Quote Originally Posted by wez3570 View Post
Try cola, honest it really surprised me! I'm not sure why but the GFX-2 on top of my GTX280 looked inside like someone had been using it as a cigarette filter! Really clogged with some black tar looking stuff! I first tried ketchup, didn't touch it, then vinegar, same. Coca-cola FTW lol
That black tar stuff sounds like algae.