Pennzoil claims their oil is good for 500,000 or 15 years whichever comes first. How can this possibly be? And it's less than $24 dollars. I'd think it would cut down on oil sales.
https://www.walmart.com/ip/Pennzoil-Platinum-Full-Synthetic-0W-20-Motor-Oil-5-Quart/123640799?athbdg=L1103&from=/search