You can see the scoring on the cylinder wall, this happened because a combination of things, bad oil system design, oversized piston rings that wear, and oil pan design flaws. When in a corner the oil pan does not have baffles to keep oil around the pick up tube, the piston rings wear down causing blow by and oil burn which all leads to hotter oil temperatures and a setup for failure for someone that has fun with their car, if you drive like an old lady you will likely never have any issues! Well since I like to have fun I ended up spinning a rod bearing, I also had the spark plug threads in the cylinder head strip out on this cylinder and blew the spark plug out. I drove the car for 3 years with the spun bearing and only had an annoying engine tick! Finally I got a newer engine, half the miles and it was a 2004 1zz-FE so the piston rings were properly sized, and I installed some baffles in the oil pan so this won't be happening again, in the meantime I have an extra engine and cylinder head to work with!