Small follow-up to the thread and my last post: I recently went through a bit of this "purge the old fluid from the system" undertaking. I wasn't sure what was in there to start off with, seemed to remember doing DOT5 (to avoid the potential paint damage), but upon testing the stuff would in fact mix and not stay separated...so I concluded DOT x.

Anyways...from there I wanted to go to the best I could find at the local parts store. Ended up picking up Bosch ESI632N, which is a 5.1 fluid and claims to be compatible with all the other ones (with the exception of pure DOT5).

Take a look at the attached spec sheet...I used that, so far no problems, brakes are awesome!!!