I recently performed the 30k maintenance on my 2002 OB 2.5l. Part of this service was the drain and refill of the radiator and coolant recovery bottle. The coolant drained from the radiator was nice and clean, but I noticed when I drained the recovery bottle that there was some orange sludge and a few chunks that settled at the bottom of the bottle. I removed it and cleaned it out real well, but I'm curious if anyone else noticed this. My main concern is that this is "normal" behaviour and not something I need to alert my dealer of.
Thanks!
-Kurt