[LSX5]

A few weeks back I got a warning light to add more oil so first I check my dip stick and yes the oil was on the low end. I add about half quart of bmw diesel oil and that brought it up to 3/4 full.
My SAV has 111k on it. Is it common for diesel's to burn oil? I never has to add oil before. I had the SAV since 30k going on 5 years.
I do not have any oil on my driveway so I am assuming it is getting used up. I haven't got a chance to check under it just yet for leaks but no
spots on driveway.