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Discussion Starter · #1 ·
Has anyone used this? My buddy is a machinist and told me to use it to fix a couple of small floor pan spots before I line it.

This stuff is awesome. Used it today and you can tell its eating through the rust like crazy. I was told I wouldn't have it pop up again if I used that instead of just a sander.
 

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Better than POR15??
 

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Ospho is phosphoric acid. Any of you gun owners know that phosphoric acid is what gives firearms the parkerization coating that the military uses on its firearms. It is a great "anti-rust" coating by causing an initial layer of surface rust. Once that rust has formed, no more rust will occur as long as it is oiled or coated.

I have used this stuff on many brackets and small parts with great success. But since you have brought up using it on body parts, I would advise contacting the manufacturer of the paint you intend to coat with to make sure it is compatible. I have heard great things about POR BUT I have also heard some bad things about it... generally regarding a gas it emits which doesn't allow some paints to bond to it. As I understand it, once the POR is allowed to dry properly (as per the directions) than it shouldn't be a problem... but some jeepers have had problems with it.

Take care,
 

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I have been using this stuff on my 4x4s for years. It works great.
 

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Discussion Starter · #9 ·
I put some in a spray bottle and hit up some tie rods and things on the undercarriage rinsed then went back and sealed with fresh paint. Looks 50x better than anything else I've tried
 
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