Rust Remover Makes 16-gallons of Economical, Safe-To-Use and Powerful Cleaner For All Your Rust Removal Projects | Makes 16 Gallons, Acid-Free, Non-Toxic, For Tools, Auto Parts, Gas Tanks, Motorcycle Chains

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.

Rust 911 is inexpensive, safe to use, and kills rust, as claimed. It does NOT remove paint, primer, or body filler, but the manufacturer never claimed it does so. The parts to be derusted must be thoroughly stripped of paint before treatment with Rust 911, which can be a lot of work with today's wimpy paint stripper liquids. After treatment, the rust is transformed to a black film that must be brushed from the metal; I've found scrubbing with a stainless steel toothbrush works well. To loosen the film in hidden areas, like behind brackets, I pour a tablespoonful of steel BBs into the hidden area, tape off the holes, and vigorously shake the part. Then I remove the tape, pour out the BBs, and dunk the part back into the Rust 911 to flush the loosened particles. Several repeats of this procedure does a pretty good job removing rust from the hidden areas - slick! Even the non-rusted areas of the metal will have dark stains after treatment with Rust 911; they must also be scrubbed or sanded off. Then I rinse the metal with clear water and wipe it with phosphoric acid (metal prep) to prevent re-rusting. I also noticed if the part to be derusted is too big to be completely submerged, Rust 911 will etch a shallow groove into the part right at the waterline, which was a bit of a surprise. Overall, a good tool, but not magic.

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!

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.

Fantastic product, nothing works quite as well on large items. Aggressively dry the product after you soak in very hot weather, or use fish tank heaters, and paint ASAP. Items look like new, easy to use, other than setting up a soak tank.