In a 7000-7500 OCI in a 5qt sump. I use, not quite, 5qt initial fill then end up adding a little here, a little there. It seems to get thirstier in the latter half of the oil change interval. I probably Add a full quart or two....but keep n mnd you can burn through a quart and never be below add, so you BURNED a quart but didn't ADD a drop!
My Cobalt seemed to have been run almost entirely on Firestone changes for 125,000 from day 1(2006) until 2014. I even partook a time or two snce I was worrysome about trying something new (cartridge filters). I think they would run the Kendall hi-mile oil.
It just got plugs and a fuel filter around 125-150k and a stumbling when approaching stops. It wont quit but will act like it wants to........2.2 4spd auto