Very interesting guys, I'm impressed with the application of various fluids for this purpose.

I have a small ultrasonic leaner and generally use a household detergent in it but will try some of your ideas.

I have been warned by one or two people not to put springs in it as there are anecdotal reports of them unexpectedly breaking afterwards. Not sure if there is causality or observed co-incidence with regard to this. Anyone else have any ideas?

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