POR15, Rust Bullet, Rust Converter Ultra - Anyone used these rust treatments?

[Wolf 335]

Wondering if anyone used these products to coat rusted areas and how they hold up over time?

They all hold pretty good reviews, however i was hoping to get some of our e90post veterans' opinions.

[86Zed]

I used PERMATEX® Rust Treatment on a few small areas of rust on a Miata door a few years ago. Worked well for me

After sanding, cleaning, and initial application


After a few coats of paint


Sold the car a year or two later so cannot report long term, goal here was just to stop migration.

[cozye]

i used POR 15 on a datsun. 12 years and still holding up perfect

[scubajim]

My cousin builds custom structures for large boats or yachts down in Miami. He has always sworn by Skyco ospho.

[Bruuuce]

I used POR-15 on the buggy chassis. So far so good.



I think they all work well though. It's all in the prep. Not sure the total use case you have. My latest was not a totally rusty surface.

I used a eastwood product on the frame of the truck a few years ago. It's holding up good as well. Again, quite a bit of prep work on the surface.

[Wolf 335]

Ended up getting a bottle of Phosporic Acid 85% as it is main active ingredient in all of rust converting products that actualy work as per reviews.

Going to dilute that to about 45-50% Phosphoric acid and apply to rust to stop it and conver it to iron oxde. Then i will follow it with a rust coating such as POR15 or Rust bullet.

[Tambohamilton]

Let us know how it goes

[Dochere2]

I've used Por 15 and RB. I prefer P15, it's thicker. Both work well. Both have similar quality prep products. I've used P15 on just about every brake rotor I've had / installed over the last 15 years, barrel and edges. Looks great. I've also done a couple trailers and other projects with both products. Anything regularly exposed to sunlight will need a top coat. Prep is key. Whatever it gets on it stays on. That's about it, P15 for the win.

[VGSON]

por15. Used it many years ago and worked really well. Painted the frames of a few of my trucks. Wire brush and pressure washed. Then went back with por15 a little later. Good product.