You can run an engine through a dishwasher, but you shouldn't use it for dishes again (unless they're Art Dishes and won't be used for food). It's like how you have pots for cooking and pots for dyework, and you keep them in different parts of your house.

We could find out through the magic of buying two of them.

However they will, I'm quite sure, ruin a washing machine.

How do you think the engine on the table got so clean?