My father in law is a parts runner at a large Chevrolet dealership. In accordance with the "cash for clunkers" rules, they are seizing the engines by draining the fluids and filling with Liquid Glass, or some other liquid sodium silicate. He said most only make it a couple of minutes, but the record right now is a '99 Lexus RX300 V6 that went 28 minutes at idle until dying. Not bad all things considered.