Hold yer data points there, Hoss. Two inches above full counts as blatant abuse to me, that'd be a problem on most any engine. One quart shouldn't cause any problem, this could be three or four quarts, maybe more, depending on the shape of the insides of the oil pan(s) and block. This picture gives you an idea. The machine has not been built that can withstand stupidity, not even a Toyota.
I'm wresting with what to do next. I'd like to pull the intake and look for pooled oil, I've seen intakes full of oil before. I'll at least pull some hoses and take a look, the 80 had a problem with plugging EGR hoses. If there's plugging in the hoses, I should take it to a different dealership (further and less convenient) to have things cleaned out and documented in case there's trouble later. I don't even know if there's a PCV valve, but if there is it's been passing a lot of oil the last 4000 miles. The bigger dealership's mechanics might try to protect my local dealership's mechanics, or they may relish the opportunity to make a competitor look bad.
So I guess I should not worry about mine being 1/4 inch above the full line. runs smooth as silk and no smoke and the oil pressue guage show 1/2?????