Ran the chain and freewheel from the new Fuji through it last night. 4:1 water to Simple Green, 3 x 480 seconds cycles:



Chain is now the gun blue/gold color it should be, most of the gold on the freewheel is gone from wear. Both parts were the typical greasygrimygunk color. The chain was all one color. I did no scrubbing at all. Ultrasonic cycle, rinse x 3. That's it.

Interestingly there were tiny metal filings in the bottom of the tank when I emptied the spent fluid. I'm presuming it all came out from the chain.