I recently experienced a similar issue with Rotella Gas Truck 5W20 on a older Honda V6 engine. Previous fill of conventional oil after 7000 miles was 2 qt low. A fresh fill of Rotella Gas Truck 5W20 was over 2 qt low after 3k.If not B then A.
Seriously though that is way beyond any "brand change" consumption anyone has ever posted here. I change brands all the time in both my new Tiguan (twice now) and my ancient old cars and I never see anything like this. In fact I'm not sure I've ever seen increased consumption due to a brand change, but maybe that's just me. Other people have, but not going from zero to 1 quart per 1000 miles.