I was careful to say "ain't normally"!! I've seen it happen. Where & where were you when this took place & why were they so cheap on the vehicle oil they purchased? LOL on the leaking vehicles used for the test program with expensive synthetic oil.
Sold my 68 GTO to an in laws brother for a $1000 somewhere round 1980. I built the engine. Six months later he calls me & says it won't run. I go over & take off one of the value covers. Oil was gummed up like Play Doh. I asked what happened. Said he couldn't afford to change the oil. Told him, you are buying (2) $15 lids of weed a week but you couldn't afford to change the oil. I didn't help him do nothing with the car after that
