Originally Posted by
g-funk
I really think that most inexperienced OA users use to much. I shake a small amount of the crystals 2-3 tablespoons into a 5 gallon bucket of water. I handle the parts with my bare hands and wash my hands with dish soap and then baking soda, same with the parts I use a white scotchbrite pad. this mixture cleans rust off parts after 1-2 days of soaking.
It sounds like you're using a milder mixture than me and the results are the same, I'll try diluting my batch a bit. I'm sure that the temperature also plays a role in how fast it works, I don't need to worry about making a caustic popsicle.