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Not as good as the phosphoric acid based products (5x cost) which leave a black primer like surface BUT still good.  Can spray with garden sprayer or hand spray bottle. On sale at Walmart for $8 off a jug.

http://www.walmart.com/ip/Evap...10&veh=aff#about

Evapo-Rust Super Safe Rust Remover, GallonEvapo-Rust Super Safe Rust Remover, Gallon

1957 CMC Classic Speedster

    in Ft Walton Beach, FL

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My .02--I fished commercially for several years, and have owned a series of boats that I ran from Mexico to Oregon, for albacore, salmon, rock cod, crab, etc.  For those with ocean experience, you know that the ocean always wins.  One of its job is to disintegrate non-oceanic material that has the audacity to float on its surface, such as boats, which have all the ingredients on board to make them a large, floating battery: dissimilar metals, electrical power which generates current flow, etc.

One of the ways fishermen use to wage this war of survival is Ospho, a liquid composed of oxalic and phosphoric acids.  Ospho chemically changes iron oxide, common rust, to iron phosphate, a hard, black surface that becomes fairly inert.  I say "fairly", as fishermen realize that you are merely postponing the inevitable, not really winning the war.  I personally recommend its usage.

I would urge caution when using a new product, UNLESS you get a similar endorsement.  The work is in the prep, as we all know.  No one wants to do the hard work, only to find out 2 years down the road that it was for naught, since the paint-covered rust is now worse than ever.   

Last edited by Jim Kelly
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