I used a soda blaster to clean the paint/grease from my motor, but I still got media I needed to clean out. So, then I ran my case thru the dishwasher on "heavy wash" a couple times. Works well, then take an air hose to all the oil/bolt passages, to get any excess water out. Hondaman mention's using a dishwasher in his book, but I have washed everything from engine parts, to degreasing bolts, for years. I don't like car washes for cleaning parts, unless I have to. Hate the wet/greasy blowback in the face that always seems to happen.