Has anyone used this particular product for oxalic acid baths?
I've used it for my first OA bath I'm giving for some bits and pieces on an old maruishi road bike I'm restoring for my dad. At first I prepared a mixture of a gallon of water with about 2 tablespoons of the white crystalline powder but even after a 24 hour soak I have not noticed any removal of rust material. Since then I've placed at least 2-3 additional tablespoons of Savogran but still fail to see any of the dramatic results I've seen with other users on this forum. I do notice small buildup of white/yellow/greenish plaque on some of the rust spots though...
I'm starting to wonder if Savogran contains a lot of inert additives inside and only a small portion of oxalic acid as the active ingredient.
Actually, after comparison with the photos from before I have noticed a reduction in surface rust, at least for what I presume to be the chrome plated pieces of the headset. The rust on the seat rail clamp largely remains. I'm guessing those parts are zinc coated. auchencrow, you're right!
I'm a bit concerned about how long it's taken though. I need to make more headway soon enough or else I won't finish in time >.<