1991 LS
170600 miles.
Just finally replaced the O2 sensor after 2 months of trying. (yes, it rusted in, and yes, 2 months of destroying it with vice grips finally paid off today)
All leaks have been patched/resolved fairly quickly.
A/C comp. going out, the load from it broke off all my power steering pump mount bolts into the cylinder head. Power Steering disabled and belt re-routed for now. I blame my buddy for not listening when I said "I'm runnin into the store, don't touch the Air Conditioning!"... he set it to max.