Perhaps the drum bearing was failing prematurely, and the gray discoloration was from the black moly bearing grease leaking out?
re: I count FL machines made in the USA:
Speed Queen (good machine, cycles too short, no heater avail on front control model)
Frigidaire Affinity (nice machine, but owned by Electrolux)
Bosch Nexxt (made in USA, company is German)
Maytag Neptune (original Neptune 6500, may be disconinued by now, though)
Personally, though, if I were looking for a replacement for my Neptune pair, I'd be considering the GE FL Adora, or the Affinity. Both are non-tilted drums, and available with heaters. The best buy at this point seems to be the GE, although the Affinity is close in price/capacity/performance. What I don't like are the dumbed down limited cycle choices, I guess I've been spoiled by the Neptune 7500's LCD menu-driven interface.
But then, I'm not looking to replace the Neptune anyway. It's working just fine (knock on STPP).