Wouldnt blowing it up create a bit of an environmental hazard?.
If so, everyone involved might be getting a visit from the gooberment.
Surprizingly some would run on for hours.
Then we cut em up and took em to scrap yard. I had a rusted out Geo Metro 3 cylinder that ran for two hours at 5,000 rpm with no oil. BOOM! She died in a dramatic kinetic flying apart. Most would just start to slow in RPM and seize while catching fire (which we would put out). We had one of those Plymouth grand caravan V6 engines that ran out of gas after 3 hours. As it cooled it seized up. That was voted strongest engine ever.