Warning! Do this at your own peril.

Cleaning small engine parts and gear box parts Get an old dishwasher and place it in the corner of the yard away from flammable materials, disconnect the pump out pump, and block up the hoses . Load the machine and poor in diesel and water and set the machine going. Use the low heat setting until you get game to use the high heat setting. I used old petrol thinners and any thing I could use that was cheap. I used this for many years with out any dramas. In the end it was high heat with steam emitting from the machine. The parts came out clean as a whistle but you have to spray machine surfaces with rust retardant as the parts would rust within hours,