Quote:
Originally Posted by uncle buck
Has anybody here done a comparison with Ospho and Rust-Mort?
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I haven't used Ospho, but 19Fordy's description of it sounds like my experience with Rustmort. I removed the caked on dirt and rust from my floorboard with putty knives and wire brushes, then slopped on Rustmort with a disposable brush. Next day, you easily find the spots that didn't convert to iron oxide (black), and do them over again. Primer paint directly over the iron oxide, as
sanding it defeats the purpose of the product. On the underside, I used long rubber gloves and a full facemask to do the same.