Just drained about 20oz of oil from it. After talking with Angel a couple weeks ago about an odd phenomenon where doing an oil change and only 6 quarts showed as full on the dipstick... And I've had an odd idling issue since my last change, plus that phantom stall out in traffic 2 weekends ago, I decided to make use of the quick valve I installed, and drain a little oil at a time while checking the readings.
Apparently I have the same issue, and blindly dumping in 7 quarts cuz the manual says so, was too much, as my dipstick still reads full. I probably could have drained a little more, but didn't want to lug out my jack to raise the front end enough to stand the oil bottle upright. I'll see how the truck drives (and idles) over the next couple of days, continue to monitor the level.