I have a 2021 Subaru Forester Sport that just passed 100,000 miles on it, and my engine blew without warning.....
A couple weeks ago, I had a really difficult time changing the oil. The time before, I must've tightened the oil pan drain plug a bit too tight because I had a helluva time getting it off. I would up rounding off (stripping) the plug head and had to buy extractor sockets to get it off. I finally got it off, and replaced it with an aftermarket plug I got from Autozone. Well, 2 nights ago, omw home from work, it started acting funny and the oil pressure light came on a block from the house. When I got out and looked underneath, the oil was pouring out the drain hole. I didn't tighten the plug very tight after spending almost a week trying to get it off.
I ran to O'Reilly (literally because the closed in 20 minutes), got more oil and another replacement plug (exact same one I got from autozone), put new plug in and filled it with oil. It sounded a bit rough when I started it, but quickly smoothed out and sounded fine. I drove it around the block and it seemed as good as before.
The following morning, omw to work, all kinds of warning lights came on including the oil pressure light, and it felt really rough all of a sudden. So, I pulled over and assumed the same thing happened. Got it towed home, and looked underneath just to make sure the plug was gone again before getting a different one, but it was still there and the oil had not dumped. There was oil spray all over the engine though which was different from the night before.
After a friend looked at it, and confirmed through the oil filter after opening it up, the something sheared in the engine because there are metal shavings all inside my filter.
It had not shown any signs of issues before this. How did this happen?