I bought an ultrasonic cleaner recently. I haven't used it. I have been too busy getting all the trucks ready for auction. But I did get about a dozen of the old things running last week. Some of them I just replaced the carb. I am hoping to try the thing soon. Most of the old engines had ethanol free with Sta-Bil, but after 5 years the gas still turned to tar. There is a guy that is well respected in the Y-Block world.
https://www.hotrodreverend.com/ He has some You Tube videos that show using the cleaner. And I think it probably has some instructions with it, but they may be written in Chinese.
