It appears that the guy who sold me the car is sticking to his guns. He sold it to me as-is, I bought it as-is, I get to keep it, as-is

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So, I had $2500 (usd) worth of work done on it. Got the oil leaks fixed and basic engine maintenance stuff, and presto, the check engine light is off and hasn't re-appeared. I've put a good 500 miles and a week since the repairs were done. I also bought an extended warranty for it just in case any of these problems come back in a year. All in all I'm happy. The car cost me $5000 more than it should of, but I guess I just have to tally this in the lessons learned
