Hoping it's not just a fluke, but wife's troublesome 2013 Equinox that was consuming about 1quart/2000 miles seems to have gone way down. Was running Valvoline Full Synthetic (formerly Synpower), but couldn't really justify the price for its appetite. On a whim I used plain old Pennzoil 5W-30 at the last change, and I'm amazed that consumption has gone way down. It's also getting quite dark. Maybe it was a sticky ring and it's cleaning things up? Thinking I'll change it again at 3000 since the OLM usually goes 6000.