Came home to my bmaverick DDC pump making a horrid squeal. Pulled it apart and the impeller looks okay. I'm thinking it's the bearing on the bottom. Tried to pull it apart, but couldn't get the electronics out. I think all I can do is try some 3-in-1 and hope it gets better. I really don't want to drop the money on a D5 (+res/top) or something seeing as how I just got an acrylic res/top for the DDC. (Also, bmav's DDCs were the right price. Real pumps are expensive.)
It's times like this when I hate water cooling. It's a stupid, stupid idea.