Did 4 oil changes today.
Total cost was ~$7. Used about 25 qts of oil.
Used Mobil1 High Miles Full Synthetic x2, Chevron Supreme blend, and Valvoline high miles blend. Left the filters on 3 since they're all M1 filters for 1 year or 20k miles and they've been on for about 10 months and less than 600 miles each. I replaced filter on 1 since it needed it, and I'm glad I did. It was on there really good and was hard to get off. I had to use a adjustable wrench and pinch it a bit to get ahold of it. Total cost was about $7, including the single filter I bought in bulk at $4 each last year.
Oils out were Costco full synthetic x3 and Quaker State FS HM x 1. These oils performed very well and were consistently uniform in appearance on draining. I can recommend them all. I would use them again, I have significant other oils from Hurricane Walmart event, and I wanted to used up some leaking jugs of recently acquired oils so that's why I picked what I did.
Not counting the time I allow for draining, I'm about 30 minutes per OC.
Going thru records, 5-10 years ago I used to pay about $70 for a FS oil change at a quick shop, when I was ultra busy and had no time for my own OCIs. Now, I'm guessing they're around $100 each. So today I saved nearly $400 doing it myself.
Thank you Hurricane Walmart 10 cent per qt oil.