milk paint

I have cleaned hundreds of rusty old tools using electrolysis, in plastic tubs only and with Rebar as the attractor for the rust.
The tool becomes black because of chemical reaction.I spray KABOOM Shower,Tub and Tile cleaner on the tool,after removing it from the tub and let it sit for a few minutes,then rinse.
The black oxidation comes off instanty.I protect if from further rust by adding 1 tablespoons of paint thinner on to a rag in the minwax paste wax can and rotate rag until I have a wax slurry,and apply ,then wipe.