Originally Posted by
Looigi
I have a friend with a big transmission shop. He has a large industrial washer that uses very hot water and detergent to degrease and clean transmission components. He can fit several entire disassembled automatic transmissions, housing and all, in it at once. The parts came out quite hot and quickly dry on the bench.
I can buy that one. But I'll bet not every part of the transmission goes through that bath.
Bicycle parts can be a little different. For example Shimano has shifted from anodizing to clear coating or painting a lot of components. The finish may not stand up to that kind of treatment.