Well, I’d like to imagine that if you had a brand-new car that was using that much oil they’d make things right, but in general that is the point at which the car makers will allow a warranty repair for oil consumption alone.
I tried this a few weeks ago. We cooked a piece of chicken that smelled bad (but not expired, so we thought it might be ok), and it still smelled bad after cooking. Didn’t eat it.
About the leaking, it’s not the same as changing the oil, because the oil leaking out is not completely “dirty”, it’s been diluted by the oil coming in. This way, you’ll never get rid of all contaminants.
Germs and bacteria create toxic shit that’s resistant to heat. Heating may kill the germs themselves, but their kryptonite will remain left behind in most cases. And that shit is what’s really bad for you.