Here's an interesting one. Little over half full.
1800 miles of hard towing. High winds and mountains. The oil got a little warm this trip.
1000 miles of driving around Houston.
Switching to 5w30 a couple years ago has time and time again shown that it's much better for the motor. This time it's allowing less oil to be vaporized into the intake.
Before hand, if I remember correctly, when towing I would've had to dump it by the time I got to my destination. I've been monitoring it this whole time and finally felt it was due for a dump.