I'm mainly a motorcycle restore guy so Yamalube stuff is what I'm comfortable with. You mix it 1:1 with water in a crock pot. Dunk your parts and boil for a while and they come out astonishingly clean. When you get done, put the lid on the crock pot and slide it back under the workbench for next time you need it. I do a lot of motorcycle carbs in my shop and get about a year out of a bottle before replacing. If you keep it covered to cut down on evaporation, you can use it for a long time.
http://www.yamaha-motor.com/outdoor/...22/detail.aspx
You'll never use that Berryman's gallon dip stuff from the auto parts store again after you use Yamalube.