Purple Power & Evapo-Rust - product review.

i have used evaporust a lot and the results are usually good.For large items i have mixed it 4:1 with water to get enough to completely submerge the part.
I diid a complete engine block once...wish i taken some before and after pics as it turned out great,but took a few days with the diluted solution.
...the nice thing is it can be used over and over.