new to Forum. But have owned several BMW's.

currently have a 2012 X6, have owned it since it was new. Just approaching 100K miles. Body in great shape, runs well.

My concern is oil usage. It used about 1 qt of oil every 3,000-4,000 miles for most of its life. The past few years , the oil usage has climbed and now uses a qt about 700-1,000 mi.

car has always had synthetic oil, changes every 5,000-7,000 mi.

what can be done to lesson oil usage (oil burn?)

Thanks for any suggestions