I completely cleaned the drivetrain. I lightly lubed the chain and wiped off excess. Went on one ride. My drivetrain is black again.
Is there any way of preventing this? It doesn't seem to matter what I do to clean or lube, what chain lube I use, or the road conditions I ride on after a fresh cleaning. Is there dirt hiding somewhere that I'm just not cleaning out?
If it's something I just have to live with, I'll do it, but if I can prevent this, I'd like to try.