Quote Originally Posted by blazarcher View Post
Thorough or not, you can't ignore the horrid state of that Koolance block.
That's just o-ring grease (but it looks like our assembly staff got a little crazy with it). There's a number of sealing areas on the GTX 480 block, and some of it gets squished inward upon assembly. It's only visible if the block is opened. It can also be wiped off if it's a large concern, but I would suggest leaving enough for the o-ring areas outside the liquid path.

Tim