The antifreeze in the crockpot works great but something needs to be added. NEVER EVER USE THE CROCKPOT FOR FOOD AGAIN. The porcelain will absorb the antifreeze and leach back into the food and poison you. I keep an old crockpot of antifreeze in my shop and clean my engines regularly. But now it is a tool for cleaning engines, not cooking food.

By the way, I always disassemble my engines to get the insides clean as well. They always seem to run like new, as well as look like new, after a good cleanup.