Rust Converter Ultra, Highly Effective Professional Grade Rust Repair Spray (1 Gallon)

I used this on an old car body that was glass bead blasted and it worked great for me. I applied it uncut with an undercoating gun. It went on pretty good considering the cheap gun I bought because I couldn’t find my old good one. On the inside, it went into places that blasting couldn’t get. It turned purple, and after 4 days, I sprayed epoxy primer over everything and it adhered well. I live in Arizona where the humidity is very low, so consider your humidity levels, you don’t want to trap moisture between your metal and this stuff. This stuff is good for existing rust, not so much for preventing rust from trapped moisture, or your finger prints.

My 2014 Tacoma was developing some rust spots underneath, so I tried this rust converter. It worked amazing well! It looks like milk and does not have any nasty odor. I simply brushed it liberally on the rusty spots on the undercarriage, and within a day or two I noticed the rust was gone. No scraping or sanding required. I also did not bother painting over it afterward as the rust was all surface level and this really took care of it. Unfortunately, I only used about 1 quart of the stuff so I have a ton left over... if it came in a smaller container option that would be great. But still, for the price it worked great and took care of the problem, so I highly recommend.

I recently bought the Rust Converter to use on the roof of my 2005 Toyota 4Runner. Years of roof loads had left scratches all over the roof that subsequently rusted. I was dreading the thought of sanding the roof to remove the rust. I was actually looking for a metal treatment product to put on the roof after I sanded when I found the rust converter. I followed directions and lightly sanded the roof to remove high spots and generally smooth the roof for painting. I applied the solution with a brush, waited for several hours and gave it a second coat. The rust converter worked as advertised and turned all the rust spots to a dark black color. I am ready to paint and extremely pleased that this product took my prep time down from 5 or 6 hours to less than 2. The only comment I will make to first time buyers is that -- a little goes a long way. Not wanting to run short I ordered the gallon size. After applying two coats and touching up some other areas around the house, I found I used a little over a pint. So gauge you needs by that. I am a USCG Captain and can see the value of using this product a thousand places on my boat. It is a great product and I will buy it again. Tom -- Charleston SC

Wonderful product, does what it claims. Repairing the rust on my truck especially the underside using a sprayer bottle and a brush to spread it. First went with a scaper to remove loose rust and dirt and did two coats and now it's all black and water repellent. Will not coat the underside with anything else till possibly next year in case I need to do one more treatment as the rust was severe on some areas. I chose to treat it (converting) rather than remove it cause if there's any left, it will come back, it's like cancer. One gallon should be enough and have some left to do the steel rims, calipers, drums and other rusted parts Very grateful for this product, tried many other and this one actually works.

Wear rubber/nitrile gloves, you'll need them. Having a fine nap paint pad may be handy if you don't have tons of gloves. Product is thin and coverage is excellent. Thin yet somehow viscous enough to not drip a lot. Applied with brush on rusty OME leaf springs. Everywhere that factory finished remained it turns whitish. (Manufacturer recommended using oil based finish to protect once product cures in 48 hours) like any job, prep is key. your mileage may vary. Everywhere there is rust or bare metal turns a dark purple/midnight within 30 minutes. It foams a lot so wouldn't recommend using an air sprayer. The cleaning type sprayer (Windex bottle) would be good on "stream" for covering large areas of truck frame or large projects. When foaming occurs in project material; sampling rub with gloves hand or use fine napped paint pad or microfiber cloth. Used about 4 oz. to cover all leaf springs twice over. Next morning product seems cured with no off-gassing. Time will tell longevity. I tested rusty bolts, a shovel, some plate steel. Un cleaned truck frame, product was not picky ... Works on just about everything. Much easier, cleaner, better coverage and adherent, non-fuming alternative to POR15

I had the surface of 3 large PCs of farm equipment and 2 trailers, 12ft & 26ft, professionally blasted to bare metal this surface rusted nicely in the next 48hrs from Florida rainy season humidity and rain. I tried brushing 1st but was too slow,doing 2 coats. I'd do one ft ft section,then go back over it B4 going to the next section. It looked all black and good,,till the next day when it dried. It dried very transparent and looked rust still thru the thin black,even tho it was shiny,wet black when applied. I wasn't happy with this because I didn't untent in painting over it,and spending 2x more money for metal\rust paint! So in a last ditch effort I put the product in my harbor freight cheapest automotive spray gun at 20psi air pressure,,applied a 3rd and 4th nicely even coat of the material on my equipment. In the trailer I tried applied the material too heavily with a squirt bottle and used a sponge to smooth it out. No application method produced a nice finish on the 1st application. Once it dried I tested a 3rd coat just wiping a small area in the trailer ,,and that turned out quite nicely. Just a heads up in case you see sales pics from these distributors showing B4 and after pics ..it can be achieved,but only after letting the 1st 1-2coats dry fully over night,,and application of a second coat,calling that to dry overnight. That's a problem here in Florida because it rains often . We used plastic tarps to protect it.and worked out well. See photos

Pleased with the results. Undercarriage is new looking now.

I bought a gallon of this stuff from here over two years ago. I've used it a couple times on small scale with mixed results. Just recently I decided to really give it a major test. I was trying to restore a Jeep Dana 35 rear axle. It had really bad rust all over. Here's pretty much the step by step what I did: 1. I cleaned off all the loose rust and chips with wire wheels and whatnot. 2. I cleaned the areas with mineral spirits (I'm not exactly sure if that was the right thing to use, but that's what I had so oh well.) And let it dry thoroughly. 3. Coated areas fully with rust converter. Goes on white/cream color and turns bluish, then black when dry. I let it dry for about an hour and then added a second coat. A little of this stuff goes a long way btw. 4. I let it cure for 2-3 days. 5. I painted with rustoleum professional rattle can flat black. 2 coats. No primer. Let dry for about a hour before second coat. After about a week everything is cured and it feels like a solid job. The paint is hard enough to meet my standards and it over all looks great. I can't speak for longevity, but initially I think the axle will hold up okay. Only time will tell.

it was eating through the paint even after letting it set for three days.

Great value for the money and it does exactly what it says on the tin. I will definitely buy this again.