, and have a limited tolerance for noxious fumes. Rust911 proved to be a very easy way to achieve acid-dipped performance fairly quickly and without harsh chemicals. Per the instructions I scraped of the 50-year crust of grease-soaked dirt, then washed the parts in detergent to remove any remaining grease. I filled a plastic container with as many of the parts as would fit, added five gallons of water to cover everything, and poured in five cups of Rust911.After an overnight soaking I sprayed each part with a hose nozzle to remove the clinging solution, and all the rust came right off. There were some remnants of paint on the parts when put I put them in, and some of that remained after rinse. A quick scrub with a wire brush remove the paint residue.The product exceeded my expectations. I have filled the same container three more times with additional parts. The solution turns increasingly blacker as iron oxide is removed from the parts, but still seems to be just as effective. The instructions says mixed solution can be saved in plastic containers and reused until its fully saturated with rust.Highly recommended!

Based on the description and photos, I was hopeful that the rust would/could be removed from my outdoor weather "spinner" hanging decoration. I used the solution as instructed twice keeping the item submerged for 1 week each time. The solution turned black, I dumped it, rinsed off the item, and some of the rust had been removed each time. If you have a little to moderate amount of rust, it may work better than how much it worked for my item (which was more than moderate). I was able to remove some of the rust but, not as much as I wanted and would have liked. I think it's still a good product though and would purchase it again.

This stuff is awesome. Removes rust without harming the base metal and doesnt have anybstrong odor like many of thebother rust removers do. Best part is the liquid can be stored and reused again and again until it turns jet black at which point its can be poured into a sink/toilet without any harm to the environment. If you need a good rust remover this is a great option!

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!

I wish that I'd taken before pictures, but this product did a very good job of removing rust from several moderately rusted items that just barely fit into a 4 gallon rectangular tub. I only used 16 oz of the concentrate mixed with two gallons of water and then flipped the sides that were not submerged over after about an hour. Worked really well on the cast-iron heavy AC compressor bracket and brake pedal, and still quite good but not as great on the brake pedal bracket, made from thinner stamped steel that likely had some coating. Better results and much more cost-effective than Evaporust. I did hit all of the parts with a brass brush drill attachment first in order to not waste the chemical on stuff that could easily be removed mechanically. Very effective product that I'll buy again when I run out.

As the title says, useless. Follow instructions to the t, and no rust ever disolved. Like zero. I do not recommend.

This stuff is amazing works good on everything I have used it on but don’t last long! Bit is worth to buy again