Ultrasonic cleaner solution recommendations

Anyone have any recommendations for a solution to use in an ultrasonic cleaner for parts. Most are aluminum, with some brass and stainless. Generally cleaning carbs, other parts from small engines and anything off the boat or car that will fit. I have been using Simple Green, it works okay, so wondered if anyone has found something they REALLY like. Thanks!

Ultrasonic cleaning solutions at McMaster - lots to pick from!

Ok, so being the impatient sole that I am, I was at Home Depot and saw that they carry Simple Green Professional HD - It was only $14 and some change (with tax), so I picked up a gallon.

What an improvement over the normal simple green. After only about 4 minutes in the ultra sonic cleaner, the carb went from black/brown to almost shiny aluminum. Later, I put the cylinder head in, after 10 minutes (granted the solution was pretty dirty by now), it looked better then the regular Simple Green (after an hour), not a 100% but a lot better. Don't know if I will try the expensive McMaster stuff at this point. Would recommend this stuff though, especially for carbs.

I'll post some before and after pics.

Nice!

Do you think we could fit my entire engine in that parts cleaner?   

When we bring our carbs into the lab for ultrasonics,

Found that Lestoil and water is the shizzy.

I cuncur, Standard simple green is really an aweful degreaser. Havn't used it yet, but suspect the HD could be more like Oil Eater, Castrol Super Clean or Zep Industrial Purple? Some of these will etch aluminum.