IIRC - behr #63 deck and patio wash -
is O.A. you used to be able to buy OA crystals and make your own, but I dunno anymore.
+1 on doing BMX bike frames and other metal items. works like a champ. will not hurt stickers/decals, rubber parts, bearings, etc. I throw the whole assembeled bike into the bathtub and put the solution in the tub and let that soak a day or two.
warning - be ready to treat the item as soon as you remove it from the bath, or it will start rusting immediately.
on the last bike frame I did (79 roger de coster!) it was a nickel frame so I just wiped it down with oil or wd40 or whatever and good to go.
somewhere in this forum is a discussion on OA bath. and at bmxmuseum . com too.
. .. something something, be careful, wear eye protection, have a vent fan,, blah blah, something...
try not to die -
- saylor