Thanks all. I did check my oil level (embarrassed to say this is the first time I opened the hood since I have had it), and it is fine.

I am going to switch to using Shell. I have located a station that is not much further away than the cheapo Crown station. I used to be hesitant to use Shell cause in the 80s I had a Maxima that ran better when it did not use Shell. I will give it a try again. I still don't buy Exxon because I am still mad at them for what they did in Alaska.

Since I work at home, I fill up only once a month anyways.

I will report whether this continues to occur.