drive repair tips?

I have a disk drive - a (relatively) modern sealed unit - which appears to have mechanical trouble. The noise it makes spinning up says to my ear "bearing friction". I'm considering taking it apart and lubing the bearing. Of course, this would at best be a temporary fix, since it is on its way out at this point; this is more to gain experience on a throwaway device than to actually recover the drive. (All the bits from it are safe; live mirroring is great for that.) Any tips from the collective wisdom? Obviously, I want to do this in as close to a cleanroom as I can reasonably find, and have the platter assembly open as short a time as I can. But I don't, for example, have any idea what would be a suitable lubricant to use - assuming the bearing isn't a totally sealed assembly itself.... ObOTness thread: the disk itself may be formally on-topic; it's certainly close to - it is stamped "MAR 31 1996".