I thought it might be something like fluctuations or something. I should be able to check it Sunday.
Had a problem Tuesday when I drove it to work. After driving for a bit, then sitting for a bit, it didn't want to restart. Just cranked weakly until battery dead. Had the battery tested today and it's good. So I'm thinking it's the starter.
I have receipts for just about everything having been replaced BUT the starter, so it might be getting too old.
Anyway, gonna put in new starter, change engine oil, filter, and replace the fluid in the transmission.