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Yes. My uncle had pulled some codes off of it a few months ago but he thought they indicated an issue just with tightening the gas cap. I cannot find the codes but the gas cap was not the issue....the light came right back on.
As I paid more attention the rough idle has seemed less pronounced following the added oil last night and it occurs in all gears including park and neutral - just maybe a little less pronounced in park or neutral. It idles at about 700 rpm's and occasionally drops down for 1/2 second or so to about 550 rpm's. The frequency seems to be random anywhere from 2 second gaps to 9 seconds between drops. I did recheck the oil this morning and it is full still so it had been light about a quart.
The morning hesitance in acceleration has been the longest running symptom and it seemed to occur more often when it had rained or there was a lot of dew.