I think you have an excellent point. I'm going to tell a little story that, at first, will read totally off topic but hang with me.
A while back, I replaced my original transmission with a salvage one. The first test drive seemed fine but it was only for a couple minutes. The next day on my way to work it leaked and sprayed oil all over the underside of the car. Looked like a disaster but ended up being only about a cup.
I had bought a rear seal ahead of time for the used trans but, after noting the good condition of the one it already had, I opted to skip it. As I gently drove my car home in the right lane, I thought to myself "Big mistake, you moron." Hard to believe though, because I've done this kind of work my whole damn life.
It turned out to be a tiny fleck of sawdust I had originally missed when I first inspected the oil seal. I flicked it out with the end of a zip tie and put everything back together. It has been perfect ever since.
Moral of the story is that I learned how little it takes to destroy the integrity of a shaft seal. Maybe it was the same for the turbo. @
drz400dude, maybe you were unlucky enough to get the one in 500 with some shit stuck in a seal but this time it worked itself loose.
And I feel a little bad because of my joke but you gotta admit that was a pretty good troll.
*high five* *bro hug*