Ox Knox - Brushless Oxidation Remover (5)

Tried it on splotchy Hardiboard siding. Made multiple applications for varying lenghts of time at dilutions ranging from 10:1 to 4:1 and even stronger. Called the Seller for advice. The stuff did nothing. The YouTube videos show it working on "oxidised" vinyl but vinyl is a plastic and a good cleaner will take residue off. I think this has a good cleaner in it, but despite taking meticulous steps, it simply didn't work at all on oxidation. My guess is it won't work for you either (unless you are cleaning vinyl, but in that case, get some Formula 409 or PineSol)...

I saw this product on YouTube and figured I would give it a shot. It worked great just like in the video. I was getting read to just replace my vinyl siding due to the horrible sun oxidation, but this product worked a miracle on my house. It saved my thousands of dollars. Literally spray soak and rinse. No scrubbing required!

Follow directions, but it did not take the oxidation off. Increased the strength, still no results. Tried scrubbing as well, still same. Finally power washed to get the oxidation off. Maybe it just does not work in Colorado or maybe it is too dry of a climate or maybe does not work on Painted Masonite.

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The media could not be loaded. So if your vinyl siding has bad oxidation like mine , yes this solution works but is physically difficult for a diy project on a typical two story home. You will need a 3000psi compressor , good nozzle and a whole collection of ladders . So I tried every variation of mix , application and nothing worked in one try . Yes this is a two step process to here very oxidized location on vinyl siding - the method that worked for me was - two steps - mix 75% solution 15% water , spray on siding in shade not direct sun , key is dry cool siding . Then Waite 3-5 min , solution can not dry , then power wash - I amPositioned at 5 -8 feet from siding when power washing in a consistent sweep motions . You will have to do this twice - yea a home like mine 4000 sq feet was a large job but it works - you will see visibly without power washing the solution turning brown with oxidized crap. But this is difficult process and will require three gallons of solution for 2000sq ft

I had some trouble with this stuff at first, but it was because I wasn't following the directions properly and I was trying to make it stretch further than it should. Once I worked with the right dilution rates and worked a small enough area, it really did work.

Tried to bring out the lost color on green metal roof and no matter the strength , it didn’t work

I tried the ox knox on my green metal roof and it only took 40% of the oxidation off the surface. I even applied a 1:2 ration and used a 2000 psi pressure washer and it still didn't work and made the roof look terrible. Buying a 5000 psi washer and will try straight vinegar and see if that will work.