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> Ultrasonic cleaning
krazykonrad
post Feb 3 2026, 12:49 PM
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I'm about to run my rocker arms/shafts/etc. through the ultrasonic cleaner. Will Simple Green work? I've had Simple Green eat up the protective finish on bike chains. Any issues with engine parts?

Thanks,
Konrad
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GregAmy
post Feb 3 2026, 01:09 PM
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I used Simple Green Pro HD when I rebuilt the Dellortos. Worked great.

https://www.homedepot.com/p/Simple-Green-Pr...13421/100550784
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Chad911sc
post Feb 3 2026, 01:59 PM
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Purple stuff and water works great too.
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Jack Standz
post Feb 3 2026, 03:32 PM
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Question: in your experience, what shouldn't you use the ultrasonic cleaner on?

For example, going to clean up some 914 door handles, but don't want to make them look ugly or the chromed parts ruined. Have used some rust treatments in the past that left the steel blackened.
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914sgofast2
post Feb 3 2026, 05:03 PM
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You can also use plain old Dawn dishwashing liquid soap from the kitchen in the ultrasonic cleaner. Works well to remove oil and grease without discoloring the metal parts. Simple Green has a tendency to blacken aluminum parts and pot metal parts in my experience. Dawn stop is also cheaper than any of the other cleaners mentioned, but may take a bit longer to effectively clean off all the oil crusted and baked on the parts.
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