I went to have my valves adjusted today. Having purchased the car around 2 years ago I'd looked through all of the old receipts and could not find where they had been adjusted.

My mechanic said that they were all super-tight but some were nailed down to the point that he couldn't even get a feeler gauge in there. Together we decided to back them off incrementally. He was concerned that if he backed off all the way to factory specs I would have problems.
I knew I had an oil leak, he said that it's probably from the front seals, and there's also oil in the air cleaner.
To boot, he said that usually it should be quite an effort to turn the engine over using the crank pulley but with my car it was pretty easy which may indicate some poor compression.

He said that my engine may not be as strong as I originally thought but that there was no reason for me to panic, it could run for a long, long time yet.
It still starts and runs fine and although I'm going through a little oil, it's not that bad yet.

He just suggested being careful with the money I stick into the car.

If it was a garage queen- rust-free and minty, I'd consider keeping it long-term and either taking care of the engine or installing a new one, but that's not the case, so I'm going to run it as long as I can.