Ospho Rust Treatment

Anyone here ever tried to treat the rust on your truck with Ospho? Was just talking to a guy who restores classic cars and he recommended this stuff. My truck is from CT and there is a lot of rust I would like to tackle when the weather gets a little warmer. Was planning on just buying some Rust-Oleum Rust Reformer to spray on (after sand blasting, chiseling, wire wheeling, etc.) and topping it off with an undercoating but this stuff looks like it would be much more cost effective. Any thoughts?

 

It's good for converting the rust to something stable, but you still need to topcoat it.


Others here seem to like Corroseal, which has a built primer.

 

Corroseal sounds even better. I'll look into it. Thanks

 

If your truck has a lot of rust, it’s probably smarter to look for an escape from ownership at this point.

 

It will really only convert the top layer of rust which is better than nothing. Some of the converters you have to rinse the excess off and then let the frame completely dry again before painting. Which means you need to thoroughly apply your converter to the rusted areas otherwise when you rinse the frame your just causing flash rust.

I have no experience directly with corroseal.

Seems like you have a good plan though. Don’t leave any flaking rust behind. Make sure at minimum your down to surface rust. Some areas it’s way easier to wire wheel down to the bare metal compared to other sections of the vehicle.

After you topcoat the frame with your rattle can of choice. Let that cure for a few days and then go back and topcoat with a rust protectant like fluid film or similar.

 

Good tips JdevTac thanks, I'll check and see if either of the converters need to be rinsed off before I get to work. My frame is actually new on the truck, just a lot of rust elsewhere I'd like to take care of. Already failed inspection for holes in the floor pan but I think it can be fixed up with a little time and attention. Heard good things about fluid film but can it be applied over paint? Anywhere it shouldn't be applied?