I woke up this moring to roll to my insurance company to put full coverage everything on my 97 cadillac concours, and hopped in my ride. Started it. And in my guage it said "check oil level". I checked it and it was really low! I had it changed like 2 weeks go with 7 quarts of synthetic. And now im out of oil??? I dont have a leak. I checked everywhere i drove today and in my driveway etc. So I put 7 quarts back in it. And now I will have to see what happens. But do they burn oil fast?