The other day there was a post from iamMacPerson discussing converting a liquid cooled G5 to air cooled. I now own this machine and within the first few hours it's already been torn down! UPS broke the leg of his new G5 and also the top back leg of my new 2.7GHz G5. So I ran it for a few minutes and I was impressed by the speed with my SSD. Handles 720p YouTube videos in WebKit like its a hot knife slicing through butter! For this short period of time and after the YouTube testing, CPU A was at 180*F! So after that I shut down and started the tear down. Just a word of advice. Please don't tear down your LCS inside your house, not good to be working with coolant and if you have pets, the smell is similar to that of antifreeze which is sweet and animals will drink it and die. Following Bill's guide and reading it a few times the past few days, I knew somewhat what I was doing and a few hours later this thing was down to its radiator. I didn't get pictures of the corrosion (but will add some soon) and it wasn't nearly too bad however the line connecting the CPUs together was full of corrosion and crap, and the line was toast so all of that went into the garbage. On the waterblock, one of the 8 screws was a total PITA to get out but eventually I got it out. To clean these little blocks and the plastic bits the line connects to, I rinsed them under warm water and scrubbed them down with a old toothbrush to remove the gunk. All clean now! The stock fluid in here is a piss-like yellow orange which has almost it's own ecosystem of clouds near the bottom of whatever you put it in, and there was all kinds of crap in the fluid that I have zero clue how it got there. For new coolant I went with Feser One in the green color, which looks pretty neat. You can see this in the attached photo with the green, as I was cleaning the pump I added some coolant to it. Almost went with some real engine coolant to make the LCS even more genuine! Waiting on O-rings to finish this up. Will make this post nicer with pictures soon MR on my iPad is being lame with attachments.