Ok. I have had the car for a little while and I think I got it all cleared up. How you ask?
I changed the oil and filter. I used a bosch filter and 15W40 Oil. Soon after that I noticed that the spark plug fouling and bluish exhaust cleared up.
But it still idled rough and thought it would die at intersection with ac and drive on. I ran Seafoam through the gas tank with premium (of course) I can of seafoam and 2 tanks of premium, it runs like a top.
I was so afraid the engine was junk. I am relieved. Oh and I replaced the air filter, it was still good though.
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