By now you’ve certainly noticed the smell. That is the aroma of Mobil 1 oil being boiled off

That sounds so familiar!

My first car was a barn-find 22 year old (at the time) 1964 Triumph TR4. It had a moderately bad oil leak, and the oil would land on the exhaust manifold and be blown along the transmission tunnel. Smoke would fill the interior around the shift lever. It would smoke more heavily the harder you pushed it.