OVERKILL
$100 Site Donor 2021
That's called a "one armed bandit" and it's about as relevant to engine protection as how well the block stops a .50BMG round.That video is pretty straight forward to the point. There is plenty of other videos demonstrating it from independent testers, plenty of reviews of people having oil loss and Prolong saving their engine, which is interesting because it happened in my family as well, oil filter got damaged on the highway and it drove miles without oil, Prolong was in that engine, no damage this was of course over a decade ago so possibly formula differences now.