For those that may want to try some, it is part # 777189 now and cost me $54.99 + tax from an EVINRUDE dealer this morning. I know this stuff puts seafoam to shame for decarboning, but it does require extra soak time and I don't reccomend directly mixing it with your fuel.

Thanks for the numbers Ferm. Going to get some and then try it in the ultrasonic. I know that my unit isn't as good as Spares, but I'm hoping that the vibes and heat will help with the cleaning along with what the chemicals will be doing. I have an old BSA 441 Victor carb that I'm going to try it out on as a test. Someone on iBoats made a post that Liquid Wrench makes a carb cleaner that's safe for plastic. Gonna do a websearch and see if I can find it. I'll keep everyone informed on the progress of finding it. :head: