I had enough time today to do two oil changes, one on the BMW, switching it from Mobil 1 0w40 over to Castrol 0w40. I was a bit annoyed at how impossible it was to read how much oil was left in the 5L jug though, despite having the see through window on the side. I honestly couldn't see where the level of the oil was.
The second oil change was on my Honda, putting in more M1 0w20 AFE but I kept the same Fram Ultra on there, as it only has 6200 miles on it so it could easily go another interval.