Originally Posted by
Schlafen
Drivetrains need to be cleaned not degreased.
Ultrasonic cleaner + petrol or kerosene for chainset if cleaning industrial quantities, or for a bike shop.
I would be afraid of using petrol (gasoline) -- do you really do that? Kerosene has a lower flash point, I think but is smelly. I used to use that many years ago but switched to paint thinner (mineral spirits). Probably even that caused me brain damage back in the day. None that I can see now, though.